Pelvic Angiography in Non-Responders to Phosphodiesterase-5 Inhibitors (PANPI)
Pelvic Angiography in Non-Responders to Phosphodiesterase-5 Inhibitors (PANPI)
The specific aim of this pilot study is to describe the angiographic prevalence and pattern
 of internal pudendal artery (and associated inflow vessel) atherosclerosis in patients with
 erectile dysfunction who are non-responsive to PDE-5 inhibitors (i.e., Viagra) who are
 referred for clinically-indicated cardiac catheterization.
The specific aim of this study is to determine if the deep penile arteries can be seen
 angiographically from the iliac arteries to delineate penile vasculature. Significant
 obstructive atherosclerotic disease of the deep penile arteries may be present in impotent
 males. The etiology of erectile dysfunction is multifactorial and may involve vascular
 disease, endocrine disorders, neurologic disease, prescription medications, psychological
 issues and/or trauma in any given patient. Vascular disease in patients with erectile
 dysfunction may be due to trauma, congenital anomalies, or atherosclerosis.
Inclusion Criteria:

 -  Male patients

 -  at least 50 years

 -  erectile dysfunction

 -  dissatisfaction with their use of a phosphodiesterase-5 inhibitor

 -  coronary artery disease (or at risk for coronary artery disease)

 -  undergoing diagnostic cardiac catheterization or patients with peripheral vascular
 disease undergoing peripheral arteriography

 Exclusion Criteria:

 -  Patients who respond favorably to phosphodiesterase-5 inhibitors

 -  known non-vascular etiologies of their erectile dysfunction

 -  probable neurogenic erectile dysfunction due to radiation injury, surgery, or
 transurethral resection of the prostate

 -  calculated GFR < 60 ml/min/1.73 m2 will also be excluded

 -  disease that necessitates complex percutaneous intervention will be excluded per the
 investigators discretion