Feasibility, in terms of efficacy and safety, of video-assisted pyeloplasty (OTAP) in the first 90 days of life

Introduction The uretero-pelvic junction (UPJ) is the most common site of obstruction in the pediatric upper urinary tract, causing hydronephrosis. In our institution, the gold standard approach for hydronephrosis in infants is the One-Trocar-Assisted Pyeloplasty (OTAP). The aim of this study is to evaluate the feasibility of OTAP in terms of efficacy and safety in the first 90 days of life. Methods We retrospectively reviewed all charts and long-term follow-up of 138 infants treated with OTAP; we selected and examined the ones with a defined diagnosis of severe UJPO and, thus, treated in the first 90 days of life: 28 patients. Indications for early surgery were: antero-posterior pelvic diameter (APD) > 20 mm and an obstructive pattern on renography; impaired echotexture and/or relative renal function < 40% had to be associated. Results Out of 23 patients, we witnessed one conversion to open surgery (4.35%) and one recurrence (4.35%) of UPJO. The mean pre-surgery APD was 35.2 mm, while the mean post-surgery APD was 17.32 mm. The mean operative time was 133 min. The mean hospitalization time was 7.71 days. The mean average of follow-up was 46.41 months (minimum 1 year). Conclusions Our experience suggests that OTAP is a valid and feasible technique in terms of safety and efficacy for the early treatment of very young infants affected by UPJO.