Cardiac cycle Flashcards
1
Q
When changing the cardiac cycle, what is affected more - diastole or systole?
A
Diastole (greater magnitude of change)
2
Q
What does the T wave correspond to on the ventricular pressure curve?
A
End of reduced ejection when aortic valve closes
3
Q
What creates the dicrotic notch (incisura) in the aortic pressure curve?
A
Backward pressure wave returning from periphery
4
Q
What is the equation for stroke volume?
A
LVEDV - LVESV
5
Q
When does physiological splitting of S2 occur?
A
- During inspiration 2. Delayed closure of pulmonic valve 3. Early closure of aortic valve
6
Q
What causes a 4th heart sound?
A
Increase in ventricular pressure at end of atrial systole
7
Q
When is a diastolic murmur heard?
A
After S2 and before S1
8
Q
When is a systolic murmur heard?
A
After S1 and before S2 - throughout systole
