In upper urinary tract obstruction, the kidney of affected side undergoes various degree of damage due to increased intraureteral pressure resulting in hydronephrosis. The evaluation of the functional changes and reversibility of and obstructed kidney...
In upper urinary tract obstruction, the kidney of affected side undergoes various degree of damage due to increased intraureteral pressure resulting in hydronephrosis. The evaluation of the functional changes and reversibility of and obstructed kidney is quite valuable in selection further treatment. Radioisotope renography, P.S.P test, and excretory urography were performed in 31 cases of upper urinary tract stone who were admitted to the Department of Urology, Woo Sok Hospital during the period of 1 year from Jan. 1st, 1971, to Dec. 31st, 1971 and these studies were repeated in 12 cases after the removal of urinary stone and the following results were obtained.
1) As to the location of stone, the more functional damage was noted in the stone located more proximally.
2) As to the duration of obstruction, the longer the period of time, the poorer the kidney function.
3) The radioisotope renogram may be able to provide the most accurate evaluation of kidney when used in combination with P.S.P. test and excretory urography.
4) In few weeks after the removal of stone, the improvement of 3rd segment of radioisotope renogram reflected most sensitively while there were no remarkable changes in P.S.P. test and I.V.P. study.