Cardiovascular-Physiology

Question 1

Equation for CO (Fick principle)

Answer 1

CO=rate of O2 consumption/(arterial O2 content-venous O2 content)

Question 2

Equation for MAP

Answer 2

MAP=TPR*CO or MAP=2/3 diastolic pressure + 1/3 systolic pressure

Question 3

Equation for pulse pressure

Answer 3

pulse pressure=systolic pressure-diastolic pressure

Question 4

Pulse pressure is ____ to SV, and ______ to arterial compliance

Answer 4

proportional, inversely proportional

Question 5

Equation for SV

Answer 5

SV=EDV-ESV

Question 6

SV is ______ to contractility

Answer 6

proportional

Question 7

EF is _____ in systolic heart failure; EF is ____ in diastolic heart failure

Answer 7

Decreased, normal

Question 8

What class of drugs decrease prEload?

Answer 8

vEnodilators (nitroglycerin)

Question 9

What class of drugs decrease Afterload (arterial)?

Answer 9

HydrAlazine (vAsodilators)

Question 10

Resistance is equal to

Answer 10

delta P (driving pressure)/Q (flow), (8n(viscosity)*length)/(pir^4)

Question 11

Resistance of vessels in series

Answer 11

TR=R1+R2+R3

Question 12

Resistance of vessels in parallel

Answer 12

1/TR=1/R1+1/R2+1/R3…

Question 13

Viscosity is most related to what…

Answer 13

hematocrit

Question 14

What accounts for most of TPR?

Answer 14

arterioles