[Value of Doppler ultrasonography in the diagnosis of erectile dysfunction of venous origin].
Corporeal vein-occlusive dysfunction (CVOD) is a frequent cause of impotence. A study with eco-doppler was conducted in 36 cases where leaking was the single cause of dysfunction and in 12 associated to arterial disease, in order to evaluate whether this technique is able to diagnose the condition. The study with eco-doppler, at rest and 20 minutes after intracavitary injection (ICI) with a vasodilating agent, shows changes in the arterial vascularization that allow to suggest the existence of venous disease: similar arterial dilation and peak systolic speed as in subjects with no disease, diastolic speed higher than the control group (p < 0.01), flow during diastole (p < 0.001) and resistance index lower than the control group (p < 0.001). All the above involve a high sensitivity (97.2%) with 81.4% positive predictive value in the diagnosis of venous conditions. Specificity, however, is low (27.3%) since some subjects with no arterial disease do not display full erection 20 minutes post-ICI. By evaluating the ecodoppler and the overall erectile response, the diagnostic ability is increased when leaking is the only cause of dysfunction, reaching a 100% positive and 91.7% negative predictive value. When etiology of the condition is both arterial and venous, the eco-doppler is unable to indicate the existence of the venous condition.
Vidal Moreno
J F
JF
Servicio de Urología, Hospital Universitario La Fe, Valencia.
Moreno Pardo
B
B
Jiménez Cruz
J F
JF
D000328:Adult; D000368:Aged; D006801:Humans; D018783:Impotence, Vasculogenic / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D010413:Penis / Q000098:blood supply / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D018608:Ultrasonography, Doppler
Valor del eco-Doppler en el diagnóstico de disfunción erectil de causa venosa.