Another physi. challenge for ya!

Discussion in 'Dental' started by rsweeney, Apr 8, 2004.

  1. rsweeney

    rsweeney Senior Member
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    Why does right atrial [central venous pressure] rise as left ventricular cardiac output falls?

    Also, with aortic stenosis and mitral regurgitation, since CVP rises as CO falls, then why does right ventricular end diastolic volume decrease? You would think that if you have a rise in CVP then MORE bood would enter the right ventricle thus increasing right ventricular end diastolic volume. But, when you review cases of mitral regurgitation and aortic stenosis, right ventricular end diastolic volume falls, yet the right atrial pressure is elevated!! Doesn't that seem a little paradoxial? If right atrial pressure is up then you would expect right ventricular end diastolic volume to keep going up as the condition worsens--aayyaya--maybe it's a flow thing. :rolleyes:

    This question is related to the previous aortic stenosis thread, but I figured this question is equally important:D

    -Another challenge for ya!

    -Y'all love me:love:

    -Richard
     

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