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[Study on the prognostic factors related to interventional therapy in patients with acute myocardial infarction
1Department of Cardiology, the Second Hospital of Jilin University, Changchun 130041, China.
Insights
Prognostic factors for acute myocardial infarction (AMI) patients treated with venous-arterial extracorporeal membrane oxygenation (VA-ECMO) include elevated cardiac troponin I and B-type natriuretic peptide, reduced ejection fraction, and conditions like left main coronary artery disease and cardiac arrest.
Area of Science:
- Cardiology
- Intensive Care Medicine
- Biomedical Engineering
Context:
- Acute myocardial infarction (AMI) is a leading cause of cardiovascular mortality.
- Venous-arterial extracorporeal membrane oxygenation (VA-ECMO) provides critical hemodynamic support for severe AMI.
- Identifying prognostic factors is crucial for optimizing treatment strategies in AMI patients undergoing VA-ECMO.
Purpose:
- To investigate the prognostic factors influencing in-hospital survival in patients with AMI treated with VA-ECMO-assisted interventional therapy.
- To identify key clinical, laboratory, and procedural variables associated with outcomes in this high-risk patient population.
Summary:
- This retrospective cohort study analyzed 71 AMI patients who received VA-ECMO-assisted interventional therapy.
- Higher levels of cardiac troponin I and B-type natriuretic peptide, lower left ventricular ejection fraction, left main coronary artery disease, cardiac arrest, and delayed ECMO initiation (>24 hours) were associated with in-hospital mortality.
- Conversely, in-hospital survival was observed in patients with better cardiac function and fewer comorbidities.
Impact:
- Findings highlight critical indicators for predicting outcomes in AMI patients supported by VA-ECMO.
- This research can inform clinical decision-making, patient stratification, and the development of targeted interventions.
- Understanding these prognostic factors may lead to improved management and survival rates for patients with severe AMI requiring advanced circulatory support.
Abstract:
Objective: To investigate the prognostic factors in patients with acute myocardial infarction (AMI) who underwent interventional therapy assisted by venous-arterial extracorporeal membrane oxygenation (VA-ECMO). Methods: This single-center retrospective cohort study enrolled AMI patients who received VA-ECMO-assisted interventional therapy in the Department of Cardiology at the Second Hospital of Jilin University from June 2018 to November 2022. Patients were divided into the in-hospital survival group and in-hospital death group based on the in-hospital survival. Data on patient demographics, laboratory tests, imaging examinations, coronary angiography results, VA-ECMO-related parameters, complications, and prognosis were collected through the electronic medical record system. Results: A total of 71 AMI patients were enrolled, with an age of (62.4±11.1) years, of whom 54 (76%) were male. There were 46 patients in the in-hospital survival group and 25 patients in the in-hospital death group. Compared to the in-hospital survival group, the in-hospital death group exhibited significantly higher levels of cardiac troponin I (36.08 (2.86, 100.00) μg/L vs. 2.75 (0.18, 13.86) μg/L, P=0.01) and B-type natriuretic peptide (1 724.50 (50.00, 4 200.50) vs. 460.85 (163.80, 1 862.33), P=0.01), and the left ventricular ejection fraction was lower ((35.0±12.9)% vs. (43.0±12.8)%, P=0.01), moreover the incidence of patients with left main coronary artery disease (80% (20/25) vs. 39% (18/46), P<0.01), cardiac arrest (56% (14/25) vs. 20% (9/46), P<0.01), cardiopulmonary resuscitation (52%(13/25) vs. 26%(12/46), P=0.03), and the time from cardiac arrest to ECMO initiation >24 hours (84% (21/25) vs. 9% (4/46), P<0.01) were higher. Conclusions: The prognosis of AMI patients undergoing VA-ECMO-assisted interventional therapy may be influenced by a number of related factors, including cardiac troponin I, B-type natriuretic peptide levels, left ventricular ejection fraction, combined with left main coronary artery disease, cardiac arrest and cardiopulmonary resuscitation, and the interval between cardiac arrest and the initiation of ECMO.
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