Artificial urinary sphincter revision for urethral atrophy: Comparing single cuff downsizing and tandem cuff...

Area of Science:

• Urology
• Medical Devices
• Surgical Outcomes

Background:

• Urethral atrophy is a complication following artificial urinary sphincter (AUS) implantation.
• Revision surgery for urethral atrophy presents unique challenges in device survival and functional outcomes.
• Surgical strategies for AUS revision include single cuff downsizing and tandem cuff placement.

Purpose of the Study:

• To compare the effectiveness of single urethral cuff downsizing versus tandem cuff placement during artificial urinary sphincter revision for urethral atrophy.
• To evaluate device survival and complication rates associated with different surgical revision strategies for urethral atrophy.

Main Methods:

• Retrospective review of 1778 artificial urinary sphincter (AUS) surgeries from 1990-2014.
• Identified 69 first AUS revisions specifically for urethral atrophy.
• Compared outcomes between single cuff downsizing (n=12) and tandem cuff placement (n=56) strategies.

Main Results:

• No significant difference in 3-year overall device survival between single cuff downsizing (60%) and tandem cuff placement (76%) (p=0.94).
• Similar rates of tertiary surgery (HR 0.95, p=0.94) and urethral erosion/device infection (HR 0.79, p=0.77) were observed for both revision strategies.
• Patient cohorts undergoing single cuff downsizing and tandem cuff placement were comparable in age, BMI, prior radiation, and follow-up duration.

Conclusions:

• Single cuff downsizing and tandem cuff placement demonstrate comparable overall device survival following artificial urinary sphincter revision for urethral atrophy.
• The choice between single cuff downsizing and tandem cuff placement may not significantly impact the risk of further complications or device failure in this patient population.