Experience of Combination Therapy with Alpha Adrenergic Receptor Antagonist and Anticholinergic Agent in Patients with Lower Urinary Tract Symptoms/Benign Prostatic Hyperplasia: 12 Month Follow-up

Abstract

= Abstract =Purpose: Through more than 12 months of follow-up, the efficacy and safety of combination therapy with alpha adrenergic receptor antagonist and anticholinergic agent was investigated retrospectively. Materials and Methods:This study retrospectively analyzed the data of 84 patients with lower urinary tract symptoms (LUTS)/benign prostatic hyperplasia (BPH) who were managed with an alpha adrenergic receptor antagonist and anticholinergic agent for at least 12 months between Jan 2007 and Dec 2010. On patients' first visit to our department, we obtained the patients' demographic data and information about the prostate total volume, serum prostate specific antigen (sPSA), maximum urinary flow rate (Qmax), International Prostate Symptom Score (IPSS), and postvoid residual (PVR) of each patient. After 12 months, changes in the above factors and the side-effects of anticholinergic agents were investigated. Results:The mean age of the patients was 66.1 years and the total observation period after drug administration was an average 20 months; the total sPSA and prostatic volume of patients was 1.8±0.8 ng/dl and 37.3±9.5 g, respectively. Qmax in uroflowmetry was improved after 12 months of medication (changed from 9.0±3.4 to 13.8±4.5 ml/sec; p＜0.001). PVR was increased from 35±22.2 ml to 49.3±37 ml (p＜0.001), but the change was not clinically significant, and no acute urinary retention occurred. The total IPSS score decreased from 21.4±5.1 to 13.3±4.6 (p ＜0.001), the storage score of IPSS decreased from 9.8±2.4 to 5.6±2 (p＜0.001), and the voiding score was decreased from 11.6±3.7 to 7.7±3.2 (p＜0.001). The QoL with IPSS was improved from 4.2±0.8 to 2.8±0.7 (p＜0.001). During the 12 months there were 34 patients (56 cases) of adverse events. However, no serious adverse events were reported. Conclusions:Combination therapy with alpha adrenergic receptor antagonist and anticholinergic agent was safe and made an improvement in LUTS in patients with BPH and storage symptoms.