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Journal Article
Research Support, Non-U.S. Gov't
Long-term results of artificial urinary sphincter for women with type III stress urinary incontinence.
European Urology 2013 April
BACKGROUND: The use of the artificial urinary sphincter (AUS) in women is limited.
OBJECTIVE: To analyse long-term results and mechanical survival of the AUS (AMS 800; American Medical Systems, Minnetonka, MN, USA) in women with stress urinary incontinence (SUI) due to intrinsic sphincter deficiency (ISD).
DESIGN, SETTING, AND PARTICIPANTS: Women with SUI who were treated between January 1987 and March 2007 were included in this prospective study. Only women with low closure pressure at urethral profile and negative continence tests, indicators of severe ISD, were included.
INTERVENTIONS: An AUS was implanted. The surgical technique was modified in 1999, involving opening the endopelvic fascia on both sides and dissection in contact with the vaginal wall.
OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Assessment of complications was made pre- and postoperatively and continence status was based on pad usage. Kaplan-Meier survival curves were used to calculate mechanical survival of the device. Student t test and the chi-square test were used to compare continence and complication rates.
RESULTS AND LIMITATIONS: A total of 376 AUS were implanted in 344 patients, whose mean age was 57 yr. The mean follow-up, plus or minus standard deviation, was 9.6±4.0 yr. At last follow-up, postoperative continence rates, assessed as fully continent (no leakage), socially incontinent (some drops but no pad), or incontinent (one pad or more), were 85.6%, 8.8%, and 5.6%, respectively. The 3-, 5-, and 10-yr device survival rates were 92.0%, 88.6%, and 69.2%, respectively. The mean mechanical survival was 176 mo (14.7 yr). Three risk factors for AUS survival were the number of previous incontinence surgeries, the presence of neurogenic bladder, and simultaneous augmentation enterocystoplasty. Principal limitation of the study is the absence of validated incontinence questionnaire.
CONCLUSIONS: The AUS provides excellent outcome in women with ISD, with low explantation rate and very good device survival.
OBJECTIVE: To analyse long-term results and mechanical survival of the AUS (AMS 800; American Medical Systems, Minnetonka, MN, USA) in women with stress urinary incontinence (SUI) due to intrinsic sphincter deficiency (ISD).
DESIGN, SETTING, AND PARTICIPANTS: Women with SUI who were treated between January 1987 and March 2007 were included in this prospective study. Only women with low closure pressure at urethral profile and negative continence tests, indicators of severe ISD, were included.
INTERVENTIONS: An AUS was implanted. The surgical technique was modified in 1999, involving opening the endopelvic fascia on both sides and dissection in contact with the vaginal wall.
OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Assessment of complications was made pre- and postoperatively and continence status was based on pad usage. Kaplan-Meier survival curves were used to calculate mechanical survival of the device. Student t test and the chi-square test were used to compare continence and complication rates.
RESULTS AND LIMITATIONS: A total of 376 AUS were implanted in 344 patients, whose mean age was 57 yr. The mean follow-up, plus or minus standard deviation, was 9.6±4.0 yr. At last follow-up, postoperative continence rates, assessed as fully continent (no leakage), socially incontinent (some drops but no pad), or incontinent (one pad or more), were 85.6%, 8.8%, and 5.6%, respectively. The 3-, 5-, and 10-yr device survival rates were 92.0%, 88.6%, and 69.2%, respectively. The mean mechanical survival was 176 mo (14.7 yr). Three risk factors for AUS survival were the number of previous incontinence surgeries, the presence of neurogenic bladder, and simultaneous augmentation enterocystoplasty. Principal limitation of the study is the absence of validated incontinence questionnaire.
CONCLUSIONS: The AUS provides excellent outcome in women with ISD, with low explantation rate and very good device survival.
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