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Screening of ischemic heart disease with cavernous artery blood flow in erectile dysfunctional patients.
International Journal of Impotence Research 2001 April
Erection is a hemodynamic event and accordingly, erectile dysfunction (ED) is closely related with ischemic heart disease. We should confirm that the cardiac condition of the ED patient is safe enough to perform sexual intercourse prior to beginning treatment for ED. Asymptomatic ischemic heart disease cannot be diagnosed only in an interview, but it's difficult to perform cardiac exercise tests on all patients complaining of ED. Therefore, screening methods to evaluate patients who should undergo exercise tests are needed. Sixty patients with erectile dysfunction participated in this study. Physical examinations, interviews, and color Doppler examinations were conducted. Chest X-rays and electrocardiograms of all patients in the resting position were obtained, as were electrocardiograms following exercise. Echocardiograms, treadmill test results, thallium exercise scintigrams, and coronary angiograms were obtained as required for diagnosis. Two patients were excluded because they had obvious arteriogenic ED due to perineal injury. Fifty-eight patients underwent Doppler evaluations of their cavernous arteries and heart exercise tests. Fourteen patients (24.1%) were diagnosed with ischemic heart disease. Although six of them had already been diagnosed with ischemic heart disease, eight were newly diagnosed by the exercise tests. Cardiovascular risk factors such as advanced age, hyperlipidemia, diabetes mellitus, hypertension, smoking, and obesity were not sufficient predictive factors. The mean peak systolic velocity of the patients without ischemic heart disease was 34.6 cm/s vs 22.0 cm/s in those with ischemic heart disease. Only 3.7% of patients whose peak systolic velocity in the cavernous artery was equal to or exceeded 35 cm/s had ischemic heart disease. On the other hand, 41.9% of patients with peak systolic velocity of less than 35 cm/s had ischemic heart disease. The sensitivity of peak systolic velocity against ischemic heart disease was 92.9%, and specificity was 59.1%. In ED patients, incidences of complications involving symptomatic or asymptomatic ischemic heart disease were found to be high. The peak systolic velocity in the cavernous artery is thought to be a useful predictive factor of ischemic heart disease in ED patients. When a patient reveals a peak systolic velocity of less than 35 cm/s, he should undergo heart exercise tests prior to treatment of ED.
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