Title |
A new approach for analysis of heart rate variability and QT variability in long-term ECG recording
|
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Published in |
BioMedical Engineering OnLine, May 2018
|
DOI | 10.1186/s12938-018-0490-8 |
Pubmed ID | |
Authors |
Hau-Tieng Wu, Elsayed Z. Soliman |
Abstract |
With the emergence of long-term electrocardiogram (ECG) recordings that extend several days beyond the typical 24-48 h, the development of new tools to measure heart rate variability (HRV) and QT variability is needed to utilize the full potential of such extra-long-term ECG recordings. In this report, we propose a new nonlinear time-frequency analysis approach, the concentration of frequency and time (ConceFT), to study the HRV QT variability from extra-long-term ECG recordings. This approach is a generalization of Short Time Fourier Transform and Continuous Wavelet Transform approaches. As proof of concept, we used 14-day ECG recordings to show that the ConceFT provides a sharpened and stabilized spectrogram by taking the phase information of the time series and the multitaper technique into account. The ConceFT has the potential to provide a sharpened and stabilized spectrogram for the heart rate variability and QT variability in 14-day ECG recordings. |
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