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Discussion Starter · #1 ·
can anyone pls explain wt is difference between compensated n un compensated coarctation of aorta...n also wt is difference bet blood flow,blood pressure n peripheral vascular resistance....in upper n lower body segment in both of this condition....:eek:
 

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Discussion Starter · #2 ·
step1an said:
Hi,

I myself have no grasp on this topic....:eek:

But have a look at these links .....

http://www.medscape.com/viewarticle/703899_4

http://emedicine.medscape.com/article/895502-overview

http://www.wikidoc.org/index.php/Aortic_coarctation

These may be of some help.........
hey thanks for reply....but i didnt find anything regarding compensated or uncompensated things....i saw only superficially though....
i came across 2 Qs in kaplan about the same thing n i was hardly able to understand wt they were trying to explain....
main thing m not getting is peripheral vascular resistance....
in compensated heart failure blood flow is equal in both upper n lower body parts...
P=QR so now we only hv to correlate between P n R....but they also mentioned characteristic pulse...like brisk or bounding..or wt ever....i dont remember much...
n we hv to answer from that whether PVR is raised or low.....
 

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Plz correct me if i am wrong.... My understanding is that in the segment before the CoA there is hypertension & decreased PVR.
And in the segment distal to CoA, PVR should increase to compensate for decreasing blood pressure.
 

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Discussion Starter · #4 ·
my understanding is different though....:D
compensated COA blood flow is equal in both upper n lower segment....
n blood pressure is already high in upper segment due to renin angiotensin system...so...if we go with P=QR.....
R=P/Q..
R is proportional to P....means there should be high resistance in upper part...in compensated....
but in uncompensated....Q is low in lower body....so according to R=P/Q....resistance will be high in lower body......but pressure is also low.....so cant say exactly....:eek:
actually they give us clue by giving characteristic of pulse...
like if pulse in upper part is brisk then there must be low resistance....:confused:
ughhhh......!! m getting more n more confused.....:confused:
i'll post that 2 Qs if i find them....:p
 

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Better you post them.............I WOULD LIKE TO ANSWER.

my understanding is different though....:D
compensated COA blood flow is equal in both upper n lower segment....
n blood pressure is already high in upper segment due to renin angiotensin system...so...if we go with P=QR.....
R=P/Q..
R is proportional to P....means there should be high resistance in upper part...in compensated....
but in uncompensated....Q is low in lower body....so according to R=P/Q....resistance will be high in lower body......but pressure is also low.....so cant say exactly....:eek:
actually they give us clue by giving characteristic of pulse...
like if pulse in upper part is brisk then there must be low resistance....:confused:
ughhhh......!! m getting more n more confused.....:confused:
i'll post that 2 Qs if i find them....:p
post those 2 questions,I would like to answer.......................:)
 
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