[Influencial factors for in-hospital patients with ST segment elevation myocardial infarction after emergency

Chenyang Chen1, Yiyuan Huang1, Shenghua Zhou1

  • 1Department of Cardiovascular Medicine, Second Xiangya Hospital, Central South University, Changsha 410011, China.

Insights

Emergency percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) shows a 22% adverse event rate. Key predictors for in-hospital cardiac events include hematocrit, NT-proBNP, Killip grade, TIMI flow, ST-segment resolution, and door-to-balloon time.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Acute Myocardial Infarction Management

Background:

  • Acute myocardial infarction (AMI) requires timely intervention.
  • Emergency percutaneous coronary intervention (PCI) is a critical treatment for ST-segment elevation myocardial infarction (STEMI).
  • Identifying prognostic factors is crucial for improving patient outcomes.

Purpose of the Study:

  • To analyze clinical outcomes of emergency PCI in AMI patients.
  • To identify risk factors predicting prognosis and in-hospital cardiac events.

Main Methods:

  • Retrospective analysis of 304 STEMI patients undergoing emergency PCI (2010-2014).
  • Patients categorized based on cardiovascular event occurrence.
  • Comparison of clinical factors between groups using t-tests and chi-squared analysis.
  • Logistic regression to identify predictors of in-hospital cardiac events.

Main Results:

  • The incidence of adverse events was 22% (67/304).
  • Statistically significant differences were observed in hematocrit (HCT), NT-proBNP, White Blood Cell count (WBC), age, Killip grade, TIMI flow post-PCI, arrhythmia, multi-vessel disease, ST-segment resolution, and door-to-balloon (D2B) time.
  • Logistic analysis identified HCT, NT-proBNP, Killip grade ≥2, TIMI flow ≤2, ST-segment resolution ≥50%, and long D2B time as significant predictors of in-hospital cardiac events.

Conclusions:

  • Hematocrit, NT-proBNP levels, Killip grade, post-PCI TIMI flow, ST-segment resolution, and D2B time are key predictors of in-hospital cardiac events in AMI patients undergoing emergency PCI.
  • Addressing these high-risk factors can potentially improve prognosis and reduce adverse events.
Abstract

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