PURPOSE: A study was designed to compare intracorporeal injections of papaverine plus phentolamine (2-drug solution) and papaverine plus phentolamine and prostaglandin E1 (3-drug solution) for the treatment for impotence. MATERIALS AND METHODS: A total of 20 impotent patients received intracorporeal injections of the 2-drug or 3-drug solution alternately during 2 sessions, and the quality and duration of erections were assessed. RESULTS: Of the patients 73% achieved a full erection with the 3-drug solution compared to 28% with the 2-drug solution. The average duration of erections was 57 minutes and 33.6 minutes, respectively. The complication rate was similar for the 2 treatments. CONCLUSIONS: Papaverine plus phentolamine and prostaglandin E1 is superior to papaverine plus phentolamine alone for the treatment of impotence.
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Shenfeld et al. (1995) studied this question.
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