Journal of Capital Medical University ›› 2022, Vol. 43 ›› Issue (2): 305-310.doi: 10.3969/j.issn.1006-7795.2022.02.024

• Clinical Research • Previous Articles     Next Articles

The prognostic importance of left ventricular systolic function in patients with acute inferior ST-segment elevation myocardial infarction undergoing percutaneous coronary intervention

Sun Hao1, Zheng Meili1, Guo Zongsheng1, Zhang Zhiyong1, Li Xiaotao2*   

  1. 1. Department of Cardiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China;
    2. Department of Emergency, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China
  • Received:2021-10-04 Online:2022-04-21 Published:2022-04-14
  • Contact: *E-mail:15801095812@163.com

Abstract: Objective To study the impact of left ventricular (LV) systolic function on outcomes of patients with acute inferior ST-segment elevation myocardial infarction (STEMI) undergoing percutaneous coronary intervention (PCI). Methods Left ventricular ejection fraction (LVEF) was determined in 161 acute inferior STEMI patients undergoing PCI, who were divided into two groups according to LV systolic function: (1) LV systolic dysfunction group (LVEF<50%); (2) normal LV systolic function group (LVEF≥50%). Study primary endpoints included major adverse cardiac events (MACE) defined as the composite of cardiac death, myocardial infarction, and ischemia-driven revascularization, and stroke. Results There was no significant difference in age, gender, medical history, Killip grade and time of symptom onset between the two groups (P>0.05). The average number of disease vessels and thrombus burden were higher in LV systolic dysfunction group (P<0.05), other baseline angiographic and procedural characteristics in this study were similar between the two groups (P>0.05). During the 1-year follow-up, the incidence of MACE was similar between the two groups in this study (Log-rank P>0.05). Conclusion Among patients with acute inferior STEMI undergoing PCI, the incidence of clinical adverse events in patients with LV systolic dysfunction was similar to that in patients with normal LV systolic function during 1-year follow-up.

Key words: left ventricular ejection fraction, acute ST-segment elevation myocardial infarction, percutaneous coronary intervention

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