Central Venous Pressure

Question 1

If CO does not equal VR than what mechanism corrects the discrepancy?

Answer 1

Central venous compartment volume

Question 2

What components are considered part of the Central venous compartment?

Answer 2

R atrium and great veins of the thorax

Question 3

If there is a small change in pressure in the body what is the effect on the Ventricular EDV?

Answer 3

Changes alot

Question 4

How can one estimate Central Venous Pressure noninvasively?

Answer 4

Note fullness of a pt’s jugular

Question 5

What are some things that influence peripheral venous pressure?

Answer 5

change in volume leads to increase in pressure
change in vasoconstriction leads to increase in pressure
external compression of veins by muscles

Question 6

If one has an abnormally low Central venous pressure what could be a plausible explanation?

Answer 6

increase in cardiac function (CVP vs. venous return)
left-shifted venous function(cardiac filling pressure vs. CO)
or a combo of both