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patho 2 chf

Cardiac failure can be expressed by 2 things reduced CO and increased blood volume in the veins beyond the left or right heart
Acute cardiac failure damage to myocard. dec CO+^venous BV=> ^RAP=>dec.CO dec.BP+PO2=>symp reflexes^contractility+venous return(30sec)
Chronic Cardiac failure(compensated) ^retention of fluids by the kidney, prog. recovery of the heart musc. heart compensates for dec. CO & meets the bodies needs. no symptoms unless exercise
decompensated HF severely damaged no comp. can fix.fluid retention maintained inc. edema. Heart can't pump suf. blood to make kidneys fx adeqately
symptoms of dec.HF retention of fluid=>^mean sys filling pressure=>^RAP=>overstretched edematous heart can't pump=>pulm edema
R heart failure sys. cong, hepatomegaly, ascites, cyanosis, pedal edema, dec. RH o/p dec. pulm circ dec.LH output
L heart failure ^LA+pulm pres.=>pulm congestion=>^RH output dec. LH output=>pulm edema
Created by: Jennifer Birne Jennifer Birne on 2010-06-18

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