title: Pulsed Magnetic Stimulation for Stress Urinary Incontinence: 1-Year Followup Results.
abstract: Despite significant differences in success rates between surgical and nonsurgical treatments for female stress urinary incontinence, a few cross-sectional surveys showed that most patients still prefer the latter. We evaluated the efficacy of the under studied nonsurgical treatment using pulsed magnetic stimulation for female stress urinary incontinence.
  
  
  
  This randomized, double-blind, sham controlled study was performed in 120 female subjects at least 21 years old with stress urinary incontinence. Treatment involved pulsed magnetic stimulation for 2 sessions per week for 2 months (16 sessions). After 2 months, subjects could opt for 16 additional sessions regardless of initial randomization. The primary response criterion was a 5-point reduction in the ICIQ-UI SF (International Consultation on Incontinence Questionnaire for Urinary Incontinence-Short Form) score. Key secondary response criteria included objective and subjective cure, supplemented by other secondary criteria. Followups were performed at months 1, 2, 5, 8 and 14.
  
  
  
  At 2 months 45 of 60 subjects (75%) in the active arm vs 13 of 60 (21.7%) in the sham arm were treatment responders (p <0.001). After 2 months 24 subjects (40%) in the active arm and 41 (68%) in the sham arm elected additional active pulsed magnetic stimulation. At 14 months, subjects who received 32 sessions of active pulsed magnetic stimulation had the highest percentage of treatment responders (18 of 24 or 75.0%), followed by those who received 16 sessions (26 of 36 or 72.2% and 28 of 41 or 68.3%) and those who did not receive any active pulsed magnetic stimulation (4 of 19 or 21.1%) (p <0.001).
  
  
  
  The encouraging long-term response rates show that pulsed magnetic stimulation is an attractive nonsurgical alternative for patients who do not want to undergo surgery.
authors.affiliation: School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia; School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia. Electronic address: renly_lim@hotmail.com.
authors.forename: Renly
authors.initials: R
authors.lastname: Lim
authors.affiliation: Department of Urology, Island Hospital, Penang, Malaysia.
authors.forename: Men Long
authors.initials: ML
authors.lastname: Liong
authors.affiliation: Department of Urology, Lam Wah Ee Hospital, Penang, Malaysia.
authors.forename: Wing Seng
authors.initials: WS
authors.lastname: Leong
authors.affiliation: School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia.
authors.forename: Nurzalina Abdul
authors.initials: NA
authors.lastname: Karim Khan
authors.affiliation: School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia.
authors.forename: Kah Hay
authors.initials: KH
authors.lastname: Yuen
mesh_terms: D000328:Adult; D000368:Aged; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D055909:Magnetic Field Therapy / Q000379:methods*; D008875:Middle Aged; D017773:Pelvic Floor / Q000503:physiopathology; D010919:Placebos; D016896:Treatment Outcome; D014550:Urinary Incontinence, Stress / Q000628:therapy*
chemical_list: D010919:Placebos
keywords: magnetic field therapy; pelvic floor; risk; stress; urinary bladder; urinary incontinence