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Old 12-24-2013
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Vascular Why increased Stroke Volume increases Pulse Pressure!

Increase stroke volume increases pulse pressure. HOW?
If SV is increased then blood pumped by the heart is increased so systolic BP should also increase.. As more blood is now present in aorta so stretch on aorta increases which increases diastolic BP also...so pulse pressure should be same.
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Old 12-24-2013
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Originally Posted by medicalbiology View Post
Increase stroke volume increases pulse pressure. HOW?
If SV is increased then blood pumped by the heart is increased so systolic BP should also increase.. As more blood is now present in aorta so stretch on aorta increases which increases diastolic BP also...so pulse pressure should be same.
SBP proportional to SV whilst DBP proportional to TPR,
If u increase SV without any change in TPR then obviously only SBP has increased and so PP should increase.
Your argument is right but how sure are u that the increase in SV causes same degree or amount of increase in TPR. So I think you shd not assume that.
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