JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Changes in voiding function after laparoscopic sacrocolpopexy for advanced pelvic organ prolapse: a cohort study of 76 cases.

INTRODUCTION AND HYPOTHESIS: We evaluated changes in voiding function at 3 months after laparoscopic sacrocolpopexy (LSC) for advanced pelvic organ prolapse (POP) patients and identified risk predictors for postoperative voiding dysfunction.

METHODS: Seventy-six patients with advanced POP who underwent LSC were enrolled in this retrospective cohort study. Pre- and postoperative objective voiding function was assessed by uroflowmetry plus postvoid residual (PVR) volumes. Voiding dysfunction was defined as a maximum flow rate (Qmax ) < 15 ml/s, average flow rate (Qave ) < 10 ml/s, or PVR > 50 ml. Statistical analyses were performed using paired-sample t tests, McNemar's tests, and multivariate regression analyses.

RESULTS: Thirty patients (39%) showed evidence of voiding dysfunction preoperatively, but two thirds of these patients were asymptomatic. Voiding dysfunction decreased significantly from baseline to 3 months after surgery (39% vs. 21%, p = 0.009), including a decrease among patients with Qave  < 10 ml/s (32% vs. 17%, p = 0.043) and PVR > 50 ml (24% vs. 9%, p = 0.019). Voiding difficulty decreased significantly from baseline to 3 months after surgery (32% vs. 9%, p < 0.001); urgency and urinary incontinence symptoms did not exhibit significant improvement (p > 0.05). Multivariate analysis identified Qave  < 10 ml/s as the independent predictor of postoperative voiding dysfunction [p = 0.014, odds ratio (OR) = 4.77, 95% confidence interval (CI) 1.37-16.54].

CONCLUSIONS: Preoperative voiding dysfunction is common among patients with POP and significantly improves at 3 months following LSC. A preoperative Qave  < 10 ml/s was an independent risk factor for postoperative voiding dysfunction.

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