Diagnostic categorization of erectile dysfunction using duplex color doppler ultrasonography and significance of phentolamine redosing in abolishing false diagnosis of venous leak impotence: A single center experience

This study was aimed at establishing vasculogenic causes among patients being evaluated for ED using Penile Doppler Ultrasound. Methods: Fifty-two consecutive patients with the clinical diagnosis of ED were evaluated with color Doppler ultrasound scan using a 7.5 MHz high-frequency linear transducer between July 2016 and June 2019. The examination was commenced 3 min after an intracavernosal injection with 10-20 μg of PGE1 and continued for 30 min. The measurements were obtained alternately from both deep penile arteries. The variables analyzed were the peak systolic velocity (PSV), end-diastolic velocity (EDV) and resistive index (RI), calculated as (PSV-EDV)/PSV. Erection Hardness was evaluated subjectively using the EH Score (EHS), a 5-point response score denoting how the patient would rate his erection. ED was subjectively assessed using the International Index of Erectile Function (IIEF-5) questionnaire. In patients with a diagnosis of vasculogenic ED, intracavernosal PGE1injection was started with a 5 μg dose and then increased in 5 μg increments until the final dose of 20 μg was reached. Results: PSV of cavernosal arteries (CA) varied between 19.2 and 106.2 cm/s (mean: 43.8 ± 18.2) among the entire patients and between 19.7 and 80.2 cm/s (mean: 42.6 ± 11.3) among patients with arteriogenic ED. Arteriogenic ED was found in 8 patients (15.3%), while venogenic ED was observed in 12 pat...
Source: Indian Journal of Radiology and Imaging - Category: Radiology Authors: Source Type: research