haemodynamics Flashcards
1
Q
how much blood is in the venous system
A
> 50%
2
Q
what is ejection fraction
A
stroke vol/end diastolic vol
3
Q
what is normal ejection fraction
A
> 50%
4
Q
what increases contractility
A
Ca2+ availability
5
Q
what is preload
A
pretty much the same as end diastolic vol
6
Q
what is end diastolic vol
A
how much blood in heart before valves open in systole
7
Q
what is afterload
A
aortic pressure/systemic vascular resistance
8
Q
when would preload go up?
A
exercise
