Key result
A QRS score ≥6 was less accurate than an ejection fraction <40% in predicting 6-12 month mortality among hospital survivors of myocardial infarction (sensitivity 64% vs 73%, specificity 56% vs 73%).
Why the study?
Does a QRS scoring system accurately estimate left ventricular ejection fraction and predict mortality in hospital survivors of myocardial infarction compared to radionuclide ventriculography?
Cohort (n=285)
Does a QRS scoring system accurately estimate left ventricular ejection fraction and predict mortality in hospital survivors of myocardial infarction compared to radionuclide ventriculography?
The QRS score is of little value in estimating ejection fraction and is less accurate than ejection fraction in predicting late survival in hospital survivors of myocardial infarction.
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QRS score should not supplant EF for post-MI risk stratification; leaves open whether refined ECG metrics add value in contemporary cohorts.
Brower et al. (1985) conducted a cohort in Myocardial infarction (n=285). QRS scoring system (QRS score ≥6) vs. Ejection fraction (EF <40%) was evaluated on Mortality. A QRS score ≥6 was less accurate than an ejection fraction <40% in predicting 6-12 month mortality among hospital survivors of myocardial infarction (sensitivity 64% vs 73%, specificity 56% vs 73%).
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