Late Results After Surgical Correction of Pyeloplasty Failure in Idiopathic Hydronephrosis

Abstract

Late results after a secondary pyleoplasty because of failure of the initial procedure were evaluated by glomerular filtration rate and drainage function studies in 15 patients. Total and separate glomerular filtration rates were measured using the 51Cr-ethylenediaminetetraacetic acid clearance technique and isotope renography. The drainage function of the renal pelvis was evaluated from the isotope renogram. Secondary pyleoplasty was performed 1-15 yr (mean 8.0 yr) after the first procedure because of the obstruction, which was verified by diuretic urography and isotope renography. A secondary pyleoplasty may be performed after failure of the primary procedure. Functional results 3-15 yr after reoperation were equally good as after uncomplicated primary pyeloplasty.