Echocardiography, Class II, Introduction to Echocardiography - Anatomy of the heart, cardiac hemodynamic concepts, coronary arteries, coronary artery branches, coronary distribution, 17 segment model, coronary perfusion, the pathway of the heart, cardiovascular blood flow, the cardiac cycle, semilunar valve function, cardiac intrinsic function, electrophysiology of the heart, electrocardiogram, phases of the cardiac cycle (chart), cardiac output, stroke volume, preload & afterload of the heart, calculation of target heart rate
The document discusses the history, anatomy, angiographic views, variations, and clinical relevance of coronary arteries. It provides a detailed overview of the typical anatomy and branches of the left main, left anterior descending, left circumflex, and right coronary arteries. It also describes common anatomical variations and anomalies seen in coronary arteries and their clinical implications. Angiographic classification methods for different coronary artery segments are presented.
Contrast echocardiography uses microbubble ultrasound contrast agents to improve image quality. These microbubbles remain in the intravascular space and allow for assessment of cardiac structure, function, and perfusion. Second generation contrast agents use an inert gas encapsulated by albumin or phospholipid shells. They interact with ultrasound by reflecting at fundamental frequencies and resonating to produce harmonic frequencies. Continuous infusion provides steady contrast levels needed for perfusion assessment. Contrast echocardiography is a non-invasive technique that improves evaluation of the heart.
Echo assessment of lv systolic function and swmaFuad Farooq
This document discusses various techniques for assessing left ventricular systolic function using echocardiography, including:
- Visual assessment of endocardial motion and wall thickening to evaluate global and regional function
- Quantitative measures like fractional shortening, ejection fraction, and volumes
- Tissue Doppler imaging of mitral annular velocities
- Tissue tracking and strain imaging to evaluate timing and extent of myocardial contraction
- Wall motion scoring to characterize regional abnormalities
This document discusses M-mode echocardiography, including its physics, applications, and findings. M-mode provides high temporal resolution to evaluate cardiac structure movement and timing. It can be used to assess valves, walls, intervals, and morphology. Examples are given of M-mode findings in various cardiac pathologies at the mitral, aortic, pulmonary, and tricuspid valves as well as the left ventricle. Measurements like fractional shortening and ejection fraction are also reviewed.
This document provides information about cardiac catheters and guidewires used in cardiac catheterization procedures. It discusses the history of cardiac catheters, ideal characteristics, parts of a catheter, materials used in construction, types of catheters including pigtail catheters, and features of guidewires. Characteristics such as size, stiffness, memory, and friction coefficient are compared for different catheter materials. The document also includes images and descriptions of specific catheters and guidewire tips.
This document provides an overview of cardiac catheterization procedures. It discusses indications, contraindications, techniques, views obtained, and interpretation of pressure waveforms. Key points include that cardiac catheterization guides treatment decisions by measuring pressures, outputs, and obtaining images. It is now often used therapeutically for procedures like angioplasty and device closures. The document outlines patient preparation, access methods, catheters used, views obtained, and complications that can occur.
The document summarizes key aspects of cardiac catheterization and hemodynamic data collection. It describes the normal cardiac cycle, pressure measurement systems, normal pressure waveforms, methods to measure cardiac output like thermodilution and Fick, how to evaluate valvular stenosis and regurgitation, determine vascular resistance and shunts. Specific details are provided on assessing aortic stenosis, mitral stenosis, right-sided valves and quantifying regurgitant fractions. Oxygen saturation analysis and Fick principles are outlined for shunt determinations.
This document provides information about right heart catheters and angiographic catheters. It discusses the history of right heart catheters from 1929 to 1970. It then describes the diagnostic and therapeutic indications for right heart catheterization. The document outlines the parts of a catheter including the hub, body, and tip. It summarizes several general purpose catheters used for right heart catheterization including the Cournand, Goodale-Lubin, multipurpose, and Swan-Ganz balloon flotation catheters. Finally, it discusses several angiographic catheters used including the pigtail, NIH, Berman, Gensini, and Lehman catheters.
The document discusses the history, anatomy, angiographic views, variations, and clinical relevance of coronary arteries. It provides a detailed overview of the typical anatomy and branches of the left main, left anterior descending, left circumflex, and right coronary arteries. It also describes common anatomical variations and anomalies seen in coronary arteries and their clinical implications. Angiographic classification methods for different coronary artery segments are presented.
Contrast echocardiography uses microbubble ultrasound contrast agents to improve image quality. These microbubbles remain in the intravascular space and allow for assessment of cardiac structure, function, and perfusion. Second generation contrast agents use an inert gas encapsulated by albumin or phospholipid shells. They interact with ultrasound by reflecting at fundamental frequencies and resonating to produce harmonic frequencies. Continuous infusion provides steady contrast levels needed for perfusion assessment. Contrast echocardiography is a non-invasive technique that improves evaluation of the heart.
Echo assessment of lv systolic function and swmaFuad Farooq
This document discusses various techniques for assessing left ventricular systolic function using echocardiography, including:
- Visual assessment of endocardial motion and wall thickening to evaluate global and regional function
- Quantitative measures like fractional shortening, ejection fraction, and volumes
- Tissue Doppler imaging of mitral annular velocities
- Tissue tracking and strain imaging to evaluate timing and extent of myocardial contraction
- Wall motion scoring to characterize regional abnormalities
This document discusses M-mode echocardiography, including its physics, applications, and findings. M-mode provides high temporal resolution to evaluate cardiac structure movement and timing. It can be used to assess valves, walls, intervals, and morphology. Examples are given of M-mode findings in various cardiac pathologies at the mitral, aortic, pulmonary, and tricuspid valves as well as the left ventricle. Measurements like fractional shortening and ejection fraction are also reviewed.
This document provides information about cardiac catheters and guidewires used in cardiac catheterization procedures. It discusses the history of cardiac catheters, ideal characteristics, parts of a catheter, materials used in construction, types of catheters including pigtail catheters, and features of guidewires. Characteristics such as size, stiffness, memory, and friction coefficient are compared for different catheter materials. The document also includes images and descriptions of specific catheters and guidewire tips.
This document provides an overview of cardiac catheterization procedures. It discusses indications, contraindications, techniques, views obtained, and interpretation of pressure waveforms. Key points include that cardiac catheterization guides treatment decisions by measuring pressures, outputs, and obtaining images. It is now often used therapeutically for procedures like angioplasty and device closures. The document outlines patient preparation, access methods, catheters used, views obtained, and complications that can occur.
The document summarizes key aspects of cardiac catheterization and hemodynamic data collection. It describes the normal cardiac cycle, pressure measurement systems, normal pressure waveforms, methods to measure cardiac output like thermodilution and Fick, how to evaluate valvular stenosis and regurgitation, determine vascular resistance and shunts. Specific details are provided on assessing aortic stenosis, mitral stenosis, right-sided valves and quantifying regurgitant fractions. Oxygen saturation analysis and Fick principles are outlined for shunt determinations.
