Does the heart failure shift the venous return curve to the right or not?? - USMLE Forums
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Old 06-06-2013
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Wink Does the heart failure shift the venous return curve to the right or not??

Hey guys,
I just wanna know if the heart failure shift the venous return curve to the right or not ?? because in kaplan qbank one of the questions says in its explanation that HF shifts it to the right while FA shows that only cardiac output curve shifts down while venous return stays the same, so can you help me with that.
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Old 06-07-2013
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there will be a decrease in cardiac output because the heart is not able to pump that much blood since it is failing, the venous return remains the same because i think initially there will be sympathetic stimulation that will cause alpha one on blood vessels to cause vasoconstriction so as to maintain venous return, also with a failing heart the RAAS system sets in and remember angiotensin 11 is a potent vasoconstrictor...I hope this helps u and please check with others, i don't know am 100% sure but this is just my logical thinking
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