A new study has found that botox (onabotulinum toxin-A) injections are as effective as oral medication for treating urinary urgency incontinence in women, though botox injection is more likely to completely resolve symptoms.
These findings were reported by a National Institutes of Health clinical trials network including Loyola University Chicago Stritch School of Medicine (SSOM).
AdvertisementUrgency incontinence is urinary incontinence with a strong or sudden need to urinate. Traditionally, this condition has been treated with drugs known as anticholinergics, which reduce bladder contractions by targeting the bladder muscle through the nervous system. However, many women who take anticholinergic medications experience side effects, including constipation, dry mouth and dry eyes.
"Prior to this study, we reserved onabotulinum toxin-A for women who did not respond to traditional oral medication. However, this research supports the use of either of these approaches as appropriate first-line treatment in women," said Linda Brubaker, MD, MS, co-author and dean, SSOM.
Women are twice as likely to experience urinary incontinence as men.
This study evaluated 241 women with urinary urgency incontinence. One group of participants received six-months of daily oral medication plus a saline injection. The other group received one injection of onabotulinum toxin-A (Botox) plus a daily oral placebo capsule. At the beginning of the study, patients had an average of five urgency incontinence episodes a day.
The average reduction in episodes over six months was 3.4 with oral medication and 3.3 with onabotulinum toxin-A. The proportion of women with complete resolution of urgency incontinence was 13 percent with anticholinergics and 27 percent with onabotulinum toxin-A. Quality of life improved in both groups without significant differences.
More participants in the anticholinergic group reported dry mouth (46 percent versus 31 percent) while the onabotulinum toxin-A group had more urinary tract infections (28 percent versus 15 percent) and more incomplete bladder emptying, requiring temporary bladder catheterization (5 percent versus 0 percent).
"These results will help doctors weigh treatment options for women and make recommendations based on individual patient needs," said Dr. Brubaker, who is in the Division of Female Pelvic and Reconstructive Surgery, Loyola University Health System.
These findings were published in the latest issue of The New England Journal of Medicine.
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