Acute Urinary Tract Obstruction

Abstract

Th e kidneys are paired organs with the primary function of helping to remove toxins from the body and regulate water balance. Th ey are vital to survival. After urine is produced in the kidneys, it must pass into the bladder, where it can be stored before being eliminated from the body through the urethra. Urinary tract obstruction is a common problem encountered by urologists, primary care physicians, and emergency medicine physicians. Urine can become obstructed at any point in this pathway. Th ere are three groups of urinary tract obstructions: 1) obstruction of the urinary tract lumen; 2) obstruction of the urinary tract wall; and 3) extrinsic obstruction, which can press on the urinary tract lumen. An obstruction can be present from birth or develop later in life. Th e most common causes of obstruction include stones, strictures, tumours, and bladder dysfunction. Th ese obstructions may result in the hydronephrosis of one or both kidneys, which, if left untreated, may lead to the deterioration of renal function. Th e goal of an initial treatment of urinary tract obstruction is to remove the obstruction. Later, we treat the cause that led to the obstruction. Th e bottom line is that all eff orts should be made to preserve kidney function to avoid the need for dialysis or renal transplantation.