alexa Dynamic infusion cavernosometry and cavernosography (DICC) in the evaluation of vasculogenic impotence.
Medicine

Medicine

Translational Medicine

Author(s): Chen KK, Chen MT, Lo KY, Chang LS

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Abstract BACKGROUND: This study was conducted to find more accurate physiological assessment of the penile vascular status in impotent patients. METHODS: Twenty-two males, aged 25-76 years (mean 54.0 years) with possible underlying vascular causes of impotence, had dynamic infusion cavernosometry and cavernosography (DICC) examination to ascertain the arterial and/or venous insufficiency in the penis. Prostaglandin E1 20 micrograms was injected intracavernously in this 4-phase study. RESULTS: No side effect or complication was noted during or after the examination in all 22 patients. During the phase 1 test, the mean resting intracavernous pressure (ICP) was 6.8 +/- 3.6 mmHg and the mean plateau ICP after PGE1 injection was 47.2 +/- 23.9 mmHg. The mean ratio of plateau ICP to mean arterial pressure was 50.2 +/- 23.4\%. In the phase 2, the mean ICP determined 30 seconds after cessation of saline infusion without and with perineal compression was 65.3 +/- 26.8 mmHg and 129.1 +/- 26.2 mmHg, respectively. The mean ICP decay from 150 mmHg was 84.7 +/- 26.8 mmHg. The mean systolic pressure of each cavernous artery, 87.6 +/- 18.9 mmHg and 93.6 +/- 17.6 mmHg in left and right side, respectively, was found during phase 3 evaluation. The mean ratio of systolic pressure of each cavernous artery to brachial artery (cavernous-brachial index, CBI) was 70.1 +/- 12.7\% and 75.1 +/- 11.5\% in left and right side, respectively. Six patients with CBI greater than 75\% had normal Doppler duplex sonography (diameter of cavernous artery greater than 0.9 mm and peak flow velocity greater than 25 cm/sec). Cavernosography in phase 4 evaluation showed venous leakage in 20 of 22 patients (90.9\%) with ICP decay greater than 60 mmHg. Two patients with ICP decay less than 45 mmHg were found to have no venous leakage. CONCLUSIONS: The cavernous-brachial index is usually less than 75\% in penile arterial insufficiency. The patients with ICP decay from 150 mmHg greater than 60 mmHg would have penile venous leakage demonstrated in the cavernosography. The results of cavernosometry are highly correlated with cavernosography. Our results suggest that DICC may provide a good examination for more physiological assessment and accurate diagnosis of vasculogenic impotence.
This article was published in Zhonghua Yi Xue Za Zhi (Taipei) and referenced in Translational Medicine

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