Intravascular Ultrasonic Features of Unstable Atherosclerotic Plaques in Unstable Angina patients

VernacularTitle:不稳定型心绞痛患者冠脉血管内斑块的超声影像特征
Author: Song LI ; Hui LIN ; Donghui ZHANG ; Xiaoyang PEI ; Jiheng YANG ; Xuesong HU ; Xinxia ZHANG
Publication Type:Journal Article
Keywords: Angina pecloris,Variant; Ultrasonophy,Interventional
From: Chinese Journal of Primary Medicine and Pharmacy 2010;17(23):3189-3191
CountryChina
Language:Chinese
Abstract: Objective To investigate the characteristics of plaque morphology of the patients with unstable angina(UA)by intravascular ultrasound(IVUS). Methods24 patients with stable angina pectoris(SA)and 33 patients with unstable angina(UA)were examined by coronary coronary arteriograph(CAG)and intravascular ultrasound(IVUS).The culprit lesions about the characteristic of the plaque were studied,the external elastic membrane cross-sectional area and lumen cross-sectional area were measured,the plaque area,plaque burden,eccentricity index were calculated,and the remodeling index was examined. ResultsExternal elastic membrane area,plaque area and vascular remodeling ratio were significantly greater at target lesions in UA patients than in patients with SA(P＜0.05).Positive remodeling and soft plaque were predominantly in UA patients(P＜0.05). ConclusionThe morphological features of coronary artery plaques in UA group were significantly different from those in SA group.More soft plaque,plaque rupture,thrombus formation,and positive remodeling were found in UA patients compared with SA patients.