Key result
24-hour ECG frequency domain HRV measures show excellent day-to-day reproducibility in post-MI patients.
Why the study?
Are frequency domain measures of heart period variability reproducible over time in patients with previous myocardial infarction and ventricular arrhythmias?
Observational (n=80)
Are frequency domain measures of heart period variability reproducible over time in patients with previous myocardial infarction and ventricular arrhythmias?
Heart period variability measurements are highly reproducible day-to-day in patients with previous myocardial infarction and ventricular arrhythmias, facilitating the distinction of real disease progression or drug effects from random variation.
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Supports serial HRV monitoring in post-MI patients with arrhythmias; extends reproducibility data from healthy subjects to this population.
Bigger et al. (1992) conducted an observational in Previous myocardial infarction and ventricular arrhythmias (n=80). Two 24-hour continuous electrocardiographic recordings was evaluated on Reproducibility of frequency domain measures of heart period variability. Frequency domain measures of heart period variability from 24-hour electrocardiographic recordings demonstrated excellent day-to-day reproducibility in patients with previous myocardial infarction.