Predictive value of patient history and correlation of nocturnal penile tumescence, colour duplex Doppler ultrasonography and dynamic cavernosometry and cavernosography in the evaluation of erectile dysfunction
- 1 February 1999
- journal article
- research article
- Published by Springer Nature in International Journal Of Impotence Research
- Vol. 11 (1) , 47-51
- https://doi.org/10.1038/sj.ijir.3900369
Abstract
Aims: The results of history and physical examination, nocturnal penile tumescence testing (NPT), colour flow duplex Doppler ultrasonography and dynamic infusion cavernosometry and cavernosography (DICC) were retrospectively correlated in 207 patients with erectile dysfunction. Methods and materials: The predictive value of the patient’s own subjective assessment of early morning and nocturnal erections, history of cigarette smoking, the presence of vascular risk factors was correlated to the outcome of investigations. The result of Rigiscan NPT was correlated to the peak systolic velocity (PSV) and the resistance index (RI) determined at colour flow duplex Doppler ultrasonography, and the maintenance flow rate (Qm) determined at DICC. Results: Eighty-five out of two hundred and seven patients (41%) had normal NPT comprising 48 out of 85 patients (56%) who described rigid early morning and nocturnal erections, 15 out of 85 patients (18%) who smoked cigarettes and 9 out of 85 patients (11%) with other positive vascular risk factors. 72 out of 85 patients (85%) had a normal PSV (>30 cm/s), 80 out of 85 patients (94%) had a normal RI (>0.85) and 82 out of 85 patients (96%) had a normal Qm), (m but does not exclude organic impotence; (3) abnormal NPT correlates well with abnormal PSV, RI and Qm.Keywords
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