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Serious infection after acute myocardial infarction: incidence, clinical features, and outcomes

Adriano A M Truffa1, Christopher B Granger, Kyle R White

  • 1Duke Clinical Research Institute and the Department of Medicine, Duke University Medical Center, 2400 Pratt Street, Durham, NC 27705, USA.

JACC. Cardiovascular Interventions
|July 21, 2012
PubMed
Abstract

Insights

Serious infections in ST-segment elevation myocardial infarction (STEMI) patients are uncommon but significantly increase the risk of death or death/myocardial infarction within 90 days. Early identification and infection prevention strategies are crucial.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Clinical Research

Background:

  • Limited understanding of infection characteristics and outcomes in ST-segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention.
  • Need for data on infection incidence, causes, and impact on patient prognosis post-STEMI treatment.

Purpose of the Study:

  • To investigate the incidence, characteristics, and clinical outcomes of serious infections in STEMI patients from the APEX-AMI trial.
  • To assess the association between serious infections and 90-day mortality or the composite endpoint of death/myocardial infarction.

Main Methods:

  • Analysis of 5,745 STEMI patients from the APEX-AMI trial database.
  • Detailed collection and description of infection data, including organism and location.
  • Cox proportional hazards models used to evaluate 90-day outcomes, adjusting for clinical variables and treating infection as a time-dependent covariate.

Main Results:

  • Serious infections occurred in 2.4% of patients, primarily bloodstream infections caused by Staphylococcus aureus.
  • Patients with infections had more comorbidities and lower procedural success rates.
  • Serious infection was significantly associated with increased 90-day mortality (aHR 5.6) and death/MI (aHR 4.9).

Conclusions:

  • Infections are infrequent but severely impact 90-day outcomes in STEMI patients.
  • Highlights the need for early identification of high-risk patients and development of infection-reducing strategies.

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