前立腺肥大症に対する塩酸タムスロシン0.2 mg から0.3 mg への増量効果の検討

Abstract

We determined the clinical efficacy of a loading dose of tamsulosin (0.2-0.3 mg) in patients with benign prostate hyperplasia (BPH). Tamsulosin was administered at a dose of 0.3 mg to 26 patients with BPH and moderate or severe urinary disturbance, as determined on the basis of the international prostate symptom score (I-PSS) and quality of life (QOL) severity. The I-PSS and QOL index were caluculated before and at the end of the 12-week administration period. The total I-PSS and QOL index were significantly decreased at 12 weeks compared with the baseline (p=0.003, and p=0.011, respectively). Significant differences were observed in the changes in 3 I-PSS items (stream, p=0.042 ; nocturia, p=0.012 ; urgency, p=0.003). On the basis of these findings, we conclude that the administration of 0.3 mg tamsulosin to patients with BPH improves the scores of objective indexes, and may specifically ameliorate urinary storage symptoms.