Abstract 13373: Patterns of OCT Detected Stent Complications are Different between Acute Myocardial Infarction and Stable Angina
Background: The incidence and patterns of OCT detected acute stent complications have not yet been compared between patients with acute myocardial infarction (AMI) and those with stable angina pectoris (SAP).
Aim: The aims of this study were 1) to evaluate and compare the incidence of acute stent complications in AMI to those with SAP, and 2) to compare the morphologic differences of OCT-detected acute complications between AMI and SAP.
Methods and Results: A total of 404 patients (115 AMI, 289 SAP) who had OCT after successful stenting were included in this study. The incidence of each stent complication was listed in Table. Patients with AMI showed higher incidence of irregular protrusion and thrombus. In contrast, SAP patients had higher incidence of instent dissection and fibrous disruption. The incidence and length of stent edge dissection were similar between the two groups. Although the incidence of incomplete stent apposition was similar, the number of malapposed strut per lesion and the distance between strut and vessel wall were greater in AMI than in SAP (9 vs 5 struts, P=0.046 and 0.51 vs 0.41 mm, P=0.016).
Conclusions: The patterns of OCT detected stent complications were different between patients with AMI vs SAP. These differences may explain the different rates of restenosis and stent thrombosis between the two groups.
Author Disclosures: T. Soeda: None. Y. Jang: None. S. Park: None. S. Lee: None. S. Choi: None. T. Itoh: None. H. Jia: None. H. Lee: None. B. Yu: None. S. Uemura: None. Y. Saito: None. I. Jang: None.
- © 2014 by American Heart Association, Inc.