cardiac performance Flashcards
1
Q
What is the equation for cardiac performance?
A
Q(rate) = F(h) X SV(h)
2
Q
What does Q rate mean?
A
- cardiac output (mL/min)
3
Q
What does f(h) mean?
A
- heart rate (beats/min)
- frequency
4
Q
What does SV(h) mean
A
- stroke volume (mL/beat)
- volume ventricle expels during contraction
5
Q
What does chronotropic effects mean?
A
- changing heartrate over time
6
Q
What is a positive chronotropic effect?
A
- tachycardia
7
Q
What is a negative chronotropic effect?
A
- bradycardia
8
Q
What does inotropic effects mean?
A
- changing SV(h) force
9
Q
What does it mean when inotropic effects are positive?
A
- greater SV(h)
10
Q
What does it mean when inotropic effects are negative?
A
- lower SV(h)
