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Good video. Please explain why MSP and RAP remain the same while CO either increases or decreases. For example look at RAP of 2. Driving pressure is the same but output is very different. My understanding is that when you increase TPR so much that flow increases dramatically on the arterial side and there is a net transfer of blood to venous side. Doesn't it increase MSP and RAP?

@medtutorberry

Жыл бұрын

Because RAP is more strongly dependent on venous return (that in turn is dependent on the compliance of the venous system).

@texastexas4541

Жыл бұрын

@@medtutorberry I am sorry you did not answer my question. At RAP of 2, driving pressure is the same but output is higher. How is that possible? Thanks in advance.

@medtutorberry

Жыл бұрын

@@texastexas4541 You said "My understanding is that when you increase TPR so much that flow increases dramatically on the arterial side and there is a net transfer of blood to venous side. Doesn't it increase MSP and RAP?". You're not wrong! When TPR goes up, the flow to capillaries and venous side also goes up. However, the veins are like reservoirs of blood. They can decide to hold onto that blood if they want (aka increase compliance), which can decrease how much blood goes to the heart (decreasing the venous return, thereby decreasing RAP).

@texastexas4541

Жыл бұрын

@@medtutorberry I would like it very much if you answered this question: At RAP of 2, driving pressure is the same but output is higher. How is that possible? Thanks in advance.

Why is RAP unaffected when arteriolar tone changes?

@medtutorberry

Жыл бұрын

Because RAP is more strongly dependent on venous return (that in turn is dependent on the compliance of the venous system).

I don't understand 💔💔

@medtutorberry

Жыл бұрын

I'm sorry! I'm sure there's plenty other videos on KZread that might help you understand this better.

@rmu1486

Жыл бұрын

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