Cardiovascular Equations

Question 1

Normal cardiac index

Answer 1

3.5-5.5 L/min/m2

CI=CO/BSA

Question 2

MAP

Answer 2

MAP = Diastolic pressure + 1/3 Pulse pressure

Question 3

Fick method of CO

Answer 3

CO = VO2/(CAoO2-CraO2)

CAoO2 = aortic o2 content
CraO2 = right atrial o2 content

Question 4

Fick equation for Qp:Qs

Answer 4

(Ao -SVC)/(PV - PA) = Qp:Qs

Oxygen content of:
Ao - aorta
SVC - superior vena cava
PV - pulmonary vein
PA - pulmonary artery