Solifenacin or Mirabegron Could Improve Persistent Overactive Bladder Symptoms After Dutasteride Treatment in Patients With Benign Prostatic Hyperplasia

Takahiro Maeda, Eiji Kikuchi, Masanori Hasegawa, Katsura Ishioka, Masayuki Hagiwara, Yasumasa Miyazaki, Toshiaki Shinojima, Akira Miyajima, Mototsugu Oya

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Objective To evaluate the clinical response and adverse events (AEs) of solifenacin (SOL) or mirabegron (MIR) in benign prostatic hyperplasia patients with persistent overactive bladder (OAB) symptoms after dutasteride (DUT) treatment. Methods Fifty cases with residual OAB symptom score (OABSS) ≥5 and OABSS Q3 ≥2 after at least 6 months treatment of DUT were included in this study. Patients were administered 5 mg/d of SOL (N = 25) or 50 mg/d of MIR (N = 25), and International Prostate Symptom Score (IPSS) and OABSS were prospectively collected at 4 and 12 weeks. The safety was evaluated by changes in postvoided residual urine volume and the incidence of AEs. Results After DUT administration, the mean prostate volume, IPSS, and OABSS were 39.0 mL, 17.6, and 8.1, respectively. SOL 5 mg significantly reduced the IPSS, OABSS, and OABSS Q3 at 4 and at 12 weeks (-3.1, -2.7, -1.3; P <.05); however, 4 patients could not continue the SOL treatment owing to AEs. All patients could continue the 12 weeks of MIR treatment, and MIR 50 mg reduced IPSS and OABSS at 4 weeks and reduced IPSS, OABSS, and the OABSS Q3 (-3.0, -2.5, -0.9; P <.05) at 12 weeks. Postvoided residual urine volume increased by ≥100 mL after treatment in 2 cases in the SOL group but not in any patient in the MIR group. Conclusion Additional SOL or MIR might result in amelioration of the persistent OAB symptom after DUT treatment in patients with an enlarged prostate.

Original languageEnglish
Article number19056
Pages (from-to)1151-1155
Number of pages5
JournalUrology
Volume85
Issue number5
DOIs
Publication statusPublished - 2015 May 1

ASJC Scopus subject areas

  • Urology
  • Medicine(all)

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