Berkowitz H D
Arch Surg. 1980 Feb;115(2):190-3. doi: 10.1001/archsurg.1980.01380020056013.
The ocular pneumoplethysmography (OPG) attachment for the Life Sciences Pulse Volume Recorder (OPG-LS) is a widely distributed instrument, but no results have been published on its accuracy in diagnosing carotid artery lesions. One hundred twelve patients were studied with the OPG-LS using lateralizing criteria and a curve of ophthalmic artery systolic pressure (OAP) to brachial systolic pressure (BP) for normal carotid arteries, which served as a discriminant between normal and stenotic vessels. Two hundred nineteen carotid arteries were visualized on arteriography and percentage of diameter stenosis was measured. Lateralizing criteria by themselves gave poor diagnostic accuracy, but when combined with OAP-BP data, positive diagnosis was made for lesions having greater than 60% diameter stenosis in 89.6% of patients and 80.8% of arteries. False-positive results for 0% to 30% diameter stenotic lesions occurred in 11.1% of arteries and in 13.6% of patients.
用于生命科学脉搏容积记录器的眼体积描记法（OPG）附件（OPG-LS）是一种广泛使用的仪器，但尚未有关于其诊断颈动脉病变准确性的研究结果发表。使用OPG-LS对112例患者进行了研究，采用了定位标准以及正常颈动脉的眼动脉收缩压（OAP）与肱动脉收缩压（BP）的曲线，以此作为正常血管与狭窄血管之间的判别依据。对219条颈动脉进行了动脉造影，并测量了直径狭窄百分比。单独的定位标准诊断准确性较差，但与OAP-BP数据相结合时，对于直径狭窄大于60%的病变，在89.6%的患者和80.8%的动脉中做出了阳性诊断。直径狭窄0%至30%的病变出现假阳性结果，在11.1%的动脉和13.6%的患者中出现。