This document provides information about right heart catheters and angiographic catheters. It discusses the history of right heart catheters from 1929 to 1970. It then describes the diagnostic and therapeutic indications for right heart catheterization. The document outlines the parts of a catheter including the hub, body, and tip. It summarizes several general purpose catheters used for right heart catheterization including the Cournand, Goodale-Lubin, multipurpose, and Swan-Ganz balloon flotation catheters. Finally, it discusses several angiographic catheters used including the pigtail, NIH, Berman, Gensini, and Lehman catheters.
Coronary angiograpgy basic n special views by Author- Dr Surg Capt Rajesh Pa...Rajesh Pandey
The document discusses optimal angiographic views for visualizing coronary artery segments. It provides an overview of coronary artery anatomy, including typical vessel course and branching patterns. It then describes the optimal angiographic projections for imaging specific segments of the left main, left anterior descending, left circumflex, and right coronary arteries. These include the left anterior oblique, right anterior oblique, lateral, and anteroposterior views with varying degrees of cranial or caudal angulation. The document aims to help angiographers select views that clearly show coronary anatomy and guide interventional procedures like angioplasty.
This document provides an overview of echocardiographic assessment of mitral regurgitation. It describes the anatomy of the mitral valve including the leaflets, annulus, chordae, and papillary muscles. It discusses Carpentier's functional classification system for describing the mechanism of mitral valve dysfunction. Methods for assessing severity are covered, including color flow imaging, continuous wave Doppler, vena contracta width, proximal isovelocity surface area, and volumetric assessment. Key points are made about evaluating jet direction, duration, and velocity in context of blood pressure. The importance of assessing left ventricular and left atrial size and function is also highlighted.
This document summarizes the echocardiographic assessment of mitral stenosis (MS). It describes the anatomy of the mitral valve and causes of MS. Methods for assessing MS severity include measuring the pressure gradient, mitral valve area using planimetry and pressure half-time, and pulmonary artery pressure. Suitability for percutaneous transvenous mitral commissurotomy is evaluated. Concomitant valve lesions are also identified. Stress echocardiography may be used when symptoms are equivocal. Transesophageal echocardiography is recommended in some cases.
The document provides an overview of echocardiographic assessment of aortic valve stenosis. It describes the normal aortic valve anatomy and imaging windows used to visualize the valve. Common causes of aortic stenosis including bicuspid aortic valve and calcific stenosis are discussed. Methods for Doppler assessment of aortic stenosis including peak velocity, mean gradient, and valve area via the continuity equation are summarized. Limitations of these assessment techniques are also noted.
This document discusses the echocardiographic assessment of diastolic dysfunction. It outlines key parameters used to evaluate diastolic function including mitral inflow patterns, tissue Doppler imaging of mitral annular velocities, and pulmonary venous flow. Normal values for these parameters are provided. Guidelines for grading diastolic dysfunction according to the 2016 ASE/EACVI guidelines are presented. Special considerations for evaluating diastolic function in conditions like HCM, mitral stenosis, mitral regurgitation, and atrial fibrillation are also reviewed. Novel indices using speckle tracking echocardiography to assess diastolic function are mentioned.
This document discusses the echocardiographic evaluation of mitral valve prolapse (MVP). It describes the use of M-mode, 2D, and 3D echocardiography to diagnose MVP and assess mitral regurgitation severity. Measurement of the vena contracta and use of the proximal isovelocity surface area method are emphasized for accurate regurgitant quantification. Surgical indications and repair techniques are also summarized.
Go through the cybercrimes which are occuring recently
Hacking devices are a new method of killing people.
Technologies have been so much advanced.
How to be safe from this?
Go through my works then. :)
Be aware.. Your parents are being treated with devices while treatment.. be sure to know the cybersecurity features of it.
Portable devices (Insulin pumps etc) are also in threat.
This document discusses contrast echocardiography, including the mechanism by which microbubble contrast agents improve echocardiographic imaging. Ideal contrast agents are described as being safe, metabolically inert, long-lasting, strong sound reflectors that are small enough to pass through capillaries. Several FDA-approved second generation contrast agents are mentioned along with their shell materials and gases. Optimal echocardiographic settings for contrast imaging are outlined. Clinical applications of contrast echocardiography include assessing shunts, venous anomalies, and leaks. Examples of its use in specific cases are provided.
This document discusses percutaneous pulmonary valve interventions. It begins by providing background on the history of pulmonary valve interventions, starting with open surgical techniques and moving to percutaneous approaches developed in the 1950s. It then discusses the first successful percutaneous pulmonary valve implantation in 2000. The document provides details on the anatomy of the pulmonary valve, causes of pulmonary valve disease, techniques for percutaneous balloon pulmonary valvuloplasty, indications and contraindications for percutaneous pulmonary valve interventions, and the evolution and indications for transcatheter pulmonary valve implantation.
preop TEE assessment of atrial septal defect is very important for making decision for device closure, properly assessed adequate rims of ASD will reduce risk of device embolization to almost nil.
This document discusses various methods for quantifying intracardiac shunts in patients with congenital heart lesions. It describes invasive oximetry and indicator dilution techniques as well as noninvasive Doppler echocardiography methods. For echocardiography, it outlines techniques for quantifying left-to-right shunts using pulmonary and aortic flow measurements, as well as a simplified method using diameter ratios. It also discusses limitations and sources of error for these quantification methods.
Non infarction Q waves
Precise guide for Allied Health Science Students especially cardiac specialty students, DGNM, B.Sc Nursing & M.Sc Nursing Students regarding Non Infarction Q waves
Basics of Electrophysiologic study, part 1 (2020)salah_atta
An electrophysiologic study involves inserting electrode catheters into the heart to record electrical activity and induce arrhythmias. The document discusses:
1. The procedure involves placing catheters in the heart to record electrograms from the atria, His bundle, ventricles and coronary sinus.
2. The aims are diagnostic to evaluate arrhythmias and bradycardias, and therapeutic for ablation of arrhythmias.
3. Key measurements taken include intervals between P waves, His bundle activation and QRS complex to identify conduction abnormalities.
4. Tracings are analyzed to determine the rhythm, sequence of activation, effects of pacing, and identify arrhythmia mechanisms like accessory pathways
This document discusses the echocardiographic assessment of atrial septal defects (ASDs). It describes the main types of ASDs and notes that 80% are secundum defects. Echocardiography is used to identify and characterize ASDs, detect associated anomalies, diagnose complications, and guide treatment. Transthoracic echocardiography is the initial study, while transesophageal echocardiography provides better views of the atrial septum. Key measurements include ASD size, location, rim dimensions, and quantifying shunt severity with Qp/Qs. Echocardiography guides decisions about ASD device closure or surgery.
