The document discusses the coronary circulation system. It describes how the heart muscle is supplied by the right and left coronary arteries. It also discusses variations in dominance between these arteries. The arteries branch into smaller vessels that run through the heart muscle. Venous drainage occurs through the coronary sinus and anterior coronary veins. Coronary blood flow fluctuates with the cardiac cycle, decreasing during systole and increasing during diastole due to changes in intramural pressure. Factors like oxygen demand, metabolites, perfusion pressure, and nerves help regulate blood flow through autoregulation.
Here's a Presentation made by GROUP F on CORONARY CIRCULATION. This slide was created for Problem Based Learning (PBL) wrap up session Held At Kathmandu University- Birat Medical College Teaching Hospital (BMCTH).
feel free to Download and share this slide. You can leave comments for further improvement on other presentations. Thankyou. Cheers!
Here's a Presentation made by GROUP F on CORONARY CIRCULATION. This slide was created for Problem Based Learning (PBL) wrap up session Held At Kathmandu University- Birat Medical College Teaching Hospital (BMCTH).
feel free to Download and share this slide. You can leave comments for further improvement on other presentations. Thankyou. Cheers!
SEMINAR ON BLOOD PRESSURE REGULATION, Determinants of Arterial BP
Functions Of Blood Pressure
Physiological Variations In Bp
Blood Pressure Regulation
Applied Physiology
“Cardiac output refers to the volume of blood pumped out per ventricle per minute.”
Cardiac output is the function of heart rate and stroke volume.
STROKE VOLUME:
The amount of blood pumped by the left ventricle in one compression is called the stroke volume.
Heart Rate
The cardiac output increases with the increase in heart rate.
THE CORONARY CIRCULATION of the heart in the bodyAsiiAyodimeji
Coronary circulation of the heart the heart is supply by two artery On the side of the heart :Right coronary artery and left coronary artery the Right coronary artery supply the Right portion of the heart the Right ventricle and Right auricle
SEMINAR ON BLOOD PRESSURE REGULATION, Determinants of Arterial BP
Functions Of Blood Pressure
Physiological Variations In Bp
Blood Pressure Regulation
Applied Physiology
“Cardiac output refers to the volume of blood pumped out per ventricle per minute.”
Cardiac output is the function of heart rate and stroke volume.
STROKE VOLUME:
The amount of blood pumped by the left ventricle in one compression is called the stroke volume.
Heart Rate
The cardiac output increases with the increase in heart rate.
THE CORONARY CIRCULATION of the heart in the bodyAsiiAyodimeji
Coronary circulation of the heart the heart is supply by two artery On the side of the heart :Right coronary artery and left coronary artery the Right coronary artery supply the Right portion of the heart the Right ventricle and Right auricle
Welcome to "Anatomy of the Heart," an enlightening presentation that takes you on a captivating journey through the intricate structure of the human heart.
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
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
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micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
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
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
These lecture slides, by Dr Sidra Arshad, offer a quick overview of 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 leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
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. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
2. DISTRIBUTION OF CORONARY BLOOD
VESSELS
• Heart muscle is supplied by two coronary
arteries, namely right and left coronary
arteries, which are the first branches of aorta.
• Arteries encircle the heart in the manner of a
crown, hence the name coronary arteries
(Latin word corona = crown).
3. Right and Left Coronary Arteries
• Right coronary artery supplies whole of the
right ventricle and posterior portion of left
ventricle. Left coronary artery supplies mainly
the anterior and lateral parts of left ventricle.
4. Variations in Coronary Arteries
1. In 50% to 60% of human beings, the right
coronary artery is larger (right dominant) and
supplies more blood to heart than left
coronary artery
2. In 15% to 20% of human beings, the left
coronary artery is larger (left dominant)
3. In 20% to 30% of human beings, both arteries
supply almost equal amount of blood.
5. Branches of Coronary Arteries
• Coronary arteries divide and subdivide into
smaller branches, which run all along the surface
of the heart.
• Smaller branches are called epicardiac arteries
and give rise to further smaller branches known
as final arteries or intramural vessels.
• Final arteries run at right angles through the
heart muscle, near the inner aspect of wall of the
heart.
6. VENOUS DRAINAGE
• Venous drainage from heart muscle is by three
types of vessels.
1. Coronary Sinus
• Coronary sinus is the larger vein draining 75% of
total coronary flow. It drains blood from left side
of the heart and opens into right atrium near
tricuspid valve.
1. Anterior Coronary Veins
• Anterior coronary veins drain blood from right
side of the heart and open directly into right
atrium.
7. 3. The besian Veins
• The besian veins drain deoxygenated blood
from myocardium, directly into the concerned
chamber of the heart.
8. PHYSIOLOGICAL SHUNT
• Physiological shunt is the diverted route
(diversion), through which the venous
(deoxygenated) blood is mixed with arterial
blood.
