title: [Uroflowmetric review of pediatric distal urethroplasty].
abstract: BACKGROUND
  Urethral stricture is the most common complication in hypospadias surgery. The monitoring of operated patients allows rapid detection of this complication and the uroflowmetry is the main diagnostic method.
  
  
  OBJECTIVE
  To study of functional results in patients who underwent distal urethroplasty, using uroflowmetry.
  
  
  METHODS
  A retrospective chart review was conducted of 81 patients who underwent distal hypospadias repair (7 coronal, 51 subcoronal and 23 distal penile shaft) and a postoperatory uroflowmetric study. The patients were divided into two groups, in each type of hypospadias, according to the presence or absence of stenotic complications (0 coronal, 10 subcoronal and 5 distal penile shaft). The functional effects in both groups were studied.
  
  
  RESULTS
  All patients with stenotic complications showed maximum flow rates and mean flow rates below 15 and 20 percentiles respectively and a plateauing layout of the urinary flow curve. The treatment of these conditions resulted in the normalization of the maximum flow values ​​(in 100% of the subcoronal and 100% of the distal penile shaft hypospadias), as well as in the mean flow values ​​(in 88% of the subcoronal and 75% of the distal penile shaft hypospadias). The curve also adapted a bell-shaped in 100% of the H. coronal and 50% of the H. distal penile shaft. The uroflowmetry presented a spontaneous improvement in all patients without stenotic complications but with low flows in their first uroflowmetric.
  
  
  CONCLUSIONS
  Uroflowmetry is an objective method for the evaluation of hypospadias surgery, being easy to perform, noninvasive and reliable. Obstructed uroflow patterns point to the presence of a stenotic complication.
authors: Servicio de Cirugía Pediátrica. Hospital Universitario Central de Asturias. Oviedo.
authors: N
authors: N
authors: Vega Mata
authors: Servicio de Cirugía Pediátrica. Hospital Universitario Central de Asturias. Oviedo.
authors: C
authors: C
authors: Gutiérrez Segura
authors: Servicio de Cirugía Pediátrica. Hospital Universitario Central de Asturias. Oviedo.
authors: V
authors: V
authors: Álvarez Muñoz
authors: Servicio de Cirugía Pediátrica. Hospital Universitario Central de Asturias. Oviedo.
authors: M
authors: M
authors: Oviedo Gutiérrez
authors: Servicio de Cirugía Pediátrica. Hospital Universitario Central de Asturias. Oviedo.
authors: C
authors: C
authors: Montalvo Ávalos
keywords: Hypospadias; Maximum flow rate; Mean flow rate; Uroflowmetry