04-12-2011, 09:52 AM
Hmm...I don't really know and I'm stuck between 2 possibilities:
1) either the extra blood from previous cycle would delay A2 sound making A2 and P2 closer together in inspiration and get a split of A2 and P2 during expiration (like that presented in the question)
2) Because theres more blood coming in LV, rapid decrease in pressure will cause A2 to occur before P2 and so there will be a wider split during inspiration and less during expiration.
1) either the extra blood from previous cycle would delay A2 sound making A2 and P2 closer together in inspiration and get a split of A2 and P2 during expiration (like that presented in the question)
2) Because theres more blood coming in LV, rapid decrease in pressure will cause A2 to occur before P2 and so there will be a wider split during inspiration and less during expiration.