RESUMO
AIMS: To determine the effect of pelvic organ prolapse (POP) repair on post-operative detrusor overactivity (DO) in women who have underwent incontinence surgery, using multivariate analysis. METHODS: A retrospective study was carried out on a cohort of 105 women who underwent incontinence surgery. In 39 of the patients this surgery was associated with pelvic organ prolapse repair. Clinical and urodynamic data were collected pre- and 3 months post-operatively. A multivariate statistical analysis was performed to detect confounding factors which could influence on the risk factors associated with post-operative detrusor overactivity. RESULTS: On univariate analysis, the following pre-operative factors were associated with post-operative detrusor overactivity: symptomatic mixed urinary incontinence, rectocele, detrusor overactivity, voided volume on free uroflowmetry, maximum cystomanometric capacity, and performing concomitant pelvic organ prolapse repair. Multivariate analysis, by means of confounding factors elimination, revealed that only pre-operative rectocele and detrusor overactivity were independent risk factors. CONCLUSIONS: The pelvic organ prolapse repair acts as a confounding factor. Women with a pre-operative rectocele and detrusor overactivity are on a greater risk to develop post-operative detrusor overactivity and, therefore, they should be informed.