Allium Ureteral Stent in Male Bulbar Urethral Stricture
Objective To investigate the safety and efficacy of Allium ureteral stent in the treatment of male bulbar urethral stricture.Methods A total of 14 male patients with urethral stricture who received Allium ureteral stents from June 2021 to December 2023 at the First Affiliated Hospital of Nanchang University were selected as the study subjects,and their clinical data were retrospectively analyzed.All the patients,aged 16 to 66(44.5±15.3)years old,were caused by trauma,with the site of stricture in the bulbar membrane of the urethra,the length of the stricture or atresia ranging from 0.8 to 2.5 cm(mean,1.4 cm),and the maximal preoperative urinary flow rate ranging from 1.5 to 7.8 mL·s-1.Results All 14 patients were successfully implanted with a 6 cm Allium urethral stent in StageⅠ;the stent was fixed to the urethra using sutures during the operation;normal urination was resumed after the operation,with an elevated maximal urinary flow rate of 15.4 mL·s-1,an operative time of(43.5±10.8)min,and an intraoperative bleeding rate of(25.4±10.6)mL;they were discharged from hospital 2 to 5 d after the operation.The postoperative follow-ups ranged from 3 to 29 months(mean 12.4 months);during the follow-ups,3 patients(60%of patients in the early phase,3/5)experienced dislocation due to fixation of the stent with absorbable sutures;2(22%of patients in the late phase,2/9)experienced dislocation after fixation with non-absorbable sutures;5 patients experienced stent infection and in-stent calculi;1 patient had difficulty urinating even after opting for stent removal due to recurrent blockage of the urethral stent for infection at 8 months postoperatively,and ultimately underwent urethroplasty.All patients were followed up until December 2023 with normal urination,no urinary incontinence and no serious complications.Conclusion Despite the risks of concomitant infections,growing stones,and stent migration,the results of short-term follow-ups(mean 12.4 months)suggest that the Allium ureteral stent may remain a safe and effective option for the management of male bulbar urethral stricture.Clinically,the indications for Allium stent surgery should be carefully selected according to the patient's basic conditions and expected outcomes.
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