[Clinical efficacy of the Porges Urospiral, a reversible intraprostatic spiral stent, in patients with benign prostatic hypertrophy].

The Porges Urospiral, a urethral spiral stent made of stainless steel wire, is designed for patients with benign prostatic hypertrophy. To evaluate the safety and efficacy of the stent, a prospective uncontrolled study was performed on 60 patients who complained of urinary retention (48 patients) or severe dysuria (12 patients) due to prostatic hypertrophy. Four patients had neurogenic disorders resulting in bladder dysfunction. The average age of the patients was 77.4 years old, ranging from 61 to 91 years old. In 48 patients, the stent was used instead of transurethral resection of the prostate (TUR-P) because of the patients poor general conditions, while in 12 patients the stent was transiently used until TUR-P. Subjective symptoms, according to an original scoring system, and objective signs, uroflowmetry measurements and residual urine volume, before and 3 months after stent insertion were compared. The stent was indwelt for more than 3 months in 40 of the 57 patients in whom the stent could be inserted. Out of 37 evaluable patients, subjective symptoms improved in all the patients and objective symptoms improved in 26 patients (70.3%). Complications included urinary incontinence, urination pain, urethral pain, gross hematuria or migration of the stent. Although these complications disappeared in a few days after the insertion of the stent in a majority of the patients, the stent was removed in 17 patients due to complications within 3 months after insertion. The overall clinical efficacy of this stent was 56% in 50 evaluable patients who had no neurogenic disorders.(ABSTRACT TRUNCATED AT 250 WORDS)