This document provides information about percutaneous transvenous mitral commissurotomy (PTMC), a procedure used to treat mitral stenosis. It discusses the stages and severity of mitral stenosis, indications and contraindications for PTMC, assessment of valve morphology, the PTMC procedure technique, instruments used, balloon size selection, post-procedure evaluation, complications, follow-up care, and long-term prognosis. PTMC is performed to improve the opening of a stenosed mitral valve by splitting the fused commissures using a balloon catheter, and is an important therapeutic option for treating symptomatic mitral stenosis.
This document discusses the echocardiographic evaluation of cardiomyopathies. It defines cardiomyopathy and outlines the major classification systems. The main types discussed are dilated cardiomyopathy, hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, restrictive cardiomyopathy, and unclassified cardiomyopathy. Specific features of dilated cardiomyopathy are then reviewed in detail, including morphological features, causes, Doppler findings, and involvement of the right ventricle and left atrium. Evaluation of diastolic dysfunction and ischemic cardiomyopathy are also summarized.
A lecture on the echocardiographic evaluation of hypertrophic cardiomyopathy. Starts with an overview of the topic then a systematic approach to diagnosis and then a differential diagnosis followed by take-home messages and conclusion.
Raja Lahiri provides an overview of coronary angiography. Key points include:
- Coronary angiography is the current gold standard for visualizing the coronary arteries through X-ray imaging with contrast injection.
- The history of coronary angiography began in the 1920s-1940s with early experiments in cerebral and cardiac catheterization.
- Modern techniques involve accessing arteries typically through the femoral or radial arteries to insert a catheter for contrast injection into the coronary arteries under X-ray imaging.
- Multiple angiographic views are needed to visualize different segments of the left and right coronary arteries. Coronary angiography is used to evaluate coronary artery disease, graft patency, and left ventricular function.
This document discusses coronary circulation and the factors that influence coronary blood flow. It provides details on the physiologic anatomy of the coronary arteries, including their origin, branches, and distribution. It also discusses the normal coronary blood flow and various physical, metabolic, neural, and neurohormonal factors that can impact coronary flow, such as cardiac cycle, aortic pressure, coronary resistance, heart rate, and myocardial metabolism. The document emphasizes the critical role of metabolic factors and how the heart regulates its own blood flow in response to oxygen demand.
The document summarizes the three main circulatory systems in the body: pulmonary circulation, systemic circulation, and coronary circulation. The pulmonary circulation carries deoxygenated blood from the heart to the lungs and oxygenated blood back to the heart. The systemic circulation involves all blood vessels besides those of the pulmonary circulation, carrying oxygenated blood from the heart to the rest of the body. The coronary circulation is the blood supply to the heart muscle itself, with the right and left coronary arteries branching throughout the heart walls.
Coronary angiograpgy basic n special views by Author- Dr Surg Capt Rajesh Pa...Rajesh Pandey
The document discusses optimal angiographic views for visualizing coronary artery segments. It provides an overview of coronary artery anatomy, including typical vessel course and branching patterns. It then describes the optimal angiographic projections for imaging specific segments of the left main, left anterior descending, left circumflex, and right coronary arteries. These include the left anterior oblique, right anterior oblique, lateral, and anteroposterior views with varying degrees of cranial or caudal angulation. The document aims to help angiographers select views that clearly show coronary anatomy and guide interventional procedures like angioplasty.
This document provides an overview of echocardiographic assessment of mitral regurgitation. It describes the anatomy of the mitral valve including the leaflets, annulus, chordae, and papillary muscles. It discusses Carpentier's functional classification system for describing the mechanism of mitral valve dysfunction. Methods for assessing severity are covered, including color flow imaging, continuous wave Doppler, vena contracta width, proximal isovelocity surface area, and volumetric assessment. Key points are made about evaluating jet direction, duration, and velocity in context of blood pressure. The importance of assessing left ventricular and left atrial size and function is also highlighted.
This document summarizes the echocardiographic assessment of mitral stenosis (MS). It describes the anatomy of the mitral valve and causes of MS. Methods for assessing MS severity include measuring the pressure gradient, mitral valve area using planimetry and pressure half-time, and pulmonary artery pressure. Suitability for percutaneous transvenous mitral commissurotomy is evaluated. Concomitant valve lesions are also identified. Stress echocardiography may be used when symptoms are equivocal. Transesophageal echocardiography is recommended in some cases.
The document provides an overview of echocardiographic assessment of aortic valve stenosis. It describes the normal aortic valve anatomy and imaging windows used to visualize the valve. Common causes of aortic stenosis including bicuspid aortic valve and calcific stenosis are discussed. Methods for Doppler assessment of aortic stenosis including peak velocity, mean gradient, and valve area via the continuity equation are summarized. Limitations of these assessment techniques are also noted.
This document discusses the echocardiographic assessment of diastolic dysfunction. It outlines key parameters used to evaluate diastolic function including mitral inflow patterns, tissue Doppler imaging of mitral annular velocities, and pulmonary venous flow. Normal values for these parameters are provided. Guidelines for grading diastolic dysfunction according to the 2016 ASE/EACVI guidelines are presented. Special considerations for evaluating diastolic function in conditions like HCM, mitral stenosis, mitral regurgitation, and atrial fibrillation are also reviewed. Novel indices using speckle tracking echocardiography to assess diastolic function are mentioned.
This document discusses the echocardiographic evaluation of mitral valve prolapse (MVP). It describes the use of M-mode, 2D, and 3D echocardiography to diagnose MVP and assess mitral regurgitation severity. Measurement of the vena contracta and use of the proximal isovelocity surface area method are emphasized for accurate regurgitant quantification. Surgical indications and repair techniques are also summarized.
Go through the cybercrimes which are occuring recently
Hacking devices are a new method of killing people.
Technologies have been so much advanced.
How to be safe from this?
Go through my works then. :)
Be aware.. Your parents are being treated with devices while treatment.. be sure to know the cybersecurity features of it.
Portable devices (Insulin pumps etc) are also in threat.
This document discusses contrast echocardiography, including the mechanism by which microbubble contrast agents improve echocardiographic imaging. Ideal contrast agents are described as being safe, metabolically inert, long-lasting, strong sound reflectors that are small enough to pass through capillaries. Several FDA-approved second generation contrast agents are mentioned along with their shell materials and gases. Optimal echocardiographic settings for contrast imaging are outlined. Clinical applications of contrast echocardiography include assessing shunts, venous anomalies, and leaks. Examples of its use in specific cases are provided.
This document discusses percutaneous pulmonary valve interventions. It begins by providing background on the history of pulmonary valve interventions, starting with open surgical techniques and moving to percutaneous approaches developed in the 1950s. It then discusses the first successful percutaneous pulmonary valve implantation in 2000. The document provides details on the anatomy of the pulmonary valve, causes of pulmonary valve disease, techniques for percutaneous balloon pulmonary valvuloplasty, indications and contraindications for percutaneous pulmonary valve interventions, and the evolution and indications for transcatheter pulmonary valve implantation.
preop TEE assessment of atrial septal defect is very important for making decision for device closure, properly assessed adequate rims of ASD will reduce risk of device embolization to almost nil.
