virgola82
Forum Guru
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The rapid infusion of 1 liter of plasma in the femoral vein will have which of the following effects?
A. Increase the end-diastolic reserve volume
B. Directly reduce teh firing rate of sinoatrial node
C. Increase the end-systolic volume
D. Increase pulse pressure
E. Decrease the end-systolic volume
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| usmle4me
Forum Elite
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Posts: 283
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A. end diastolic reserve volume
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| po
Forum Elite
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Posts: 356
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D. Increase pulse pressure ;
since rt atrial pressure increase->stretch->anf->vasodilation->decrease in diastolic pressure
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| Luckyall
Forum Guru
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Alrighty: the rapid infusion of femoral vein-----> incr Preload---->incr EDV----> incr SV at the expense of EDRV( excludes A)
The incr SV mainly affects SBP, with an incr SV---> incr PP
Answer D
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| virgola82
Forum Guru
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I think the explanation given by luckyall is clear enough. So right answer is increased pulse pressure; end-systolic volume is unchanged because the incerase in preload is compensated by increased stroke volume
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| monam84
Forum Senior
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I have to agree with D
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| lq2006
Forum Elite
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D
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