Cardiac physio equations Flashcards
1
Q
What is Ohm’s law?
A
I = V/R = Current = Voltage/Resistance
2
Q
What is pressure equal to?
A
Resistance X Flow
3
Q
What is the equation for SVR?
A
MAP-CVP/CO X 80
4
Q
What are the units of SVR?
A
dynes X sec X cm-5
5
Q
What is the equation for CPP?
A
AoDP-LVEDP
6
Q
What is the equation for resistance in blood vessels?
A
R = 8nL/r4
7
Q
What is the equation for PulmVR?
A
Pulm. Art. Pressure - LAP/CO X 80
8
Q
What is the equation for compliance?
A
Volume/pressure
9
Q
What is the equation for MAP?
A
(SBP +2DBP)/3
10
Q
What is another equation for MAP?
A
DBP + 1/3 PP
11
Q
What is the equation for CO?
A
SV X HR
12
Q
What is the equation for cardiac index?
A
CO/Body SA
13
Q
What is the equation for EF?
A
SV/EDV
14
Q
What is the equation for SvO2?
A
SaO2 - (VO2/CO X Hb X 1.34)