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  • Title: Penile pharmacological duplex ultrasonography: a dose-effect study comparing papaverine, papaverine/phentolamine and prostaglandin E1.
    Author: Meuleman EJ, Bemelmans BL, Doesburg WH, van Asten WN, Skotnicki SH, Debruyne FM.
    Journal: J Urol; 1992 Jul; 148(1):63-6. PubMed ID: 1613884.
    Abstract:
    Alternations of penile blood flow are believed to be the most frequent organic cause of erectile dysfunction. Penile duplex ultrasonography following intracavernous injection of a vasoactive agent is an accepted method for diagnosis of penile vascular dysfunction. To determine the diagnostic efficacy of commonly used vasoactive drugs we studied the hemodynamic effects of different dosages of papaverine, the combination of papaverine and phentolamine, and prostaglandin E1 in men with erectile dysfunction and men with normal erectile potency using color duplex ultrasonography. We concluded that 12.5 mg. papaverine and 10 micrograms. prostaglandin E1 are the drugs of choice to be used in conjunction with penile duplex ultrasonography because of optimal effects on cavernous arterial dilatation and low risk of prolonged erection. However, low dose papaverine or prostaglandin E1 has a limited value in evaluating veno-occlusive function.
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