Key result
Rescaling tachograms to a standard heart rate of 75 bpm reduced the variance of heart rate variability and turbulence measures by 20% to 40%.
Why the study?
Does re-scaling tachograms to adjust for average heart rate and VPC count reduce the variance of HRV and HRT measures in patients with ambulatory ECG recordings?
Population
744 patients in the Cardiac Arrhythmia Suppression Trial with qualifying ambulatory ECG recordings
Comparison
Re-scaling tachograms of heart-beat intervals to… vs Standard (unadjusted) HRV and HRT measures
Design
Cohort
Authors
Loading...
Rescaling may reduce variance in HRV/HRT measures; leaves open whether adjusted indices improve arrhythmic risk stratification.
Observational (n=744)
Does re-scaling tachograms to adjust for average heart rate and VPC count reduce the variance of HRV and HRT measures in patients with ambulatory ECG recordings?
Adjusting for underlying heart rate and VPC count reduces the variance of ambulatory ECG measures, potentially improving their utility for arrhythmic risk stratification.
Hallstrom et al. (2004) conducted an observational in Cardiac Arrhythmia (n=744). Rescaled tachograms of heart-beat intervals (HR of 75) and adjusted turbulence slope vs. Standard HRV and HRT measures was evaluated on Variance and correlations of HRV and HRT measures. Rescaling tachograms to a standard heart rate of 75 bpm reduced the variance of heart rate variability and turbulence measures by 20% to 40%.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: