| 英文摘要 |
Little is known about patients with left circumflex artery (LCX) infarct-related acute myocardial infarction (AMI) and how it compares with left anterior descending artery (LAD) and right coronary artery (RCA) AMI. The clinical features and effects of patients with LCX, LAD, and RCA infarct-related AMI may be different. The data for this study were collected in an 840-bed hospital in Taiwan. Consecutive adult patients (> 18 years) visiting the Emergency Department between August 2004 and March 2010 were enrolled if they satisfied the criteria of acute myocardial infarction and underwent primary percutaneous coronary intervention. The 222 patients enrolled were divided into three infarct-related artery groups: 55 in LCX, 94 in LAD, and 71 in RCA. Thirty-day mortality, readmission < 1 year, and death < 1 year were the primary endpoints. Age, gender, body mass index, and risk factors for coronary artery disease in the three groups were not significantly different. Patients in the LCX group had fewer dyspnea symptoms (P = 0.045) and ST-segment change (P < 0.001), but significantly different door-to-diagnosis (P < 0.001) and door-to-balloon (P = 0.015) delay time. There were no differences in thirty-day mortality, readmission rate < 1 year, or death rate < 1 year between the three groups. We found that patients in the LCX group had fewer dyspnea symptoms and ST-segment changes than those in the LAD and RCA groups, which might cause a delayed diagnosis and treatment. However, outcomes were not significantly different between the groups. |
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