Key result
Higher preoperative ventricular rate on ECG predicts ~34% greater long-term mortality after CABG.
Why the study?
Do preoperative quantitative ECG measures predict long-term mortality in patients undergoing isolated coronary artery bypass grafting?
Cohort (n=8,166)
Do preoperative quantitative ECG measures predict long-term mortality in patients undergoing isolated coronary artery bypass grafting?
Hazard Ratio: 1.34 (95% CI 1.21–1.5)
p-value: p=<0.0001
Preoperative quantitative ECG measures of left ventricular rate, mass, and repolarization are powerful independent predictors of long-term mortality in patients undergoing isolated coronary artery bypass grafting.
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May aid preoperative risk stratification in isolated CABG; leaves open prospective validation and intervention trials.
Lauer et al. (2007) conducted a cohort in Severe coronary artery disease requiring CABG (n=8,166). Preoperative quantitative electrocardiography (e.g., ventricular rate 90 bpm) vs. Lower baseline ECG measures (e.g., ventricular rate 60 bpm) was evaluated on Death (HR 1.34, 95% CI 1.21-1.50, p=<0.0001). Preoperative quantitative ECG measures, including higher ventricular rate (HR 1.34; 95% CI 1.21-1.50), independently predicted long-term mortality after isolated coronary artery bypass grafting.
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