Abstract
To assess the value of hormone replacement therapy (HRT) in postmenopausal women with faecal incontinence. Prospective observational study using a bowel function questionnaire and anorectal physiological testing before and after six months of standard oestrogen hormone replacement therapy. Menopause and colorectal clinics of two university teaching hospitals. Twenty postmenopausal women (mean age 61 years) with demonstrable faecal incontinence (mean duration 6.1 years) previously untreated with HRT. Improvement in symptoms and objective alteration in anorectal physiology tests. All women had significant symptoms of anorectal dysfunction before treatment, whereas 5/20 (25%) were asymptomatic after six months of HRT, and a further 13/20 (65%) were symptomatically improved in terms of flatus control, urgency, and faecal staining. There was no change in bowel frequency or stool consistency following HRT, but social activity was considerably improved. Anal resting pressures and voluntary squeeze increments were significantly increased following oestrogen therapy, although no differences in anal canal vector symmetry index were observed. Insignificant changes occurred in threshold volume of rectal sensation and volume of defaecatory urge, but there was a significant change in maximum tolerated rectal volume after six months. Neither anal canal electrosensitivity nor pudendal nerve terminal motor latency was altered following HRT. Seven of the 20 women (35%) had an identifiable anal sphincter defect on anal endosonography. Statistical analysis, however, showed no significant difference in outcome in this group compared with those with an intact anal sphincter. A larger population sample may demonstrate this. This observational study has shown a possible benefit of oestrogen replacement in postmenopausal women with symptoms of impaired faecal continence. A prospective randomised controlled trial is now advisable to test this hypothesis.
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