Can we predict continued pessary use as primary treatment in women with symptomatic pelvic organ prolapse (POP)? A prospective cohort study.

INTRODUCTION AND HYPOTHESIS The objective of this study was creating a prediction model for continued pessary use in patients with symptomatic pelvic organ prolapse (POP) and evaluating the percentage of continued pessary use after 12 months. METHODS We performed a prospective cohort study in patients with symptomatic POP stage ≥ 2. All patients received a pessary as primary treatment. Factors for continuation were identified from baseline characteristics and data from validated disease-specific quality of life (DSQOL) questionnaires. Univariate and multivariate analyses for predictors were performed and a prediction model was made. Improvement of POP was measured using the Patient Global Impression of Improvement (PGI-I) and DSQOL at 12 months' follow-up. Primary outcome was factors related to continued use. Secondary outcomes were the percentage continued pessary use after 12 months, improvement of complaints and DSQOL. RESULTS Two hundred ninety-one patients were included; 184 (63%) patients continued pessary use after 12 months. Factors related to continuation following the univariate analysis were age, sexual activity, POP-Q point c ≥ 0 and obstructive micturition. GH < 4 was not significant but added significantly to the prediction model. After multivariate analysis, age, point c ≥ 0 and GH < 4 cm remained predictors for continuation. The ROC showed an AUC of 0.65 (95% CI 0.58-0.71). PGI-I showed 83% perceived their prolapse complaints much or very much improved. CONCLUSIONS Continued pessary use was found in 63%. Main predictors for continued pessary use were higher age, more prominent apical compartment prolapse (c ≥ 0) and a GH < 4 cm.