Impacto de los colgajos transanales de avance en la continencia fecal / Impact of endorectal advancement flaps in fecal incontinence

Objetivo El objetivo de este estudio ha sido evaluar de forma prospectiva los resultados funcionales en una serie de colgajos de avance para tratar fístulas anales complejas. Material y métodos Se incluyó a 90 pacientes intervenidos por fístulas anales complejas mediante fistulectomía y colgajo transanal. Los resultados funcionales se valoraron mediante cuestionario de continencia anal (Wexner) y estudio manométrico anorrectal, preoperatorio y postoperatorio. Resultados La fístula recidivó en 7 (7,7%) casos y se repitió la misma técnica quirúrgica en 5, con curación en todos ellos. Después de 3 meses de la cirugía, se produjeron reducciones significativas en la presión máxima basal (83,85±30,96 frente a 46,51±18,67; p<0,001) y en la presión máxima de contracción voluntaria (220,97±100,21 frente a 183,06±75,36; p<0,001). Por lo que respecta al cuestionario de continencia fecal, el 80% de los pacientes mantuvo continencia normal con puntuación 0 en la escala de Wexner postoperatoria, mientras que los demás (20%) manifestaron cambios en la puntuación del cuestionario, la mayoría, menos de 3 puntos y con poca significación clínica. Conclusiones La reparación con colgajo de avance es una técnica efectiva para las fístulas anales complejas, con una tasa de recurrencia baja. El 20% de los pacientes modifican la valoración de su continencia en el postoperatorio (AU)

Objective The aim of this study was the prospective evaluation of the functional results of a series endorectal advancement flaps in the treatment of complex anal fistulas. Material and methods A total of 90 patients were operated on for a complex anal fistula by means of fistulectomy and endorectal advancement flap. The functional results were evaluated using the Wexner continence scale and an anorectal manometry study before and after surgery. Results There were seven patients with fistula recurrence (7.7%) and the same surgical procedure was performed on five of them, resulting in healing in all cases. Significant reductions in maximum resting pressure (83.85±30.96 vs 46.51±18.67; p<0.001) and maximum squeeze pressure (220.97±100.21 vs 183.06±75.36; p<0.001) were seen 3 months after surgery. On the continence scale, 80% of patients had a normal continence with a value of 0 on the postoperative Wexner scale, while 20% recorded changes in continence values, most of them lower than 3 points. Conclusions Endorectal advancement flap is an effective surgical procedure in complex anal fistulas treatment, with a low recurrence rate. Only 20% of the patients showed changes in the continence value (AU)

Clinical and manometric results of endorectal advancement flaps for complex anal fistula.

BACKGROUNDS AND AIM: Endorectal advancement flap repair is a well-recognized method for the treatment of complex anorectal fistula. The purpose of this study was to prospectively assess the clinical and functional results of endorectal advancement flaps for complex anorectal fistula and to identify factors that affect outcome. MATERIALS AND METHODS: A prospective study of 56 patients was performed. Clinical and functional results were studied using the Wexner continence scale and anal manometry before and after surgery. Factors associated with recurrence and incontinence were analyzed by univariate and multivariate regression analysis. RESULTS: Sixty endorectal flaps were constructed in 56 patients. Mean age was 49 years (range 24-74). The fistula was of cryptoglandular origin in 91.1% cases. Mean follow-up was 43.8 months. The technique was repeated in four patients because of recurrence (7.1%), with subsequent healing in all cases. There were significant reductions in maximum resting pressure 3 months after surgery (83.6+/-33.2 vs 45.6+/-18.3, p<0.001) and maximum squeeze pressure (208.8+/-91.5 vs 169.5+/-75, p<0.001). Before surgery, five patients (8.9%) reported incontinence symptoms. After surgery, 78.6% patients had normal continence, seven patients (12.5%) complained of minor incontinence, and five (9%) had major continence disturbances. None of the variables studied (age, sex, previous fistula surgery, rectovaginal fistula, and Crohn's disease) affected the outcome of the procedure in multivariate analysis. CONCLUSIONS: Endorectal advancement flap repair is an effective technique for complex anal fistula, with a low recurrence rate (7.1%). Patients (21.4%) reported disturbed anal continence. It is still not possible to identify factors that are predictive of failure or incontinence.