NEET PG DENTAL EXAM

Detailed explanation-1: -Oliguria is defined as urinary output less than 400 ml per day or less than 20 ml per hour and is one of the earliest signs of impaired renal function.[1] It had been described early in the literature when Hippocrates identified the prognostic importance of the urinary output.

Detailed explanation-2: -Oliguria is defined as a urine output that is less than 1 mL/kg/h in infants, less than 0.5 mL/kg/h in children, and less than 400 mL daily in adults.

Detailed explanation-3: -Categories of causes of oliguria include decreased renal blood flow, renal insufficiency, and urinary outflow obstruction.