Vascular (Arterial and Venous) Assessment of Erectile Dysfunction
Vascular assessment in the arena of erectile dysfunction (ED) includes both evaluations of the adequacy of cavernosal arterial inflow and of evaluations of the corporal veno-occlusive mechanism. The hemodynamic demand for arterial inflow in the early phase of an erection is such that inflow increases nearly tenfold from the resting flaccid state. The corporal veno-occlusive mechanism of an erection is an active event critically dependent on the integrity of the corporal trabecular smooth muscle, fibro-elastic skeleton, and lacunar endothelium. Veno-occlusion is effected by the stretching and compression of the subtunical plexus of venules following smooth muscle relaxation.
KeywordsProstaglandin Arena Infertility Papaverine Phentolamine
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