This document discusses various methods for quantifying intracardiac shunts in patients with congenital heart lesions. It describes invasive oximetry and indicator dilution techniques as well as noninvasive Doppler echocardiography methods. For echocardiography, it outlines techniques for quantifying left-to-right shunts using pulmonary and aortic flow measurements, as well as a simplified method using diameter ratios. It also discusses limitations and sources of error for these quantification methods.
Non infarction Q waves
Precise guide for Allied Health Science Students especially cardiac specialty students, DGNM, B.Sc Nursing & M.Sc Nursing Students regarding Non Infarction Q waves
Basics of Electrophysiologic study, part 1 (2020)salah_atta
An electrophysiologic study involves inserting electrode catheters into the heart to record electrical activity and induce arrhythmias. The document discusses:
1. The procedure involves placing catheters in the heart to record electrograms from the atria, His bundle, ventricles and coronary sinus.
2. The aims are diagnostic to evaluate arrhythmias and bradycardias, and therapeutic for ablation of arrhythmias.
3. Key measurements taken include intervals between P waves, His bundle activation and QRS complex to identify conduction abnormalities.
4. Tracings are analyzed to determine the rhythm, sequence of activation, effects of pacing, and identify arrhythmia mechanisms like accessory pathways
This document discusses the echocardiographic assessment of atrial septal defects (ASDs). It describes the main types of ASDs and notes that 80% are secundum defects. Echocardiography is used to identify and characterize ASDs, detect associated anomalies, diagnose complications, and guide treatment. Transthoracic echocardiography is the initial study, while transesophageal echocardiography provides better views of the atrial septum. Key measurements include ASD size, location, rim dimensions, and quantifying shunt severity with Qp/Qs. Echocardiography guides decisions about ASD device closure or surgery.
This document provides information about percutaneous transvenous mitral commissurotomy (PTMC), a procedure used to treat mitral stenosis. It discusses the stages and severity of mitral stenosis, indications and contraindications for PTMC, assessment of valve morphology, the PTMC procedure technique, instruments used, balloon size selection, post-procedure evaluation, complications, follow-up care, and long-term prognosis. PTMC is performed to improve the opening of a stenosed mitral valve by splitting the fused commissures using a balloon catheter, and is an important therapeutic option for treating symptomatic mitral stenosis.
This document discusses the echocardiographic evaluation of cardiomyopathies. It defines cardiomyopathy and outlines the major classification systems. The main types discussed are dilated cardiomyopathy, hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, restrictive cardiomyopathy, and unclassified cardiomyopathy. Specific features of dilated cardiomyopathy are then reviewed in detail, including morphological features, causes, Doppler findings, and involvement of the right ventricle and left atrium. Evaluation of diastolic dysfunction and ischemic cardiomyopathy are also summarized.
A lecture on the echocardiographic evaluation of hypertrophic cardiomyopathy. Starts with an overview of the topic then a systematic approach to diagnosis and then a differential diagnosis followed by take-home messages and conclusion.
Raja Lahiri provides an overview of coronary angiography. Key points include:
- Coronary angiography is the current gold standard for visualizing the coronary arteries through X-ray imaging with contrast injection.
- The history of coronary angiography began in the 1920s-1940s with early experiments in cerebral and cardiac catheterization.
- Modern techniques involve accessing arteries typically through the femoral or radial arteries to insert a catheter for contrast injection into the coronary arteries under X-ray imaging.
- Multiple angiographic views are needed to visualize different segments of the left and right coronary arteries. Coronary angiography is used to evaluate coronary artery disease, graft patency, and left ventricular function.
This document discusses coronary circulation and the factors that influence coronary blood flow. It provides details on the physiologic anatomy of the coronary arteries, including their origin, branches, and distribution. It also discusses the normal coronary blood flow and various physical, metabolic, neural, and neurohormonal factors that can impact coronary flow, such as cardiac cycle, aortic pressure, coronary resistance, heart rate, and myocardial metabolism. The document emphasizes the critical role of metabolic factors and how the heart regulates its own blood flow in response to oxygen demand.
The document summarizes the three main circulatory systems in the body: pulmonary circulation, systemic circulation, and coronary circulation. The pulmonary circulation carries deoxygenated blood from the heart to the lungs and oxygenated blood back to the heart. The systemic circulation involves all blood vessels besides those of the pulmonary circulation, carrying oxygenated blood from the heart to the rest of the body. The coronary circulation is the blood supply to the heart muscle itself, with the right and left coronary arteries branching throughout the heart walls.
The document summarizes the coronary circulation system. The coronary arteries carry oxygen-rich blood to the heart muscle and branch into smaller vessels that penetrate the myocardium. Coronary blood flow is regulated to match the oxygen demands of the heart. During systole, the compressing heart muscle walls can temporarily reduce blood flow through the penetrating vessels. Several factors influence coronary blood flow, including oxygen consumption by the heart muscle, adenosine release during hypoxia, and sympathetic stimulation increasing heart rate and contractility. Between a blood pressure of 60-150 mm Hg, coronary flow remains stable due to autoregulation, but very low diastolic pressures can reduce coronary filling. Tachycardia may cause ischemia if it shortens diast
The document summarizes key aspects of cardiac physiology including the cardiac cycle, myocardial action potential, coronary circulation, and jugular venous pulse (JVP). It describes the electrical and mechanical events of the heart during one cardiac cycle as represented by an electrocardiogram (ECG) and pressures. It also discusses the anatomy and regulation of coronary blood flow to meet metabolic demand of the myocardium.
The circulatory system uses the heart to pump blood through vessels around the body. It has two circuits - pulmonary circulation between the heart and lungs, and systemic circulation between the heart and body. The heart has four chambers that pump deoxygenated blood to the lungs and oxygenated blood around the body in a continuous cycle. Blood vessels include arteries carrying blood away from the heart, veins returning it, and capillaries where exchange occurs. The circulatory system transports blood cells, platelets, plasma, oxygen, nutrients, hormones, carbon dioxide and waste products.
The document discusses the coronary circulation, which is the circulation of blood through the blood vessels of the heart muscle. It involves the coronary arteries, which deliver oxygen-rich blood to the heart, and cardiac veins, which remove deoxygenated blood. The document outlines an activity where students will trace the path of blood flow through different containers representing parts of the heart to learn about the coronary circulation.
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The coronary circulation supplies blood to the heart muscle. The right and left coronary arteries branch to form a dense capillary network around each cardiac muscle cell. Coronary blood flow is regulated by metabolic demand of the heart as well as mechanical factors related to the cardiac cycle. During systole, compressive forces within the heart reduce coronary flow, while flow increases during diastole when the vessels dilate. Multiple chemical and neural factors also control resistance within the coronary vasculature to match blood supply with myocardial oxygen requirements. Imbalances can lead to ischemia if demand outpaces supply.
