Lecture 27- Cardiac Output Flashcards
1
Q
On what is CO dependent?
A
venous return
Vascular resistance
2
Q
Is contractility load dependent?
A
No, independent
3
Q
What changes contractility
A
Activity
4
Q
What does inotrope measure?
A
Contractility
5
Q
Is a sinus arrhythmia vagally or sympathetically mediated?
A
Vagally
6
Q
What determines venous return?
A
Intravascular volume
Muscular venous pump
Venous tone
7
Q
Frank-starling principle is related to
A
venous return decreases CO
8
Q
Is more or less oxygen extracted in slowly circulating blood?
A
More
9
Q
What factors affect local distribution of cardiac output?
A
Local metabolism
Vasoconstriction
Sympathetic Beta2 activation of skeletal muscle
