The cardiac cycle consists of seven phases that represent systole and diastole. Phase 1 involves atrial contraction which forces blood into the ventricles. Phase 2 is isovolumetric contraction where ventricular pressure builds with valves closed. Phase 3 is rapid ejection where pressure exceeds thresholds to open valves and eject blood. Phase 4 is reduced ejection as pressures fall. Phase 5 is isovolumetric relaxation with valves closed. Phases 6 and 7 involve rapid and reduced passive ventricular filling through open mitral valves.
This presentation describes the normal cardiac cycle referred to pressure-time curves for aorta, the left ventricle and left atrium, the electrocardiogram and the phonocardiogram.
single cardiac cycle includes all of the events associated with one
heartbeat. Thus, a cardiac cycle consists of systole and diastole of the
atria plus systole and diastole of the ventricles.
Describe events in cardiac cycle.
Describe atrial, ventricular and aortic pressure changes during cardiac cycle.
Describe the changes in ventricular volume & stroke volume during cardiac cycle.
Relate ECG changes to the phases of cardiac cycle.
Describe the functions of cardiac valves and relate their state to the production of heart sounds during cardiac cycle.
med_students0
CARDIAC CYCLE, ECG AND HEART SOUNDS.pptxthiru murugan
CARDIAC CYCLE, ECG AND HEART SOUNDS: BY Wincy Thirumurugan..
“Cardiac cycle refers to the series of events that take place when the heart beats.”
Each cycle is initiated by spontaneous contraction in the SA node and then transmit through the A-V bundle and branches into the ventricles results completion of one cycle.
EVENTS OR PHASES OF CARDIAC CYCLE: Diastolic phase (Diastole) in this phase the heart chamber are in the state of relaxation and fills with blood that receives from the veins [IVC, SVC,PULMONARY VEINS]
Systolic phase (Systole) in this the heart chambers are contracting and pumps the blood towards the periphery via the arteries. [ Pulmonary artery and aorta]
PHASES OF THE CARDIAC CYCLE
The different phases of the cardiac cycle involve:
Atrial diastole - Atrial relaxation
Atrial systole -Atrial contraction
Isovolumic relaxation -ventricular relaxation in the early phase but blood will not move and the Atrio ventricular valves will be closed
Ventricular filling - ventricular relaxation, the Atrio ventricular valves will be open allows filling blood in the ventricles
Isovolumic contraction of ventricle – ventricular systole in the early phase but no movement of the blood. The semilunar valves will be closed.
Ventricular ejection -ventricular contraction and send blood out of the ventricles through opened semilunar valves.
6. Ventricular Filling Stage: second phase. Rapid Filling, Slow Filling & Last Rapid Filling Duration of Cardiac Cycle:
In a normal person, a heartbeat is 72 beats/minute.
An Electrocardiogram (ECG) is a medical test that detects cardiac (heart) abnormalities by measuring the electrical activity generated by the heart as it. The machine that records the patient’s ECG is called an electrocardiograph.
contracts.
PLACEMENT OF ECG LEADS
ECG WAVES:
The P wave is caused by spread of depolarization through the atria, After the onset of the P wave, The QRS waves Occurs as a result of electrical depolarization of the ventricles, the ventricular T wave represents the stage of repolarization of the ventricles, The 'U' wave is a wave comes after the T wave of ventricular repolarization and may not always be observed.
HEART SOUNDS: First Heart Sound (S1)
The first heart sound results from the closing of the mitral and tricuspid valves. Second Heart Sound (S2): The second heart sound is produced by the closure of the aortic and pulmonic valves. Third Heart Sound (S3):
The third heart sound, also known as the “ventricular gallop,” occurs just after S2 when the mitral valve opens, allowing passive filling of the left ventricle. The S3 sound is actually produced by the large amount of blood striking a very compliant LV.
[Compliance heart means how easily the chamber of heart or the lumen of blood vessels expands when it is filling with the blood]
Fourth Heart Sound (S4):
The fourth heart sound, also known as the “atrial gallop,” occurs just before S1 when the atria contract to force blood into the LV.
