Objectives: Hydronephrosis is a common problem of renal disease in neonates, and it is shown that ureteropelvic junction obstruction (UPJO) is the most common cause of hydronephrosis. Several therapeutic surgical approaches have been introduced among which pyeloplasty have some advantages. In this study, the effciency of this technique was studied on 30 patients with UPJO.

Materials and Methods: In this prospective clinical trial, 30 patients with UPJO who had undergone pyeloplasty during 2013 to 2017 were studied and the intraoperative and postoperative complications, as well as the success of the operation, were evaluated.

Results: In this study, 30 patients with UPJO participated. Their mean age was 24.76 ± 13.95. The results of this study showed that none of the patients needed blood transfusion, and 28 patients responded well to surgery while 2 patients had postoperative complications such as pain and urinary tract infection at the end of follow-up.

Conclusions: The results of this study indicated that since the operation time, recovery, and duration of hospital stay, in addition to postoperative complications such as blood loss, and the need for blood transfusion were reduced in pyeloplasty method, this surgical method can be considered as the method of choice for both surgeons and patients for the treatment of hydronephrosis.