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Cardiac Cycle Brown

Directed study

P wave Atrial depolarization
a wave Atrial systole
QRS complex Ventricular depolarization
c wave Ventricular systole
v wave AV valve opens and ventricles fill
Isovolumic contraction Mitral and Aortic valve closed
When does the aortic valve open around 80mm Hg
S1 or "lub" AV valve closing
S2 or "dub" Aortic valve closing
The Mitral valve closes when The QRS complex has been initiated
The aortic valve opens When left ventricular pressure equals aortic pressure, when ventricular volume is at its max, during the c wave of atrial pressure, at the end of diastolic runoff of arterial pressure
The aortic valve closes At the start of S2, When ventricular myocytes all enter phase 3 of the action potential
The first heart sound, S1, is Vibrations from closing of mitral and tricuspid valves
The C wave of atrial pressure is Elevated when the mitral valve is leaky and because the left atrial filling and bulging of the mitral valve
Peak systolic pressure occurs Between aortic closing
Created by: mcasto