Early Experience With a Thermo-Expandable Stent (Memokath) for the Management of Recurrent Urethral Stricture
Jung Hyun-Su, 김준우, 이준녕, 김현태, 유은상, 김범수,
소속 상세정보
( Jung Hyun-Su )
Kyungpook National University School of Medicine Department of Urology
김준우 ( Kim Joon-Woo )
Kyungpook National University School of Medicine Department of Urology
이준녕 ( Lee Jun-Nyung )
Daegu Fatima Hospital Department of Urology
김현태 ( Kim Hyun-Tae )
Kyungpook National University School of Medicine Department of Urology
유은상 ( Yoo Eun-Sang )
Kyungpook National University School of Medicine Department of Urology
김범수 ( Kim Bum-Soo )
Kyungpook National University School of Medicine Department of Urology
KMID : 0358320130540120851
Abstract
Purpose:To report our early experience with thermo-expandable urethral stents (Memokath) for the management of recurrent urethral stricture and to assess the efficacy of urethral stents.
Materials and Methods:Between March 2012 and February 2013, 13 patients with recurrent urethral stricture after several attempts with direct visual internal urethrotomy (DVIU) or failed urethroplasty underwent DVIU with thermally expandable, nickel-titanium alloy urethral stent (Memokath) insertion. Follow-up study time points were at 1, 3, 6, 9, and 12 months after stent insertion. Follow-up evaluation included uroflowmetry, retrograde urethrogram, plain radiography, and urinalysis.
Results:The mean patient age was 47.7 years (range, 18 to 74 years). The mean urethral stricture length was 5.54 cm (range, 1 to 12 cm). There were six patients with bulbar, four patients with proximal penile, one patient with distal penile, and two patients with whole penile urethral strictures, respectively. The overall success rate was 69% (9/13) and the mean postoperative peak flow rate was 17.7 mL/s (range, 6 to 28 mL/s). Major complications occurred in four patients including one patient (7.7%) with urethrocutaneous fistula induced by the stent and three patients with urethral hyperplasia. The mean follow-up duration was 8.4 months.
Conclusions:Our initial clinical experience indicates that thermo-expandable stents can be another temporary management option for recurrent urethral stricture patients who are unfit for or refuse urethroplasty. Distal or whole penile urethral stricture can be factors predicting poor results.
키워드
Stents; Urethral strictures
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