Post-obstructive diuresis.

Abstract

A patient with post-obstructive diuresis is described. Inappropriate losses of salt and water occurred, with urine volume exceeding half the glomerular filtration rate. Additionally, excessive urinary excretion of potassium, bicarbonate, calcium, phosphate, magnesium and urate took place in the presence of subnormal blood levels. Transient proteinuria was also observed. This case demonstrates that serious electrolyte disturbances can occur after relief of urinary tract obstruction and the evidence suggests these may be due to disordered proximal tubule function.