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patho 2 chf
Question | Answer |
---|---|
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 |