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Old 09-30-2011
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Default confused in pulomary capillary wedge pressure

hello guys.....i m little bit confused in pulmonary capiillary wedge pressure....but i cant understand why it is low in hypovolemic shock & why not in cardiogenic shock?.....help me guys....thnks.........
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Old 09-30-2011
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Default according to me..

as far as i understand..
firstly, pulmonary capillary pressure is an indirect measure of Left atrial pressure. so you can assume both to be same..
now in hypovolemic shock, volume is low.. so pressures throughout body are low though the body compensates but we do expect hypotension.. so left atrial pressure is low..
in cardiogenic shock.. its generally a Left ventricular failure..
so although the systemic circulation will have low pressure as the heart cant pump blood out but at the same time the pulmonary circulation and the left atria will have increased pressure due to backflow.. hence the raised pulmonary capillary wedge pressure.

this is accord to my knowledge..
please let me know if i am wrong
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The above post was thanked by:
Cairo (09-30-2011), gaurav123 (09-30-2011), mitsua (07-11-2012), nakeya52 (08-19-2013)
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Old 09-30-2011
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Default thnks

well i was thinking the same but i dnt knw the exact reason....but this makes sense....so this is good to keep in mind............thanks dude
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