This presentation describes the normal cardiac cycle referred to pressure-time curves for aorta, the left ventricle and left atrium, the electrocardiogram and the phonocardiogram.
single cardiac cycle includes all of the events associated with one
heartbeat. Thus, a cardiac cycle consists of systole and diastole of the
atria plus systole and diastole of the ventricles.
Describe events in cardiac cycle.
Describe atrial, ventricular and aortic pressure changes during cardiac cycle.
Describe the changes in ventricular volume & stroke volume during cardiac cycle.
Relate ECG changes to the phases of cardiac cycle.
Describe the functions of cardiac valves and relate their state to the production of heart sounds during cardiac cycle.
med_students0
CARDIAC CYCLE, ECG AND HEART SOUNDS.pptxthiru murugan
CARDIAC CYCLE, ECG AND HEART SOUNDS: BY Wincy Thirumurugan..
“Cardiac cycle refers to the series of events that take place when the heart beats.”
Each cycle is initiated by spontaneous contraction in the SA node and then transmit through the A-V bundle and branches into the ventricles results completion of one cycle.
EVENTS OR PHASES OF CARDIAC CYCLE: Diastolic phase (Diastole) in this phase the heart chamber are in the state of relaxation and fills with blood that receives from the veins [IVC, SVC,PULMONARY VEINS]
Systolic phase (Systole) in this the heart chambers are contracting and pumps the blood towards the periphery via the arteries. [ Pulmonary artery and aorta]
PHASES OF THE CARDIAC CYCLE
The different phases of the cardiac cycle involve:
Atrial diastole - Atrial relaxation
Atrial systole -Atrial contraction
Isovolumic relaxation -ventricular relaxation in the early phase but blood will not move and the Atrio ventricular valves will be closed
Ventricular filling - ventricular relaxation, the Atrio ventricular valves will be open allows filling blood in the ventricles
Isovolumic contraction of ventricle – ventricular systole in the early phase but no movement of the blood. The semilunar valves will be closed.
Ventricular ejection -ventricular contraction and send blood out of the ventricles through opened semilunar valves.
6. Ventricular Filling Stage: second phase. Rapid Filling, Slow Filling & Last Rapid Filling Duration of Cardiac Cycle:
In a normal person, a heartbeat is 72 beats/minute.
An Electrocardiogram (ECG) is a medical test that detects cardiac (heart) abnormalities by measuring the electrical activity generated by the heart as it. The machine that records the patient’s ECG is called an electrocardiograph.
contracts.
PLACEMENT OF ECG LEADS
ECG WAVES:
The P wave is caused by spread of depolarization through the atria, After the onset of the P wave, The QRS waves Occurs as a result of electrical depolarization of the ventricles, the ventricular T wave represents the stage of repolarization of the ventricles, The 'U' wave is a wave comes after the T wave of ventricular repolarization and may not always be observed.
HEART SOUNDS: First Heart Sound (S1)
The first heart sound results from the closing of the mitral and tricuspid valves. Second Heart Sound (S2): The second heart sound is produced by the closure of the aortic and pulmonic valves. Third Heart Sound (S3):
The third heart sound, also known as the “ventricular gallop,” occurs just after S2 when the mitral valve opens, allowing passive filling of the left ventricle. The S3 sound is actually produced by the large amount of blood striking a very compliant LV.
[Compliance heart means how easily the chamber of heart or the lumen of blood vessels expands when it is filling with the blood]
Fourth Heart Sound (S4):
The fourth heart sound, also known as the “atrial gallop,” occurs just before S1 when the atria contract to force blood into the LV.
The electrocardiogram (EKG) below the diagram shows the corresponding waves with each phase of the cardiac cycle. The bottom line represents the first and second heart sounds. The cardiac cycle represents the hemodynamic and electric changes that occur in systole and diastole. It has many phases.
