title: Transurethral electrochemical treatment of benign prostatic hyperplasia.
abstract: OBJECTIVE
  To study the mechanism and feasibility of transurethral electrochemical therapy for the treatment of benign prostatic hyperplasia (BPH).
  
  
  METHODS
  Between March 1998 and March 2000, specifically designed devices and catheters for electrochemical therapy were applied to 6 prostate specimens obtained by suprapubic prostatectomy in order to treat BPH patients with urinary retention for whom surgery was contraindicated. Sixteen patients (with a mean age of 77.3 years old) underwent electrical treatment totaling 160-220 coulombs under topical urethral anesthesia for 68-132 min. The catheters remained inside the patient for 7-10 d.
  
  
  RESULTS
  Irreversible destructive changes occurred within cathodal tissue, while carbonization occurred within anodic tissue. The radius of tissue change was 7-8 mm and 1-2 mm, respectively. In vivo trial: 11 (69%) patients could be weaned off the catheters with satisfactory urination. Three months after therapy, the mean international prostate symptom score (IPSS) was 14.5, mean peak flow rate was 10.5 ml/s, and mean residual urine was 39 ml. No serious complications were observed.
  
  
  CONCLUSIONS
  Transurethral electrochemical treatment is potentially a minimally invasive alternative for treatment of BPH, especially for elderly patients at high risk.
authors.affiliation: Institute of Urology, Peking University, Beijing 100034, China. Min__zh@yahoo.com
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
authors.forename: Kan
authors.initials: K
authors.lastname: Gong
authors.forename: Ningchen
authors.initials: N
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Zeng
authors.forename: Yanqun
authors.initials: Y
authors.lastname: Na
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004599:Electric Stimulation Therapy / Q000009:adverse effects; D004563:Electrochemistry; D006801:Humans; D008297:Male; D011470:Prostatic Hyperplasia / Q000628:therapy*; D020728:Transurethral Resection of Prostate