Prognostic Implications of Newly Developed T-Wave Inversion After Primary Percutaneous Coronary Intervention in Patients With ST-Segment Elevation Myocardial Infarction

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• 作者：Man-Jong Lee ; MD ; Ji-Hoon Jang ; MD ; Myung-Dong Lee ; MD ; Sung Woo Kwon ; MD ; Sung-Hee Shin ; PhD ; Sang-Don Park ; PhD ; ^{denki1@inha.ac.kr} ; Seong-Ill Woo ; PhD ; Dae-Hyeok Kim ; PhD ; Jun Kwan ; PhD ; Keum-Soo Park ; PhD
• 刊名：The American Journal of Cardiology
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：119
• 期：4
• 页码：515-519
• 全文大小：453 K
• 卷排序：119

文摘

We investigated the prognostic value of newly developed T-wave inversion after primary percutaneous coronary intervention (PCI) in patients with ST-segment elevation myocardial infarction. New T-wave inversion was defined as new onset of T-wave inversion after the primary PCI, without negative T waves on the presenting electrocardiogram. The primary end point was the occurrence of major adverse cardiac events (MACE), which consisted of cardiovascular mortality, nonfatal myocardial infarction, and rehospitalization for heart failure. A total of 271 patients were analyzed and followed up for 24 months in this study. New T-wave inversion was observed in 194 patients (72%), whereas the remaining 77 patients (28%) did not show T-wave inversion after the index PCI. Post-PCI Thrombolysis In Myocardial Infarction flow grade 2 or 3 was observed more frequently in patients with new T-wave inversion (97% vs 90%; p = 0.011). The cumulative MACE rate was significantly lower in patients with new T-wave inversion than in those without new T-wave inversion (8% vs 30%; odds ratio 0.197, 95% confidential interval 0.096 to 0.403; p <0.001). In multivariate Cox regression analysis, new T-wave inversion was an independent prognostic factor for MACE (hazard ratio 0.297, 95% confidential interval 0.144 to 0.611; p = 0.001). In conclusion, newly developed T-wave inversion after primary PCI was associated with favorable long-term outcome.