Forconi S, Johnston K W
Department of Surgery, University of Toronto, Ontario, Canada.
J Cardiovasc Surg (Torino). 1987 Nov-Dec;28(6):715-8.
In order to determine the effect of a hemodynamically significant contralateral stenosis on the results of a carotid Doppler study, 333 continuous wave Doppler spectral analysis studies were compared to angiography. For most grades of stenoses, both the peak frequency and the spectral broadening index were increased in the group of patients with contralateral carotid arterial stenoses greater than 50% by comparison with the group with less severe stenoses. Using receiver operating characteristic curves, the diagnostic accuracy was found to be slightly reduced by the presence of significant contralateral disease. Hence, when interpreting the results of carotid Doppler examinations, the presence or absence of a hemodynamically significant contralateral stenosis should be considered in determining the likelihood that an ipsilateral stenosis is present and in evaluating its severity.
为了确定血流动力学上有意义的对侧狭窄对颈动脉多普勒研究结果的影响，对333项连续波多普勒频谱分析研究与血管造影进行了比较。对于大多数狭窄程度，与狭窄程度较轻的组相比，对侧颈动脉狭窄大于50%的患者组的峰值频率和频谱增宽指数均增加。使用受试者工作特征曲线发现，存在明显的对侧疾病会使诊断准确性略有降低。因此，在解释颈动脉多普勒检查结果时，在确定同侧狭窄存在的可能性以及评估其严重程度时，应考虑是否存在血流动力学上有意义的对侧狭窄。
