THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Anuria, sometimes called anuresis, refers to the lack of urine production. This can happen as a result of conditions like shock, severe blood loss and failure of your heart or kidneys.

Detailed explanation-2: -Oliguria occurs when urine production is reduced dramatically, defined as a decrease in urine output to less than 500 mL per day or less than 0.5 ml/kg/hour. In contrast, anuria is the absence of urine production, defined as a urine output of fewer than 100 milliliters per day.

Detailed explanation-3: -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.