PSL301H1 Lecture Notes - Pr Interval, Heart Sounds
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PSL301H1 Full Course Notes
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Document Summary
Cardiac cycle (cid:131) the period from the beginning of one heartbeat to the. 0. 18s (0. 12-0. 20s) atrial depolarization and conduction through the av node. Wigger"s diagram (cid:131) shows the relation between the ecg, heart sound, and pressure and volume changes in the left side of the heart and aorta. Onset of ventricular relaxation closure of semilunar valves. Termination of atrial and onset of ventricular contraction. During: during late ventricular diastole, sa node fires again and the cardiac cycle starts over. Protodiastole beginning of ventricular relaxation, a difficult point to identify. Diastasis (reduced filling) slowing of inflow from atria to. Onset of ventricular contraction closure of av valve rapid rise of intraventricular pressure. Onset of ventricular relaxation rapid drop in intraventricular pressure. Rapid flow of blood from atria to ventricles. Abnormalities (cid:131) tachycardia a rapid heart rate more than 100 beats/min (cid:131) bradycardia slow heart rate of less than 60 beats/min.
