冠心病患者颈动脉粥样硬化和肱动脉舒张功能的超声检测

目的探讨冠心病患者颈动脉粥样硬化情况和肱动脉内皮依赖性舒张功能的变化以及外周血管超声预测冠心病的临床价值。方法采用高分辨率超声测定132例受试者颈动脉内中膜厚度和斑块积分及肱动脉内皮依赖性舒张功能。结果冠心病组颈动脉内中膜厚度明显大于对照组(0.87±0.16)mmvs(0.72±0.13)mm,P<0.01]。冠心病组斑块发生率明显高于对照组。冠心病多支病变组mIMTc较单支病变组明显增厚(0.99±0.17)mmvs(0.85±0.15)mm,P<0.01],其斑块积分也较单支病变组高。在93例接受冠脉造影检查的患者中,有47例阳性的冠心病患者以mIMTc≥0.85mm预测冠心病的有无,其敏感性为72.3%,特异性为76.1%,总符合率74.2%(69/93)。冠心病患者肱动脉内皮依赖性舒张功能明显低于对照组(6.21±1.92)%vs(9.04±3.03)%,P<0.01],132例受试者颈动脉内中膜厚度与肱动脉内皮依赖性舒张功能呈负相关,而在冠心病患者中两者无相关性。结论颈动脉粥样硬化程度可间接反映冠状动脉病变的程度。冠心病患者存在肱动脉内皮依赖性舒张功能的受损和颈动脉內中膜厚度的增厚。

Ultrasound detection for carotid atherosclerosclerosis and brachial artery flow mediated vasodilation in patients with coronary heart disease

Objective To investigate the carotid atherosclerosis(the intima-media thickness on carotid artery and plaques)and the brachial artery flow-mediated dilation(FMD)in patients with coronary heart disease(CHD)and evaluate the relation between CHD and carotid atherosclerosis.Methods Intima-media thickness(IMT)and plaques in the carotid arteries were assessed with high-resolution B-mode ultrasonography and the brachial artery FMD were measured in 86 patients with coronary heart disease and 46 healthy control subj...