A New Approach for Analysis of Heart Rate Variability and QT Variability in Long-term ECG Recording
Overview
Authors
Affiliations
Background And Purpose: 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.
Methods: 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.
Results: 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.
Conclusion: 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.
A unique cardiac electrocardiographic 3D model. Toward interpretable AI diagnosis.
Rueda C, Rodriguez-Collado A, Fernandez I, Canedo C, Ugarte M, Larriba Y iScience. 2022; 25(12):105617.
PMID: 36465104 PMC: 9712771. DOI: 10.1016/j.isci.2022.105617.
Hajipour M, Baumann B, Azarbarzin A, Hirsch Allen A, Liu Y, Fels S J Clin Sleep Med. 2022; 19(2):225-242.
PMID: 36106591 PMC: 9892740. DOI: 10.5664/jcsm.10298.
Photoplethysmography-Based Respiratory Rate Estimation Algorithm for Health Monitoring Applications.
Iqbal T, Elahi A, Ganly S, Wijns W, Shahzad A J Med Biol Eng. 2022; 42(2):242-252.
PMID: 35535218 PMC: 9056464. DOI: 10.1007/s40846-022-00700-z.
Heart Rate Variability and Cardiovascular Fitness: What We Know so Far.
Souza H, Philbois S, Veiga A, Aguilar B Vasc Health Risk Manag. 2021; 17:701-711.
PMID: 34803382 PMC: 8598208. DOI: 10.2147/VHRM.S279322.
Wang J, Liu W, Chen H, Liu C, Wang M, Chen H Front Cardiovasc Med. 2021; 8:700943.
PMID: 34386531 PMC: 8354298. DOI: 10.3389/fcvm.2021.700943.