THE OUTCOME OF DOUBLE DARTOS VERSUS SINGLE LAYER FLAP IN SNODGRASS URETHROPLASTY FOR DISTAL HYPOSPADIAS REPAIR IN BASRA TRAINING CENTER OF UROLOGY

Abstract

Hypospadias, a nomination of medical term which was derived from the Greek terms: hypo (under) and spadon (rent, fissure). It is one of the congenital abnormalities of the genitourinary tract. There are about 400 different procedures described for correction of this type of anomaly, but Tubularized Incised Plate (TIP) Urethroplasty is considered the most popular one, and there are multiple variations in this procedure to get high success rate and decrease the complications. In this study, we compare between single layer dartos flap versus double layer dorsal flaps in TIP urethroplasty. This is to assess the outcomes of double dartos flaps versus single layer flap in TIP urethroplasty for primary distal hypospadias repair in Basrah Teaching Center regarding the success rate, and to investigate the importance of double flaps in preventing possible complications in particular, urethral fistula. A cross sectional prospective study was done in Basra Teaching Hospital, between January 2018 to March 2020. A total of 50 boys, 2 to 10 year- old with coronal and sub coronal primary Hypospadias were treated with TIP urethroplasty (Snodgrass procedure) by one surgical team, who were referred to Basrah Teaching Hospital from private and outpatient clinics. Patients were divided into 2 groups: (group I: 25 patients) single layer Dartos flap & (group II: 25 patients) double layers of Dartos flaps. Six patients were missing during follow up, coincidentally 3 patients in each group. The mean age was 4.55 and 4.86 year for groups I, II respectively, the mean operative time was 88.81 and 91.86 minutes for group I & group II respectively. The success rate was (81%) and (86%) for group I, II respectively, with exception of complications which need re-do surgery. Urethrocutaneous fistula (UF) was developed in (22.7%) in group I, and in (4.5%) in group II. Bleeding was happened in 2 cases (9.1%) in group I and 3 cases (13.6%) in group II. Meatal stenosis was diagnosed in (9.1%) in group I and (13.6%) in group II. Glans dehiscence was seen in 1 case (4.5%) for each group. There was a significant difference between the two groups in the occurrence of UF (P = 0.001). According to our evidence in this study, double dartos flaps is easy to be harvested, safe procedure, and represents very good choice for UF prevention. Although the number of complicated patients regarding bleeding and meatal stenosis are higher in group II than group I but they were statistically insignificant. Keywords: Hypospadias, Urethroplasty, Tubularized Incised Plate (TIP), urethral fistula, dartos flaps.