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 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.
@@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).
@@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.
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Why is RAP unaffected when arteriolar tone changes?
Because RAP is more strongly dependent on venous return (that in turn is dependent on the compliance of the venous system).
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?
Because RAP is more strongly dependent on venous return (that in turn is dependent on the compliance of the venous system).
@@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.
@@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).
@@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.
I don't understand 💔💔
I'm sorry! I'm sure there's plenty other videos on UA-cam that might help you understand this better.
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