The coronary circulation supplies blood to the heart muscle. Blood flows through the right and left coronary arteries which branch from the aorta. Coronary blood flow increases during cardiac diastole as pressure in the intramural vessels is released, allowing more blood to enter the myocardium. Disruptions to coronary blood flow can cause myocardial ischemia, infarction, and angina pectoris due to insufficient oxygenation of heart tissue. Coronary occlusion from atherosclerosis is a leading cause of restricted blood flow and these downstream effects.
The document summarizes several aspects of regional circulations, including the coronary, cutaneous, cerebral, skeletal muscle, splanchnic, and renal circulations. Specific details provided on the coronary circulation include its high blood flow even at rest, regulation of flow through metabolic and neural mechanisms, and implications for conditions like myocardial infarction and heart failure. Key aspects of the cutaneous circulation discussed are its role in temperature regulation through sympathetic nervous system control of arterioles and anastomoses, and local vasodilation or constriction in response to heating and cooling.
The document discusses coronary circulation and the arteries that supply blood to the heart. It notes that there are two main coronary arteries - the right and left coronary arteries. The right coronary artery supplies most of the right ventricle, right atrium, conducting system, and parts of the left ventricle and atrium. The left coronary artery supplies most of the left ventricle and atrium as well as parts of the interventricular septum. It also notes that the atrioventricular node is usually supplied by the right coronary artery.
The document discusses regulation of coronary blood flow. It begins by outlining the coronary vessels and blood supply to the heart. The coronary arteries arise from the aorta and branch within the heart muscle to supply it with blood. Coronary blood flow is highest during cardiac diastole when the heart muscle is relaxed and lowest during systole when the heart contracts. Multiple factors influence coronary blood flow including physical factors like blood pressure, chemical factors such as local metabolic needs, and neural and hormonal control. The heart has an autoregulatory mechanism to maintain adequate blood flow over a range of perfusion pressures. Disruptions to this system can lead to pathological thrombosis in the coronary arteries and consequences like myocardial infarction.
The coronary circulation supplies blood to the heart muscle. There are two main coronary arteries - the left and right coronary arteries - that originate from the aorta and branch throughout the heart muscle. The left coronary artery supplies the left side of the heart while the right coronary artery supplies the right side. These arteries branch into smaller arterioles and capillaries to deliver oxygenated blood before draining into coronary veins that remove deoxygenated blood, mostly through the coronary sinus, and return it to the right atrium.
The document summarizes key aspects of coronary blood flow regulation and determinants of myocardial oxygen consumption. It discusses how:
1) Myocardial contraction and oxygen delivery are closely linked, and the balance between oxygen supply and demand is critical for normal heart function.
2) The major determinants of myocardial oxygen consumption are heart rate, systolic pressure, and left ventricular contractility. Increases in these factors require proportional increases in coronary flow and oxygen delivery.
3) Coronary vascular resistance has three main components - epicardial conduit resistance, microcirculatory resistance, and extravascular compressive resistance which varies through the cardiac cycle. Maintaining the balance of these factors is important for adequate oxygen supply
The document summarizes the anatomy and physiology of the coronary circulation. It describes:
1) The coronary arteries originate from the aorta and branch to form the right and left coronary arteries which further divide to supply the myocardium.
2) The left main coronary artery divides into the left anterior descending artery and left circumflex artery. The right coronary artery supplies the right side of the heart.
3) Coronary blood flow is highest in diastole when the heart muscle is relaxed to perfuse the subendocardial layers of the left ventricle. Various neural and chemical factors regulate blood flow to meet myocardial demand.
The document contains instructions from Dr. Nilesh Kate, an associate professor in the department of physiology, for drawing labeled diagrams of the excretory system including the renal filtration membrane, nephron, glomerular filtering membrane, innervations to the urinary bladder, cystometrogram, and the pathway for the micturition reflex.
The cardiovascular system consists of the heart, blood vessels, and blood. The heart is a hollow muscular organ located in the chest that pumps blood through two circuits: systemic circulation and pulmonary circulation. It has four chambers - right and left atria and ventricles separated by valves. Blood vessels include arteries, which carry blood away from the heart, and veins, which carry blood back to the heart. The cardiovascular system also contains a conduction system that initiates and regulates the heartbeat, starting with the sinoatrial node. Blood vessels have three layers - tunica intima, media, and externa - that vary in thickness and composition between arteries and veins.
This document provides an overview of coronary circulation and coronary blood flow. It discusses the anatomy of the coronary blood vessels, characteristics of coronary blood flow such as rates at rest and during exercise. It describes phasic changes in coronary blood flow during the cardiac cycle. Methods for measuring coronary blood flow are presented. The regulation of coronary blood flow through local control mechanisms like autoregulation and metabolic factors as well as neural and hormonal influences are reviewed. Finally, factors that can affect coronary blood flow such as blood pressure, exercise, and hormones are outlined.
The document provides an overview of cardiac anatomy and physiology. It describes the layers of the heart including the epicardium, myocardium, and endocardium. It outlines the four chambers of the heart and the three types of circulation - pulmonary, systemic, and coronary. Key components of the cardiac cycle are explained such as systole, diastole, and the roles of the heart valves. The conduction system and how electrical signals trigger mechanical contraction are summarized. Factors that determine cardiac output like heart rate, preload, contractility, and afterload are also defined.
The cardiovascular system consists of the heart and blood vessels that circulate blood throughout the body. The heart has four chambers and uses valves to ensure one-way blood flow. It is regulated by the autonomic nervous system. During each cardiac cycle, the atria contract followed by ventricular contraction that pumps blood out of the heart into the arteries. Relaxation of the ventricles allows blood to flow back into the heart. The conductive system generates electrical signals that coordinate the heart's pumping action.
The document provides an overview of the cardiovascular system, including its major components and functions. It defines blood and its functions, and describes the composition of blood and the heart. The heart has four chambers - two atria and two ventricles. It explains the cardiac cycle and conduction system, including the sinoatrial node, atrioventricular node, and Purkinje fibers. The document also describes the coronary and pulmonary circulations, and the structure and function of arteries, veins, and capillaries throughout the body.
The heart is a hollow muscular organ located in the middle mediastinum. It is approximately the size of a fist and weighs 250-300 grams. The heart has four chambers - two upper atria and two lower ventricles. It is surrounded by a double-walled sac called the pericardium. The heart pumps blood through two circuits - the pulmonary circulation and the systemic circulation - using a series of valves to ensure one-way blood flow.
The document describes the anatomy and physiology of the heart. It discusses the location and size of the heart, its chambers including the right and left atria and ventricles, and major blood vessels. It explains the coronary circulation including the right and left coronary arteries, areas of distribution, collateral circulation, and coronary dominance. It also covers the layers of the heart wall, conduction system, valves, coronary venous drainage and lymphatics. Finally, it summarizes the regulation of coronary blood flow including autoregulation, perfusion pressure, vascular resistance, and neural and humoral control.
