Hemodynamics

Question 1

Mean Arterial Pressure

Answer 1

MAP = CO * SVR

Where CO = HR * SV

Question 2

Systemic Vascular Resistance

Answer 2

SVR = (Mean Arterial Pressure - Right Atrial Pressure) / CO * 80

Question 3

Pulmonary Vascular Resistance

Answer 3

PVR = (Pulmonary Arterial Pressure - Left Atrial Pressure)/ CO * 80

Question 4

Which is higher, SVR or PVR?

Answer 4

SVR
Systemic Vascular Resistance = 900-1400 dynes-s/cm^5
Pulmonary Vascular Resistance = 40-120 dynes-s/cm^5

Question 5

Pulse Pressure

Answer 5

PP = Systolic - Diastolic

Question 6

Mean Arterial Pressure

Answer 6

MAP = Diastolic + 1/3* (Systolic - Diastolic)

Question 7

Aortic Compliance

Answer 7

Ability of hollow organ to distend and increase volume with increasing pressure
Aortic Compliance = Stroke Volume / Pulse Pressure

Question 8

Resistance per capillary is _______ but large number of capillaries make total resistance ______

Answer 8

Individual capillary resistance is HIGH

total capillary resistance is LOW due to large amount of them