彩色多普勒超声在老年脑梗死病中的临床应用

应用ＨＤＩ型超９彩色声像仪，观察４１例老年脑梗死患者和４８例无脑梗死老年人（对照组）两侧颈总动脉内膜－中层厚度、斑块情况，两侧颈动脉和椎动脉颅外段内径、血流动力学改变。结果发现：（１）脑梗死组颈总动脉主干与分叉处内膜－中层厚度较对照组明显增厚，发现粥样硬化斑块３２例，占７８．０％；（２）脑梗死组颈总动脉、颈内动脉内径明显增宽；脑梗死组颈动脉和椎动脉颅外段舒张期末流速值、最高流速平均值较对照组明显降低；反映外周阻力的搏动指数、阻力指数，脑梗死组明显高于对照组。结果表明：老年脑梗死与颈动脉、椎动脉粥样硬化有关；颈动脉软斑块是可能发生潜在老年脑梗死的原因之一。

Clinical Application of Color Doppler Ultrasonography in Aged Patients with Hemispheric Infarction

The intimal-medial thickness and plaques of double side arteriae carotis communis, and the bore as well as the hemodynamics of carotid and vertebral arteries in 41 aged patients with and 48 without hemispheric infarction were studied by using HDI color Dopple ultrasound. The rresults indicated: (1)The intimal-medial thickness of carotid thickened in the position of trunk and its tributaries thickened in aged patients-with hemispheric infarction as compared with those in the controls. Atherosclerotic plaques of carotid arteris occurred in 32 cases (32/41, 78. 0 % ). (2) Compared with controls, the bore of arteriae carotis communis and arteriae carotis interna widened significantly, and the end-diastolic velocity (EDV) and the time average velocity (Vmean) were evidently decreased and the resistive index (RI) as well as pulsatility index (PI) increased in carotid and vertedral arteries. The results showed that the atherosclerosis of carotid and vertedral arterise was related to the incidence of hemispheric infarction. The soft plaques in carotid arteris might be one of the potential causes for hemispheric infarction.