The cardiovascular system consists of the heart and blood vessels. The heart has four chambers and uses valves to ensure one-way blood flow. It pumps deoxygenated blood to the lungs and oxygenated blood throughout the body. Blood travels through arteries, capillaries, and veins in both pulmonary and systemic circuits. The heart's conduction system uses electrical signals to coordinate contractions. Factors like preload and afterload influence cardiac output. Blood pressure is regulated by baroreceptors, chemoreceptors, and the renin-angiotensin system.
1 GNM - Anatomy unit - 4 - CVS by thirumurugan.pptxthiru murugan
By:M. Thiru murugan
Unit – IV:
Heart : Structure, functions including conduction system & cardiac cycle
Blood vessels : Types, Structure and position
Circulation of blood
Blood pressure and pulse
Heart
The circulatory system:
It consisting of blood, blood vessels, and heart.
This supplies oxygen and other nutrients,
Transports hormones
Removes unnecessary waste products.
Heart and its Structure
The heart is a muscular organ about the size of a fist,
located in mediastinum just behind and slightly left of the breastbone (sternum).
The heart pumps blood through the blood vessels (arteries and veins called the cardiovascular system).
Structure of heart:
Layers of the heart (3)
Chambers of the heart (4)
Valves of the heart (4)
Blood vessels of the heart (5)
3 layers of the heart:
Epicardium/pericardium: outer protective layer of the heart. Visceral and parietal (pericardial fluid). Protection for the heart and big vessels and prevent collapse of heart,
Myocardium: muscular middle layer wall of the heart. Responsible for keeping the heart pumping blood around the body.
Endocardium: the inner layer of the heart. Regulate blood flow through the chambers of the heart and pass the electrical impulses
Chambers of the heart:
The atria: These are the 2 upper chambers, which receive blood. RA / LA
The ventricles: These are the 2 lower chambers, which discharge blood. RV/ LV
A wall of tissue called the septum separates the left and right atria called atrial septum and the left and right ventricle called ventricular septum.
Valves in the heart:
There are four valves
Two-atrio ventricular valves: The 2 types: bicuspid (mitral) - LA & LV, and tricuspid valves - RA & RV.
Two-semilunar valves: The aortic valves and the pulmonary valve.
Major blood vessels of the heart
There are 5 major blood vessels
Pulmonary artery
Pulmonary veins
Aorta[artery]
Inferior vena cava [IVC] veins
Superior vena cava [SVC] veins
Functions of heart:
Pumping oxygenated blood to the body parts.
Pumping nutrients and other vital substances
Receiving deoxygenated blood and carrying metabolic waste products from the body
Pumping deoxygenated blood to the lungs for oxygenation.
Maintaining blood pressure.
Conduction system
The electrical conduction system that controls the heart rate.
This system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to contract and pump blood.
The electrical pulses determine the order in which the chambers contract & the heart rate
Conductive system consist of:
SA Node
AV Node
Bundle of his or His Bundles – bundle of branches
( right and left)
4. Purkinje fibres
Sinoatrial node (SA) : also known as the pace maker of the heart and Located in the upper wall of the right atrium
Made up of both muscle and nervous tissue
Here the electrical impulse begins
Atrioventricular (AV) node:
located between the atria and ventricles of the heart
The electrical impulse is carried fr
The document discusses the anatomy and physiology of the heart. It begins by outlining the topics to be covered, including the functions, size/location, anatomy, histology, stimulation, and cardiac cycle of the heart. It then delves into the specific details of each topic. The heart has four chambers and valves that ensure one-way blood flow. Specialized cardiac muscle and conduction pathways coordinate heart contractions. The coronary arteries supply blood to the heart muscle itself.
The heart has four chambers. The two superior receiving chambers are the atria (= entry halls or chambers), and the two inferior pumping chambers are the ventricles (= little bellies).
On the anterior surface of each atrium is a wrinkled pouchlike structure called an auricle
The heart is a four-chambered muscular organ located in the mediastinum protected by the pericardium. It pumps blood through two circuits - the pulmonary circuit to the lungs and systemic circuit to the rest of the body. The heart walls have three layers - epicardium, myocardium and endocardium. It has four chambers - two upper atria which receive blood and two lower ventricles which pump blood out. It uses valves to ensure one-way blood flow. The sinoatrial node initiates electrical impulses which coordinate contractions through the conduction system.
This document provides an overview of cardiovascular disorders and ischemic heart disease (IHD). It defines IHD as heart weakening caused by reduced blood flow to the heart, typically due to coronary artery disease where the coronary arteries narrow. It discusses the anatomy of the heart including the four chambers, great vessels, valves, and cardiac muscle cells. It also covers ECGs, cardiac conduction, circulatory system functions, common cardiovascular diseases like IHD, strokes, peripheral artery disease, aortic disease, and high blood pressure, as well as types of angina.
This system has three main components: the heart, the blood vessel and the blood itself. The heart is the system's pump and the blood vessels are like the delivery routes. Blood can be thought of as a fluid which contains the oxygen and nutrients the body needs and carries the wastes which need to be removed.
Vascular structure head and neck Almas khan , Khorfakkhan hospitalalmasmkm
This document discusses the vascular structure of the head and neck. It begins by explaining the components of the circulatory system, including the cardiovascular and lymphatic systems. It then describes the three main circuits of circulation: coronary, pulmonary, and systemic. The document focuses on the head and neck vasculature, detailing arteries like the aorta, carotid, vertebral and various branches. It also discusses venous drainage and the circle of Willis. Common clinical indications involving the head and neck vessels are presented. In conclusion, the circulatory system of the head and neck is reviewed to aid in angiography identification and understanding normal and abnormal vascular distributions.
The document discusses the anatomy and functions of the heart. It describes the heart's location in the chest cavity and its shape. The heart has four chambers - two upper atria and two lower ventricles. Blood flows from the veins into the right atrium, then into the right ventricle and to the lungs before returning to the left atrium and ventricle and being pumped back into the arteries. Heart valves ensure one-way blood flow. The cardiac cycle involves coordinated contractions of the atria and ventricles.
The document summarizes key aspects of the cardiovascular system. It describes the anatomy of the heart, including the four chambers and major valves. It explains that deoxygenated blood enters the right side of the heart and is pumped to the lungs, while oxygenated blood enters the left side and is pumped out to the body. It also discusses regulation of blood flow and pressure through the heart cycle and autonomic nervous system.
Vascular Devices is developing an implanted vessel clearing system to remove blockages in coronary and peripheral arteries. Their solution uses MRI mapping to navigate biocompatible modules that are programmed to remove blockages via laser ablation. This would allow access to smaller arteries compared to current tethered catheter systems. They have outlined a development roadmap and funding requirements to bring the product to market. The global market for interventional cardiovascular devices is $11.7 billion annually, currently dominated by Boston Scientific, Medtronic and Abbott who only offer tethered solutions. Vascular Devices' technology has the potential to transform endovascular treatments.
