Progression and remission of pelvic organ prolapse: A longitudinal study of menopausal women

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Abstract

Objective

The purpose of this study was to describe the natural history of pelvic organ prolapse after menopause.

Study design

Over 2 to 8 years, participants in the estrogen plus progestin trial of the Women's Health Initiative at the University of California Davis had annual pelvic examinations, with an assessment of uterine prolapse, cystocele, and rectocele. The findings from these examinations were used to describe the incidence of pelvic organ prolapse, the probability of progression or regression, and the associated risk factors.

Results

At baseline, 31.8% of women had pelvic organ prolapse (n = 412 women). The annual incidences of cystocele, rectocele, and uterine prolapse were 9.3, 5.7, and 1.5 cases per 100 women-years, respectively. Incident prolapse was associated with increasing parity and waist circumference. The progression rates for grade 1 pelvic organ prolapse (per 100 women-years) were 9.5 for cystocele, 13.5 for rectocele, and 1.9 for uterine prolapse. The annual rates of regression (per 100 women-years) was 23.5, 22, and 48, respectively.

Conclusion

Our data suggest that pelvic organ prolapse is not always chronic and progressive as traditionally thought. Spontaneous regression is common, especially for grade 1 prolapse.

Section snippets

Study population

WHI is a prospective study of 161,861 postmenopausal women aged 50 to 79 years in ≥1 of 3 clinical trials or an observational study. These women were enrolled from 1994 to 1998 in 40 US clinical centers. The E-plus-P trial enrolled 27,342 women nationally. Women were eligible if they were postmenopausal, unlikely to move or die within 3 years, not currently using hormone replacement therapy (or willing to stop), and not currently participating in any other clinical trial. Women with a

Study population

The study cohort included 412 participants with two to eight annual examinations (mean, 5.7 examinations). Data from 2340 examinations were included in these analyses. The mean age at enrollment was 64.9 years (range, 50-79 years). Ninety percent of the cohort was white. Eighty-one percent of the cohort was parous, with a median parity of 3 (range, 0-8). The mean BMI at enrollment was 28.5 kg/m2 (range, 15.0-49.1 kg/m2). The mean waist circumference was 89.1 cm.

Eighteen women (4.2%) who had

Comment

To our knowledge, only one previous longitudinal study of POP has been published.6 In that study, 241 women (aged 45-55 years) were followed up for 1 year but the incidence of prolapse was not reported. The mean Baden-Walker grade of anterior wall prolapse decreased from 0.2 to 0.1 (P = .045), and there was no change in the mean grades of posterior wall or uterine prolapse.

Our data, collected in several hundred women over 2 to 8 years, allows us a unique opportunity to investigate the incidence

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Supported by the National Heart, Lung, and Blood Institute, US Department of Health and Human Services.

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