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Old 11-07-2012
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Question Pulmonary Artery Hypertension and Split S2

is PAHTN cause of this ? it was mentioned in q and ans was PAHTN !

any thoughts ?

i was knowing ASD and VSD only...
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Old 11-07-2012
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Anything that increases the flow of blood towards the pulmonay vasculature OR delays pulmonic valve closure will caused a fixed split of S2, if murmur is present pick ASD, if not pick PRimay pulmonary hypertension
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Old 11-07-2012
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Originally Posted by XpaezX View Post
Anything that increases the flow of blood towards the pulmonay vasculature OR delays pulmonic valve closure will caused a fixed split of S2, if murmur is present pick ASD, if not pick PRimay pulmonary hypertension
delay in pulmonic valve closure will cause wide split S2. isnt ? P2 gets delayed..how come fixed split S2 ?
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Old 11-07-2012
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delay in pulmonic valve closure will cause wide split S2. isnt ? P2 gets delayed..how come fixed split S2 ?
The thing here is that a delayed fixed and wide split is almost pathognomonic of ASD along with a murmur..

The fixed split can be explained because either the same amount of increased preload is getting to the heart (ASD) in each heartbeat OR the RV has to increase the same amount of pressure each beat to overcome the Increased afterload (Pulmonary HYpertension)

I wouldnt bug down to much into it tyagee, just look for the presence of a murmur and other clues to give you the diagnosis and hence treatment.
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Old 11-07-2012
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Besides my man, Pulmonary Hypertension causes a narrow splitting of S2 and a loud P2, so thats another good point to differentiate.

ASD: Wide Splitting
PHTN: Narrow Splitting
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