Title: "NYU Stern Innovators". Author: Clifford Thornton. Publication: Global Innovation Magazine. Issue 10. January 2017. Pg. 20. More details: Cliff Thornton takes us back to his old University and discovers some of the exciting and innovating companies that some of the alumni are spearheading.
A sample of my pitch-deck writing and related market research for a revolutionary and next-generation micro cardiovascular stent, which incorporates nanotechnology, MEMS, computer controlled surgery algorithms, and MRI. I conducted this work for a client, an inventor and scientist who gave me permission to make this sample public.
An Informational Deck about William H. Zurn's United States Patented (USPO) Advanced Multi-Functional Digital Oil Drill-Bit Technology. A Smart and Versatile Oil Drill-bit Device & System
The Future of Cardiology (2018 – 2030): Advanced Treatments to Combat the Global Advance of Cardiovascular Diseases. I presented this at Conference Series Cardiology Conference 2017 in Philadelphia, Pennsylvania on 09/01/2017. I first look the the number of people globally affected by cardiovascular diseases. Then I look at the cumulative "lost productivity" globally as a result of people suffering from cardiovascular diseases. Following that, I look at the total costs of treating cardiovascular diseases globally. Then I present the reasons why cardiovascular diseases are rising so rapidly throughout the world - lifestyle/clinical. Then I look at the rates of smoking throughout the world; one of the main culprits of cardiovascular diseases (CVDs). The next slides look at the "Gold Standard" of care for coronary artery diseases (CAD), congestive heart failure (CHF), and aortic valve disease. I also present what is driving industry consolidation and associated major transactions. I then provide some perspective on the future of interventional cardiology. And finally, I provide some insight into "evolving technologies" for cardiovascular care and interventional cardiovascular care. It was a lengthy presentation, but I feel, all critical. This is a very complex field. It takes at least 12 continuous years of education and training to become an interventional or non-interventional cardiologist (4 years pre-med, 3 years medical school, 3 years medical residency, 2 years fellowship (where a cardiologist selects and trains on their cardiovascular specialties)). Some authorities are even calling for post-fellowship training for procedures like transcatheter aortic valve implantation (TAVI) and pacemaker/ICD implantation.
A presentation and review of American Indian nations; their cultures, geography, unique characteristics, impact on the formation and government of the United States, and familial or tribal cultures.
Promoting Wellbeing - Applied Social Psychology - Psychology SuperNotesPsychoTech Services
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Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
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share - Lions, tigers, AI and health misinformation, oh my!.pptxTina Purnat
• Pitfalls and pivots needed to use AI effectively in public health
• Evidence-based strategies to address health misinformation effectively
• Building trust with communities online and offline
• Equipping health professionals to address questions, concerns and health misinformation
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Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Osteoporosis - Definition , Evaluation and Management .pdfJim Jacob Roy
Osteoporosis is an increasing cause of morbidity among the elderly.
In this document , a brief outline of osteoporosis is given , including the risk factors of osteoporosis fractures , the indications for testing bone mineral density and the management of osteoporosis
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These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
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1. External Heart: Arteries that Supply
the Heart
• Coronary circulation is the functional blood
supply to the heart muscle itself (i.e. the fuel
for the heart)
• Collateral routes ensure blood delivery to
heart
• even if major vessels are occluded/clogged
2. Different parts of the heart are supplied by
different coronary artery segments
Heart chambers in geometric
models are subdivided into
perfusion zones using
anatomic knowledge in the
FMA ontology
3. CORONARY ARTERIES SUPPLYING THE
HEART WITH OXYGEN-RICH BLOOD
Right
Coronary
Artery
(RCA)
Right
Coronary
Artery
(RCA)
Left Main
Coronary
Artery (LMCA)
Left Main
Coronary
Artery (LMCA)
Left Anterior
Descending
Artery (LAD)
Left Anterior
Descending
Artery (LAD)
Posterior
Descending Artery
(PDA)
Posterior
Descending Artery
(PDA)
Left Circumflex
Coronary Artery
(LCx)
Left Circumflex
Coronary Artery
(LCx)
5. External Heart: Arteries that Supply
the Heart
• Right coronary artery (in atrioventricular
groove)
– Supplies the right atrium and nearly all the
right ventricle
– marginal –supply the myocardium of the
– lateral right side of the heart
– posterior interventricular artery – supply the
– interventricular septum and adjacent portions
of the ventricular walls
6. External Heart: Arteries that Supply
the Heart
• Left coronary artery:
– Circumflex supplies the left atrium and the
posterior wall of the left ventricle
– Anterior interventricular artery supplies the
anterior wall of both ventricles
7. CERTAIN HEART WALL SEGMENTS ARE FED BY
CERTAIN CORONARY ARTERIES AS SPECIFIED BELOW:
BASE
MID
APEX
A4C
A2C
PARASTERNAL
LONG-AXIS
Key:
Red = LAD
Yellow = LCx
Green = RCA
LAD = Left Anterior Descending Coronary Artery, LCx = Left Circumflex Coronary
Artery, RCA = Right Coronary Artery
8. DIVIDING THE LEFT VENTRICLE INTO KEY SEGMENTS
Apical
Third
Apical
Third Mid
Third
Mid
Third
Basal
Third
Basal
Third
12. SAMPLE – SEGMENTAL SCORING
Ortiz-Perez, J. T. et al. J Am Coll Cardiol Img 2008;1:282-293
13. Representative Segmentation and Pattern of Contrast
HE Over 17-Segments of the LAD, RCA, and LCX
Arteries
Ortiz-Perez, J. T. et al. J Am Coll Cardiol Img 2008;1:282-293
14. HEART ANATOMY – COVERINGS OF THE HEART
• Coverings of the Heart: Anatomy
• Pericardium – a double-walled sac around the
• heart composed of:
• A superficial fibrous pericardium
• A deep two-layer serous pericardium
• The parietal layer lines the internal surface
• of the fibrous pericardium
• The visceral layer or epicardium lines the
• surface of the heart
• They are separated by the fluid-filled
• pericardial cavity
• Coverings of the Heart: Physiology
• The pericardium:
• Protects the heart
15. COVERINGS OF THE HEART:
PHYSIOLOGY
• The pericardium:
– Protects and anchors the heart
