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Nonsurgical transurethral collagen denaturation for stress urinary incontinence in women: 12-month results from a prospective long-term study.

Abstract：

STUDY OBJECTIVE:To assess efficacy of nonsurgical transurethral collagen denaturation (Renessa) in women with stress urinary incontinence (SUI) caused by bladder outlet hypermobility. DESIGN:Continuing, prospective, 36-month, open-label, single-arm clinical trial. Twelve-month results from intent-to-treat (ITT) analysis are reported. Canadian Task Force classification II-2. SETTING:Thirteen physician offices or ambulatory treatment centers. PATIENTS:Women with SUI secondary to bladder outlet hypermobility for 12 months or longer who failed earlier conservative treatment and had not received earlier surgical or bulking agent therapy. INTERVENTIONS:Women were treated as outpatients and received an oral antibiotic and local periurethral anesthesia before undergoing treatment with transurethral radiofrequency collagen denaturation. MEASUREMENTS AND MAIN RESULTS:Voiding diaries and in-office stress pad weight tests yield objective assessments. Subjective measures include the Incontinence Quality of Life (I-QOL), Urogenital Distress Inventory (UDI-6), and Patient Global Impression of Improvement (PGI-I) instruments. In total, 136 women received treatment (ITT population). Patients experienced significant reductions versus baseline in median number of leaks caused by activity/day and activity/week (p <.0026 for both), with 50% of patients reporting 50% or more reduction. Pad weight tests revealed that 69% of women had 50% or more reduction in leakage (median reduction 15.2 g; p <.0001); 45% were dry (29% no leaks; 16% < 1-g leakage). Significant improvements occurred in median scores on the I-QOL (+9.5 [range -66.0 to 91.0]; p <.0001) and mean scores on the UDI-6 (-14.1 +/- 24.7; p <.0001). Furthermore, 71.2% showed I-QOL score improvement, including 50.3% with 10-point or greater improvement, and 49.6% reported on the PGI-I that they were "a little," "much," or "very much" better. CONCLUSION:At 12 months, treatment of SUI with nonsurgical transurethral collagen denaturation resulted in significant improvements in activity-related leaks and quality of life.

journal_name

J Minim Invasive Gynecol

journal_title

Journal of minimally invasive gynecology

authors

Elser DM,Mitchell GK,Miklos JR,Nickell KG,Cline K,Winkler H,Wells WG

doi

10.1016/j.jmig.2008.09.621

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

56-62

issue

eissn

1553-4650

issn

1553-4669

pii

S1553-4650(08)01030-3

journal_volume

pub_type

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Nonsurgical transurethral collagen denaturation for stress urinary incontinence in women: 12-month results from a prospective long-term study.