Which mechanism best explains the edema in nephrotic syndrome?
Answer and explanation
Correct answer: B. Decreased plasma oncotic pressure
- Step 1: Heavy protein loss in the urine lowers plasma albumin. Step 2. Lower oncotic pressure favours fluid leaving the capillaries. Answer: decreased plasma oncotic pressure. Why not the others: raised hydrostatic pressure explains heart failure edema, and obstructed lymph flow explains lymphedema.
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