[Changes in renal function during and after unilateral ureteral obstruction (author's transl)].

The contribution of the obstructed kidney to the total renal blood flow (RBF) and the clearances of 51Cr-EDTA and 125-I-IOH was measured during unilateral ureteral obstruction. It was shown that the decrease of the clearances, depending on functional processes like filtration and secretion, was much faster than the decrease in the RBF. The recovery potential of the obstructed kidney was determined after a reversible temporary ureteral obstruction of up to three weeks duration. It was shown that the recovery of the glomerular filtration rate depended upon the duration of the obstruction. It was independent of the presence of the intact contralateral kidney.