title: Treatment of impotence by intrapenile injections. A comparison of papaverine versus papaverine and phentolamine: a double-blind, crossover trial.
abstract: The efficacy of papaverine, and a combination of papaverine and phentolamine as a pharmacological treatment of impotence was compared in a double-blind, crossover trial. A total of 40 impotent men received intracavernous injections of papaverine (40 mg.) or a combination of papaverine (20 mg.) and phentolamine (0.5 mg.) at monthly intervals. Observations at 20 minutes after injection demonstrated that papaverine caused full erections in 27 per cent of the men and partial erections in 65 per cent. The combined injection resulted in full erections in 48 per cent of the men and 52 per cent had partial erections. The difference was significant (Z equals 2.29, p less than 0.05).
authors.affiliation: Reproductive Medicine Research Institute, Nedlands, Western Australia.
authors.forename: E J
authors.initials: EJ
authors.lastname: Keogh
authors.forename: G R
authors.initials: GR
authors.lastname: Watters
authors.forename: C M
authors.initials: CM
authors.lastname: Earle
authors.forename: C J
authors.initials: CJ
authors.lastname: Carati
authors.forename: Z S
authors.initials: ZS
authors.lastname: Wisniewski
authors.forename: G S
authors.initials: GS
authors.lastname: Tulloch
authors.forename: D J
authors.initials: DJ
authors.lastname: Lord
mesh_terms: D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004338:Drug Combinations; D007172:Erectile Dysfunction / Q000628:therapy*; D006801:Humans; D007267:Injections / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000209:etiology; D010208:Papaverine / Q000627:therapeutic use*; D010410:Penile Erection; D010413:Penis / Q000503:physiopathology*; D010646:Phentolamine / Q000627:therapeutic use*; D012725:Sexual Behavior / Q000502:physiology
chemical_list: D004338:Drug Combinations; D010208:Papaverine; D010646:Phentolamine