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Randomized Controlled Trial
, 177 (3), 1040-6

A Temporary Intraurethral Prostatic Stent Relieves Prostatic Obstruction Following Transurethral Microwave Thermotherapy

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Randomized Controlled Trial

A Temporary Intraurethral Prostatic Stent Relieves Prostatic Obstruction Following Transurethral Microwave Thermotherapy

Neal D Shore et al. J Urol.

Abstract

Purpose: The Spanner, a novel prostatic stent, was evaluated for safety, efficacy and patient tolerance when used to relieve prostatic obstruction following transurethral microwave thermotherapy.

Materials and methods: Following transurethral microwave thermotherapy and routine post-procedure Foley catheterization at 1 of 9 clinical sites 186 patients meeting study criteria were randomized to receive a Spanner (100) or the standard of care (86). Baseline evaluations included post-void residual urine, uroflowmetry, International Prostate Symptom Score and International Prostate Symptom Score quality of life question. These evaluations were repeated at visits 1, 2, 4, 5 and 8 weeks after randomization (Spanner insertion) with the addition of the Spanner satisfaction questionnaire, ease of use assessment and adverse events recording. The Spanner was removed after 4 weeks, at which time the Spanner and standard of care groups underwent cystourethroscopy.

Results: At the 1 and 2-week visits the Spanner group showed significantly greater improvements from baseline in post-void residual urine, uroflowmetry and International Prostate Symptom Score compared to the standard of care group. The Spanner group experienced significantly greater improvements in quality of life at the 5 and 8-week visits. Patient satisfaction with the Spanner exceeded 86%. Cystourethroscopy findings in the Spanner and standard of care groups were comparable and adverse events associated with previous stents were rare.

Conclusions: The Spanner is a safe, effective and well tolerated temporary stent for severe prostatic obstruction resulting from therapy induced edema after transurethral microwave thermotherapy. It may be a needed addition to the armamentarium for managing bladder outlet obstruction in a broad group of urological patients.

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