Prerenal, Renal, and Postrenal: Understanding Oliguria's Causes
Oliguria is a symptom, not a diagnosis—and identifying its cause is essential to treatment. Clinicians classify oliguria into three categories based on where the problem originates: prerenal (reduced blood flow to the kidneys), renal (intrinsic kidney damage), and postrenal (obstruction downstream of the kidney). Each category requires different management, and understanding these...
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