Explore the intricacies of the cardiac cycle in this comprehensive lecture on cardiology. Delve into the phases of systole and diastole, examining the events occurring in the left side of the heart. Learn about ventricular contraction, heart sounds, isovolumetric contraction and relaxation, and the various phases of ventricular ejection and filling. Understand the timing of systole and diastole, pressure changes in different chambers and vessels, and the graphical representation of the cardiac cycle. Gain insights into atrial contraction, progressive filling phases, and the correlation with ECG. Master the fundamental concepts of cardiovascular physiology through detailed explanations and visual aids.
Overview
Syllabus
Cardiac cycle definition
Events in left side of heart
Left atrium contraction
Ventricular contraction
First heart sound
Isovolumetric contraction
Rapid ventricular ejection
Slow ventricular ejection phase
Isovolumetric relaxation
Rapid passive ventricle filling phase
Slow passive ventricle filling/Diastases
Active atrial contraction
Durations of Systole and diastole
Heart sounds in different phases of cardiac cycle
Cardiac cycle in graphical fashion
Atrial contraction
Onset of ventricular contraction/S1
Rapid ejection phase
Slow ejection of ventricle
Isovolumetric relaxation/S2
Rapid passive ventricular filling and beginning of next cycle
Heart sounds in reference to Systole and diastole
Graphic representation of volume
Brief discussion on ECG
Taught by
Dr. Najeeb Lectures
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