Medical science of cardiovascular system. It is the importance system in the human body. Blood is a specialised fruit can keep tissue which is circulated by cardiovascular system. Other system are respiratory system nervous system, gastrointestinal system . But cardiovascular system is the important system in our human body. Which involved heart
Cardiac cycle and how the different chambers of the heart fill. We talk about the ventricular fillings and how diastole and systole work.
How pressure changes during all cycles
The electrocardiogram (EKG) below the diagram shows the corresponding waves with each phase of the cardiac cycle. The bottom line represents the first and second heart sounds. The cardiac cycle represents the hemodynamic and electric changes that occur in systole and diastole. It has many phases.
Medical science of cardiovascular system. It is the importance system in the human body. Blood is a specialised fruit can keep tissue which is circulated by cardiovascular system. Other system are respiratory system nervous system, gastrointestinal system . But cardiovascular system is the important system in our human body. Which involved heart
Cardiac cycle and how the different chambers of the heart fill. We talk about the ventricular fillings and how diastole and systole work.
How pressure changes during all cycles
Chatty Kathy - UNC Bootcamp Final Project Presentation - Final Version - 5.23...John Andrews
SlideShare Description for "Chatty Kathy - UNC Bootcamp Final Project Presentation"
Title: Chatty Kathy: Enhancing Physical Activity Among Older Adults
Description:
Discover how Chatty Kathy, an innovative project developed at the UNC Bootcamp, aims to tackle the challenge of low physical activity among older adults. Our AI-driven solution uses peer interaction to boost and sustain exercise levels, significantly improving health outcomes. This presentation covers our problem statement, the rationale behind Chatty Kathy, synthetic data and persona creation, model performance metrics, a visual demonstration of the project, and potential future developments. Join us for an insightful Q&A session to explore the potential of this groundbreaking project.
Project Team: Jay Requarth, Jana Avery, John Andrews, Dr. Dick Davis II, Nee Buntoum, Nam Yeongjin & Mat Nicholas
Explore our comprehensive data analysis project presentation on predicting product ad campaign performance. Learn how data-driven insights can optimize your marketing strategies and enhance campaign effectiveness. Perfect for professionals and students looking to understand the power of data analysis in advertising. for more details visit: https://bostoninstituteofanalytics.org/data-science-and-artificial-intelligence/
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Empowering the Data Analytics Ecosystem: A Laser Focus on Value
The data analytics ecosystem thrives when every component functions at its peak, unlocking the true potential of data. Here's a laser focus on key areas for an empowered ecosystem:
1. Democratize Access, Not Data:
Granular Access Controls: Provide users with self-service tools tailored to their specific needs, preventing data overload and misuse.
Data Catalogs: Implement robust data catalogs for easy discovery and understanding of available data sources.
2. Foster Collaboration with Clear Roles:
Data Mesh Architecture: Break down data silos by creating a distributed data ownership model with clear ownership and responsibilities.
Collaborative Workspaces: Utilize interactive platforms where data scientists, analysts, and domain experts can work seamlessly together.
3. Leverage Advanced Analytics Strategically:
AI-powered Automation: Automate repetitive tasks like data cleaning and feature engineering, freeing up data talent for higher-level analysis.
Right-Tool Selection: Strategically choose the most effective advanced analytics techniques (e.g., AI, ML) based on specific business problems.
4. Prioritize Data Quality with Automation:
Automated Data Validation: Implement automated data quality checks to identify and rectify errors at the source, minimizing downstream issues.
Data Lineage Tracking: Track the flow of data throughout the ecosystem, ensuring transparency and facilitating root cause analysis for errors.
5. Cultivate a Data-Driven Mindset:
Metrics-Driven Performance Management: Align KPIs and performance metrics with data-driven insights to ensure actionable decision making.
Data Storytelling Workshops: Equip stakeholders with the skills to translate complex data findings into compelling narratives that drive action.
Benefits of a Precise Ecosystem:
Sharpened Focus: Precise access and clear roles ensure everyone works with the most relevant data, maximizing efficiency.
Actionable Insights: Strategic analytics and automated quality checks lead to more reliable and actionable data insights.
