MP47-10 THE COMPARISON OF ERECTILE FUNCTION BETWEEN RADICAL NEPHRECTOMY GROUP AND PARTIAL NEPHRECTOMY GROUP.

vasoactive agent. The primary aim of the study was to construct agespecific CDDU parameters for patients without organic erectile dysfunction. METHODS: A retrospective review was conducted to identify patients without organic ED who underwent in-office testing with intracavernous pharmacologic erection augmented by visual sexual stimulation and CDDU over a 5 year period. Patients were further characterized by demographic and Doppler data. Specifically, CDDU characteristics including pre and post-visual stimulation peak systolic velocity (PSV) and resistive index (RI) were identified. Patients with post-visual stimulation PSV > 35cm/s and RI > 0.9 were included in the analysis. Pearson correlation test was used to evaluate the association between ordinal age groups with PSV and RI measurements. RESULTS: 259 patients with a mean age 53.7 and a mean BMI of 27.2 were found to have normal Doppler parameters (PSV>35cm/s, RI>.90). For the entire cohort, average post-visual stimulation PSV was 59.8 (35.0-115.5) and average RI was 0.99 (.9-1.0). A majority of patients had limited medical co-morbidities, with only 29%, 7%, and 10% reporting hypertension, Diabetes, and heart disease, respectively. Priapism, as defined by needing an injectable reversible agent, occurred in 93% of patients. Doppler parameters were then analyzed across sequential decades and when age was categorized to 70, a negative correlation coefficient was obtained for pre-visual stimulation PSV (-0.09, P1⁄40.164), post-visual stimulation PSV (-0.23, P1⁄40.005) and RI (-0.005, P1⁄4.937). Pre-visual stimulation, post-visual stimulation and RI were also stratified using age as continuous variable and with a cutoff of age 1⁄4 60 (Table 1). CONCLUSIONS: No patients were diagnosed with arterial insufficiency or cavernous venous occlusive disease. There appears to be an age-related decline in post-visual stimulation PSV. Characterization of Doppler parameters in patients without organic ED can be used to construct cutoffs to further define age-specific normalcy.