Korean J Urol.  2009 Dec;50(12):1193-1197.

Potassium-Titanyl-Phosphate Laser Photoselective Vaporization of the Prostate in Patients with Benign Prostatic Hyperplasia with Detrusor Underactivity: Influence on Detrusor Pressure

Affiliations
  • 1Department of Urology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. kj.joo@samsung.com

Abstract

PURPOSE
Potassium-titanyl-phosphate laser photoselective vaporization of the prostate (PVP) is a safe and effective treatment for patients with symptomatic benign prostatic hyperplasia (BPH). The aim of this study was to assess the influence and the effect of PVP in BPH patients with detrusor underactivity.
MATERIALS AND METHODS
We evaluated 21 patients with detrusor under-activity treated with PVP for BPH from January 2006 to December 2007. Detrusor underactivity was defined as detrusor pressure at maximal flow rate (Qmax) of less than 30 cmH2O and Qmax of less than 15 ml/s. Urodynamic studies were performed and international prostate symptom score (IPSS) and quality of life (QoL) scores were assessed preoperatively and at 6 months postoperatively.
RESULTS
There were significant improvements in Qmax, voiding urine volume, post-void residual urine volume, IPSS, and QoL scores at 6 months after PVP treatment. However, patients did not show significant changes in maximal bladder capacity, bladder compliance, or detrusor pressure at Qmax.
CONCLUSIONS
Even though BPH patients had detrusor underactivity, PVP was an effective surgical procedure. However, PVP did not make any significant difference on detrusor pressure at Qmax in 6 months.

Keyword

KTP laser; Prostatic hyperplasia; Urodynamics

MeSH Terms

Compliance
Humans
Lasers, Solid-State
Prostate
Prostatic Hyperplasia
Quality of Life
Urinary Bladder
Urodynamics
Volatilization

Figure

  • Fig. 1 Comparisons of clinical parameters (A: Qmax, B: Pdet at Qmax, C: PVR, D: IPSS) at pre- and postoperative. Qmax: maximal flow rate, Pdet at Qmax: detrusor pressure at maximal flow rate, PVR: post void residual, IPSS: International Prostate Symptom Score, a: comparisons of the variables before and after operation.


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