Manetti C F, Zacà F, Bombardini T
Minerva Cardioangiol. 1989 Apr;37(4):193-200.
Duplex scanning of the extracranial carotid vessels is a highly reliable medical investigation for identifying atherosclerotic or other pathology in this vascular region. The introduction of this technique into hospital practice has posed the problem of when it is indicated. The present study has shown that almost half the examinations carried out (45.2%) were requested on the basis of what were defined as "general" symptoms (vertigo, lipothymia, migraine, etc.); this group showed a low prevalence of atheromatous plaques. 22.7% of the examinations were requested as a control in the presence of atherosclerosis in another vascular region (coronaries, arteries of the lower extremities, etc.) and in these patients the prevalence of carotid stenosis was high or very high. Patients examined subsequently to a neurological episode came to 15.3% of the total. There was a high prevalence of carotid atheromatous lesions. Numerous controls were requested in subjects with type 2A and 2B hyperlipoproteinaemia (6.7% of the total) with a prevalence of atheromatous lesions higher than the homogeneous-for-age group. A limited number of patients (2%) underwent the study following visual disturbances of presumable ischaemic origin. The prevalence of carotid stenoses in these subjects is high. Patients who underwent carotid TEA (8.1%) represent a special group in whom intervention brings a general improvement although the percentage of vessel restenosis exceeds 20%.
对颅外颈动脉进行双功扫描是一种用于识别该血管区域动脉粥样硬化或其他病变的高度可靠的医学检查方法。将这项技术引入医院实践引发了何时进行该项检查的问题。本研究表明，几乎一半（45.2%）的检查是基于被定义为“一般”的症状（眩晕、晕厥、偏头痛等）要求进行的；该组动脉粥样斑块的患病率较低。22.7%的检查是在其他血管区域（冠状动脉、下肢动脉等）存在动脉粥样硬化的情况下作为对照要求进行的，在这些患者中，颈动脉狭窄的患病率很高或非常高。在神经系统发作后接受检查的患者占总数的15.3%。颈动脉粥样病变的患病率很高。在患有2A和2B型高脂蛋白血症的受试者中要求进行了大量对照检查（占总数的6.7%），其动脉粥样病变的患病率高于同年龄组。少数患者（2%）在出现可能为缺血性起源的视觉障碍后接受了该项检查。这些受试者中颈动脉狭窄的患病率很高。接受颈动脉内膜剥脱术（8.1%）的患者是一个特殊群体，尽管血管再狭窄的百分比超过20%，但干预后总体情况有所改善。
