No single study on the topic of sexual dysfunction leapt from the podium as a breakthrough at this year's AUA annual meeting, but a number of studies offered valuable observations about various aspects of sexual function/dysfunction. Among these were studies showing that the degree of personal involvement in restoring sexual function after radical prostatectomy correlates with the degree of success, said John Mulcahy, MD, PhD, professor of urology, Indiana University Medical Center, Indianapolis. Also, research showed that erectile dysfunction can be associated with metabolic disorders and heart disease, and when prescriptions with level 1 interactions overlap, they are often for sildenafil citrate (Viagra) and nitrates.