Key result
Left atrial enlargement above 44 mm was an independent predictor of poor outcome, associated with a 5-fold increased relative risk of cardiac death and heart failure exacerbation after MI.
Why the study?
Does left atrial enlargement predict mortality and heart failure exacerbation in patients after myocardial infarction?
Population
60 patients after myocardial infarction, mean age 60 +/- 11, 44 male.
Comparison
Transthoracic echocardiography assessing left… vs Patients without left atrial enlargement or with…
Design
Cohort
Follow-up
18 months and 3 years
Authors
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LA enlargement >44 mm may refine post-MI risk stratification; leaves open incremental value over existing scores in prospective cohorts.
Cohort (n=60)
Does left atrial enlargement predict mortality and heart failure exacerbation in patients after myocardial infarction?
Relative Risk: 5
Enlarged left atrium (>44 mm) is a strong, independent echocardiographic predictor of mortality and heart failure exacerbation in patients following myocardial infarction.
Wierzbowska‐Drabik et al. (2007) conducted a cohort in Myocardial infarction (n=60). Left atrial enlargement above 44 mm vs. Left atrium ≤ 44 mm was evaluated on Combined end points (cardiac deaths and heart failure exacerbation) (RR 5.0). Left atrial enlargement above 44 mm was an independent predictor of poor outcome, associated with a 5-fold increased relative risk of cardiac death and heart failure exacerbation after MI.
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