Continuous Improvement: Data-driven performance management fosters a culture of learning and continuous improvement.
Sustainable Growth: Empowered by data, organizations can make informed decisions to drive sustainable growth and innovation.
By focusing on these precise actions, organizations can create an empowered data analytics ecosystem that delivers real value by driving data-driven decisions and maximizing the return on their data investment.
Adjusting primitives for graph : SHORT REPORT / NOTESSubhajit Sahu
Graph algorithms, like PageRank Compressed Sparse Row (CSR) is an adjacency-list based graph representation that is
Multiply with different modes (map)
1. Performance of sequential execution based vs OpenMP based vector multiply.
2. Comparing various launch configs for CUDA based vector multiply.
Sum with different storage types (reduce)
1. Performance of vector element sum using float vs bfloat16 as the storage type.
Sum with different modes (reduce)
1. Performance of sequential execution based vs OpenMP based vector element sum.
2. Performance of memcpy vs in-place based CUDA based vector element sum.
3. Comparing various launch configs for CUDA based vector element sum (memcpy).
4. Comparing various launch configs for CUDA based vector element sum (in-place).
Sum with in-place strategies of CUDA mode (reduce)
1. Comparing various launch configs for CUDA based vector element sum (in-place).
2. CARDIACCYCLE
A single cycle of cardiac activity can be divided into two basic phases:
Diastole (Represents the period of time when the ventricles are relaxed).
Systole (Represents the time during which the left and right ventricles contract
and eject blood into the aorta and pulmonary artery).
The cardiac cycle is usually divided into seven phases:
Phase 1 - Atrial Contraction
Phase 2 - Isovolumetric Contraction
Phase 3 - Rapid Ejection
Phase 4 - Reduced Ejection
Phase 5 - Isovolumetric Relaxation
Phase 6 - Rapid Filling
Phase 7 - Reduced Filling
4. 1- ATRIALCONTRACTION
It is initiated by the P wave (Depolarization of the atria).
As the atria contract the pressure in atria increases which forces more
blood flow across the open atrioventricular (AV) valves leading to a rapid
flow of blood into the ventricles.
Atrial contraction produce a small increase in AP which represent as "a-
wave"
Atrial contraction (fourth heart sound, S4).
5. 2- ISOVOLUMETRICCONTRACTION
All valves are closed (Allow ventricle build pressure) Mitral valve will bulge back
(C wave) build pressure in the ventricles (should exceed 80 mmhg).
This phase represented in ECG as QRS wave (Ventricular depolarization).
Closure of the AV valves results in the first heart sound (S1).
6. 3- RAPIDANDSLOWEJECTION
PHASES.
Ventricular pressure exceed (80 mmhg) Aortic and Pulmonic Valves Open rapid
ejection.
A and P Valves Open; AV Valves Remain Closed (blood filling in the atrium but
still closed).
After200 msec ventricular pressure start falling down + aortic pressure falling down
slow ejection.
No heart sounds are ordinarily noted during ejection.
7. 4- ISOVOLUMICRELAXATION
T wave represent the repolarization of ventricles there will be falling of
ventricular pressure A and P valves closed (make S2).
Left atrial pressure (LAP) continues to rise because of venous return from the
lungs. The peak LAP at the end of this phase is termed the v-wave.
8. 5- RAPIDANDSLOWPASSIVE
VENTRICULARFILLING
The mitral valve is open the blood fill the ventricle without atrial contraction we
get ventricular filling the blood come back from the body and lungs cause
ventricular filling.
The volume increases until the p wave occur and the next cycle start
Ventricular filling is normally silent. When a third heart sound (S3)??
9.
10. SUMMARY
Cardiac cycle is single cycle that represent systole and
diastole.
The cardiac cycle is usually divided into seven
phases:
Phase 1 - Atrial Contraction
Phase 2 - Isovolumetric Contraction
Phase 3 - Rapid Ejection
Phase 4 - Reduced Ejection
Phase 5 - Isovolumetric Relaxation
Phase 6 - Rapid Filling
Phase 7 - Reduced Filling