why aortic regurgitation increases PP?

[BornDJnowDoc]

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anyone can explain?

 

[OneStepAhead]

Pulse pressure = SBP-DBP
In AR some blood is regurgitated back into the left ventricle during diastole this leads to an increase in end diastolic volume in the left ventricle which --------> Frank starling mechanism-------> increase force of contraction--------> increase ejection fraction or stroke volume.

 

[Merely]

^finishing his point increasing stroke volume will increase systolic bp, moreover since blood is regurgitating back there will be less blood going to the circulation resulting in a decreased diastolic as well so increase systolic and decrease diastolic widens the pp, anyone feel free to correct me tho

 

[Beezlebub]

^finishing his point increasing stroke volume will increase systolic bp, moreover since blood is regurgitating back there will be less blood going to the circulation resulting in a decreased diastolic as well so increase systolic and decrease diastolic widens the pp, anyone feel free to correct me tho

"Less blood going to the circulation" - Frank Starling Law compensates for that by increasing contractile forces when SV/EDV are increased as in cases of AR, or other circumstances involving volume overload. It makes sense intuitively, b/c if less blood is going to the systemic circulation, it would place the body at risk for decreased blood perfusion -> dec O2 diffusion -> tissue necrosis -> organ failure -> death.