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[Relation between 1-year mortality after acute myocardial infarction and left ventricular ejection function estimated
J Launbjerg1, J Berning, P Fruergaard
1Medicinsk afdeling B, Centralsygehuset Hillerød.
Ugeskrift for Laeger
|May 4, 1992
Summary
Early echocardiography assessing left ventricular wall motion (wall motion index, WMI) effectively predicts one-year mortality after acute myocardial infarction, identifying low-risk patients with good prognoses.
Area of Science:
- Cardiology
- Echocardiography
- Myocardial Infarction
Context:
- Assessing left ventricular pump function is crucial for predicting outcomes after acute myocardial infarction.
- Early determination of ventricular wall motion provides valuable prognostic information.
Purpose:
- To characterize left ventricular pump function using early echocardiographic wall motion index (WMI) in patients with acute myocardial infarction.
- To correlate WMI with one-year mortality and identify distinct risk groups.
Summary:
- A study of 195 acute myocardial infarction patients found WMI strongly predicted one-year mortality, with mortality rates of 2% (low risk), 34% (middle risk), and 37% (high risk).
- Previous infarcts, anterior infarct localization, and female sex were associated with lower WMI and higher mortality.
- Patients classified as low risk by WMI alone demonstrated excellent prognoses, irrespective of other factors.
Impact:
- WMI is a powerful, early predictor of one-year mortality following acute myocardial infarction.
- Risk stratification based on WMI can guide patient management and prognostication.
- This echocardiographic parameter offers a reliable method for assessing cardiac function post-infarction.