– Prevents overfilling of the heart with blood
– Allows for the heart to work in a relatively
– friction-free environment
16. PERICARDIUM OF THE HEART
• Pericardium (3 layers)
• 1) Outer-fibrous pericardium
– Serous pericardium
• 2) parietal
• 3) visceral (epicardium)
• Pericardial Cavity
– between layers of serous pericardium
– serous fluid
– lubricate heart while beating
21. EXTERNAL FEATURES OF THE HEART
• Interventricular sulcus
• Coronal/Coronary sulcus
• Auricles of atria
• Apex
• Base
• Coronary vessels
• Ligamentum Arteriosum
22. External Heart: Major Vessels of
the Heart (Anterior View)
• External Heart: Major Vessels of
the Heart (Anterior View)
• Vessels returning blood to the heart include:
– Superior and inferior vena cava
– Right and left pulmonary veins
• Vessels conveying blood away from the heart:
– Pulmonary trunk, which splits into right and
– left pulmonary arteries
– Ascending aorta (three branches) –
– brachiocephalic, left common carotid, and
– subclavian arteries
24. External Heart: Major Vessels of
the Heart (Posterior View)
Vessels returning blood to the heart include:
•Right and left pulmonary veins
• Superior and inferior vena cava
• Vessels conveying blood away from the heart
include:
• Aorta
• Right and left pulmonary arteries
25. FLOW OF BLOOD
• O2-poor blood (S+I VC, Coronary Sinus) enters Rt Atrium
• Travels through Tricuspid Valve into Rt Ventricle
• Pumped out through Pulmonary Semilunar Valve into
Pulmonary trunk (branches into Pulmonary Arteries) and to
lungs
•After circulating through lungs, O2-rich blood returns to the
heart through 4 Pulmonary veins
• The O2-rich blood enters the Left Atrium
• Travels through Bicuspid/Mitral Valve into Left Ventricle
• Pumped out through Aortic Semilunar Valve into Aorta to be
distributed to rest of body by descending aorta and branches
of aortic arch
26. Pathway of Blood Through the
Heart and Lungs
Right atrium > tricuspid valve > right ventricle >
pulmonary semilunar valve > pulmonary arteries >
Lungs > pulmonary veins > left atrium >
Mitral valve > left ventricle > Left ventricle >
aortic semilunar valve > aorta > systemic circulation
28. Cardiovascular Flow of Blood
• HeartArteries(conducting-distributing)
ArteriolesCapillaries of tissues
• At Capillaries O2 is delivered and CO2 picked
up
•CapillariesVenulesVeinsHeart
32. Cardiac Intrinsic Conduction
IMPORTANT - Various
nodes and intrinsic Heart
Rate Generated:
• SA Node – 60 – 100
Beats/min
• AV Node – 40 – 60
Beats/min
• Bundle of His – 40 – 60
Beats/min
•Purkinje Fibers – Last
resort – 20 – 40
Beats/min
IMPORTANT - Various
nodes and intrinsic Heart
Rate Generated:
• SA Node – 60 – 100
Beats/min
• AV Node – 40 – 60
Beats/min
• Bundle of His – 40 – 60
Beats/min
•Purkinje Fibers – Last
resort – 20 – 40
Beats/min
33. Heart Excitation Related to ECG
atrial excitation begins
Impulse delayed
at AV node
Impulse passes to
heart apex; ventricular
excitation begins
Ventricular excitation
complete
SA node AV node Purkinje
fibers
Bundle
branches
34. Electrocardiography
Electrical activity is recorded by
electrocardiogram (ECG)
• P wave corresponds to depolarization of SA
•node
•QRS complex corresponds to ventricular
•depolarization
•T wave corresponds to ventricular
repolarization
•Atrial repolarization record is masked by the
•larger QRS complex
38. Cardiac Cycle
Cardiac cycle refers to all
events associated
with blood flow through
the heart
•Systole – contraction of heart muscle
•Diastole – relaxation of heart muscle
39. Phases of the Cardiac Cycle
Phases of the Cardiac Cycle
• Isovolumetric relaxation – early diastole
• Ventricles relax
• Backflow of blood in aorta and pulmonary trunk closes semilunar valves
• Dicrotic notch – brief rise in aortic pressure caused by backflow of blood. This
backflow
• causes the valve to close and creates a slight
pressure rebound
42. Cardiodynamics
Cardiac output (CO) : the amount of blood
pumped by each ventricle in one minute
•Cardiac output equals heart rate times stroke
volume
Cardiac output (ml/min) =
Heart Rate (HR) (beats/min) X
Stroke Volume (SV) (ml/beat)
43. Cardiodynamics
Heart rate (HR) : number of heart beats in a
minute
•Stroke volume (SV) – amount of blood
ejected from the ventricles with each beat
•SV = EDV - ESV
45. Cardiodynamics
Ventricular pressure increases forcing blood
through the semilunar valves: ventricular
Ejection
•End-systolic volume (ESV)
•Amount of blood that remains in the
ventricles after the contraction and closing of
the semilunar valves
46. Factors Affecting stroke volume
(EDV-ESV)
EDV (end diastolic volume) is affected by
•Venous return - amount of blood returning to
the heart or blood flow during filling time
•High venous return= high EDV
•Slow heartbeat and exercise increase venous
return to the heart, increasing SV
47. Factors Affecting stroke volume
(EDV-ESV)
Filling time -duration of ventricular diastole
•Depends on the heart rate
•Blood loss and extremely rapid heartbeat
decrease SV
•The longer the filling time the higher the
EDV will be
48. Factors Affecting stroke volume
(EDV-ESV)
Preload
• Stretchiness of the ventricles during
Diastole
• Directly proportional to the EDV
• Frank-Starling principle (“more in = more out”)
or increased EDV=increased SV
49. Factors Affecting stroke volume
(EDV-ESV)
ESV (end systolic volume). It is influenced by:
•Contractility
• Force produced during a contraction
• Positive inotropic (increase Calcium entry)
• Increased sympathetic stimuli
• Certain hormones, some drugs
• Increase SV by decreasing ESV
50. Factors Affecting stroke volume
(EDV-ESV)
Afterload
•The pressure that must be overcome for the
ventricles to eject blood (back pressure
exerted by blood in the large arteries leaving
the heart)
• Increased afterload will increase ESV and
decrease SV
• Increased by factors that restricts arterial blood
flow
60. Coronary arteries are the FIRST
branches of the aorta!
1. Coronary arteries
(a) Left coronary artery
(b) Right coronary artery
(c) Interventricular branches
(d) Right marginal branch
2. Cardiac veins
63. Intrinsic regulation of heart beat
1. Sinoatrial node is
PACEMAKER OF
HEART, and beginning
of process. Geenrates
periodic impulses that
initiate contraction of
right atrium.
2. Signal then runs to
Atrioventricular node.
Message is passed along
a track of Purkinje fibers
called the...
3. Atrioventricular bundle.
Atrioventricular bundle
then splits into right and
left limbs/branches that
pass to individual inner
ventricular walls on right
and left.
67. Heartrate
Resting heartrate average is variable
depending on ages, sex, weight, etc.
MAXIMUM HEARTRATE used to be
calculated by the formula:
220 - your age = normal maximum
heartrate.
(This is now known to be oversimplified
and incorrect.)