• Deoxygenated blood flowing from the besian
veins into cardiac chambers makes up the part of
normal physiological shunt.
• Other component of physiological shunt is the
drainage of deoxygenated blood from bronchial
circulation into pulmonary vein, without being
oxygenated.
9. PHASIC CHANGES IN CORONARY
BLOOD FLOW
• Blood flow through coronary arteries is not
constant. It decreases during systole and
increases during diastole.
• Intramural vessels or final arteries supplying
myocardium are perpendicular to the cardiac
muscles. So, during systole, the intramural vessels
are compressed and blood flow is reduced.
• During diastole, the compression is released and
the blood vessels are distended. So, the blood
flow increases.
10. PHASIC CHANGES IN LEFT VENTRICLE
• In left ventricle, during the onset of isometric
contraction, blood flow declines sharply due
to two reasons, namely increase in myocardial
tissue pressure and decrease in aortic
pressure.
• During ejection period, rise in aortic pressure
causes a sharp rise in flow into left coronary
artery.
11. • However, the flow of blood through coronary
capillaries is less. It is due to the high
intramural myocardial pressure in the
contracting ventricle. Decreased blood flow is
maintained until the closure of aortic valve,
i.e. till the end of systole.
• During the onset of diastole, blood flow rises
and it reaches the peak sharply. During the
later part of diastole, the flow is reduced
slightly along with decreasing aortic pressure.
Once again, there is a sharp fall in flow during
the onset of systole
12. PHASIC CHANGES IN RIGHT
VENTRICLE
• A small amount of blood flows into right
ventricle during systole. It is because the force
of contraction is not as severe as in the case of
left ventricle. Still, the amount of blood
flowing is very much less than that during
diastole
13. FACTORS REGULATING CORONARY
BLOOD FLOW
Autoregulation
• Like any other organ, heart also has the
capacity to regulate its own blood flow by
autoregulation. Coronary blood flow is not
affected when mean arterial pressure varies
between 60 and 150 mm Hg. Several factors
are involved in the autoregulation mechanism.
14. • Coronary blood flow is regulated mainly by
local vascular response to the needs of cardiac
muscle.
Factors regulating coronary blood flow:
1. Need for oxygen
2. Metabolic factors
3. Coronary perfusion pressure
4. Nervous factors.
15. 1. NEED FOR OXYGEN
• Oxygen is the most important factor
maintaining blood flow through the coronary
blood vessels. Amount of blood passing
through coronary circulation is directly
proportional to the consumption of oxygen by
cardiac muscle.
16. • Even in resting condition, a large amount of
oxygen, i.e. 70% to 80% is consumed from the
blood by heart muscle than by any other
tissues.
• In conditions associated with increased
cardiac activity, the need for oxygen increases
enormously.
• Thus, the need for oxygen, i.e. hypoxia
immediately causes coronary vasodilatation
and increases the blood flow to heart.
17. 2. METABOLIC FACTORS
• Coronary vasodilatation during hypoxic
conditions occurs because of some metabolic
products, which increase the coronary blood
flow by vasodilatation.
Reactive Hyperemia
• Reactive hyperemia is the increase in blood
flow due to the vasodilator effects of
metabolites.
18. Metabolic Products which Increase the Coronary Blood
Flow
Adenosine
• Adenosine is a potent vasodilator and it increases the
blood flow to cardiac muscle. During hypoxia, ATP in
the muscle is degraded in large amount, forming ADP.
Some ADP molecules are further degraded into
adenosine, which is released into tissue fluids of heart
muscle.
• Other substances Other substances which increase the
coronary blood flow by vasodilatation are:
i. Potassium
ii. Hydrogen
iii. Carbon dioxide
iv. Adenosine phosphate compounds.
19. 3. CORONARY PERFUSION PRESSURE
• Perfusion pressure is the balance between
mean arterial pressure and venous pressure.
• Thus, coronary perfusion pressure is the
balance between mean arterial pressure in
aorta and the right atrial pressure.
• Since right aterial pressure is low, the mean
arterial pressure becomes the major factor
that maintains the coronary blood flow.
20. 4. NERVOUS FACTORS
• Coronary blood vessels are innervated both by
parasympathetic and sympathetic divisions of
autonomic nervous system.
• It is not known whether the autonomic nerves
have direct effect on blood flow in various
conditions.
• However, these nerves influence the coronary
blood flow indirectly by acting on the
musculature of heart.
21. • For example, stimulation of sympathetic
nerves increases the rate and force of
contraction of heart.
• This in turn, causes liberation of more
metabolites which dilate the blood vessels
and increase the coronary blood flow.
• Similarly, when parasympathetic nerves are
stimulated, the cardiac functions are inhibited
and the production of metabolites is less.
Coronary blood flow decreases.