Pudendal Assessment in Erectile Dysfunction

The study will address the role of internal pudendal artery disease in erectile dysfunction
(ED), and whether it might eventually be amenable to intervention with stenting. There is
currently a small trial investigating the potential benefit of stenting for erectile
dysfunction, but the relationship between pelvic arterial stenoses and erectile dysfunction
is not yet proven. The investigators intend to perform angiography on patients both with and
without erectile dysfunction, to see whether internal pudendal artery disease is more common
in the population with erectile dysfunction. In addition to angiography, stenoses will be
examined using fractional flow reserve. The degree of internal pudendal artery disease will
then be correlated with the degree of erectile dysfunction using a validated questionnaire,
the International Index of Erectile Function (IIEF). Patients will then complete IIEF
questionnaires for 5 years to assess the relationship between internal pudendal artery
disease and progression of erectile dysfunction.