title: [The clinical efficacy and safety of naftopidil 75 mg on benign prostatic hyperplasia patients with moderate or severe urinary disturbance].
abstract: We investigated the clinical efficacy and safety of administration of naftopidil at 75 mg for clinically benign hyperplasia patients who had moderate or severe urinary disturbance according to guidelines for clinical studies regarding urination disorder. Among patients with benign prostatic hyperplasia who were treated with a alpha1-adrenoceptor blocker, we administered naftopidil (75 mg/day) for 12 weeks to 85 patients in whom the global severity was evaluated as moderate or severe. This agent significantly reduced the international prostate symptom score (I-PSS) and residual urine volume, and improved the QOL index and maximum urine flow volume in comparison with the baselines. Concerning the global treatment response, a partial response or better was achieved in 83.8% of the patients. Neither blood pressure nor heart rate were changed in patients who continued to receive this therapy. Side effects included orthostatic hypotension (1 patient: discontinuation), dizziness (2 patients: discontinuation, 1 patient: continuation), and palpitation (1 patient: discontinuation). These results suggest that a once-a-day administration of naftopidil at 75 mg safely relieves urination/accumulated urine symptoms in patients with moderate or severe urination disorder related to prostatic hypertrophy.
authors.affiliation: Department of Urology, Osaka University Graduate School of Medicine.
authors.forename: Masao
authors.initials: M
authors.lastname: Tsujihata
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Yoshimura
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Kojima
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Oda
authors.forename: Osamu
authors.initials: O
authors.lastname: Miyake
authors.forename: Kinya
authors.initials: K
authors.lastname: Uchida
authors.forename: Akihiko
authors.initials: A
authors.lastname: Okuyama
mesh_terms: D000317:Adrenergic alpha-Antagonists / Q000008:administration & dosage* / Q000009:adverse effects; D000368:Aged; D006801:Humans; D008297:Male; D009281:Naphthalenes / Q000008:administration & dosage* / Q000009:adverse effects; D010879:Piperazines / Q000008:administration & dosage* / Q000009:adverse effects; D011470:Prostatic Hyperplasia / Q000150:complications* / Q000188:drug therapy*; D016055:Urinary Retention / Q000188:drug therapy* / Q000209:etiology
chemical_list: D000317:Adrenergic alpha-Antagonists; D009281:Naphthalenes; D010879:Piperazines; C064357:naftopidil