Intracoronary ultrasound analysis of coronary artery remodeling in patients with acute myocardial infarction / 中华超声影像学杂志

ABSTRACT

Objective To invastigate the presence of coronary artery remodeling in acute myocardial infarction(AMI)patients by intracoronary ultrasound(ICUS). Methods Before percutaneous coronary intervention(PCI),sixty five AMI patients were divided into two groups according to two types of arterial remodeling by ICUS.Emergency PCI group had 28 patients and delayed PCI group had 37 patients.Positive remodeling(PR) or negative remodeling(NR)was considered present when the vessel cross sectional area at the lesion site was larger than the proximal cross sectional area or smaller than the distal cross sectional area, respectively. Results Twenty nine patients( 44.6 %) showed PR and 36( 55.4 %)showed NR. Incidence of essential hypertension was higher in NR patients than that in PR ones among risk factors of coronary artery disease.Soft plaques( 83.1 %)(Va+Vb stage lesion in paticular) were main lesions in two type of remodelings and eccentric plaque more common in PR patients( 93.1 % vs 63.8 %,P