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Critical Reviews™ in Biomedical Engineering
SJR: 0.243 SNIP: 0.376 CiteScore™: 0.79

ISSN Print: 0278-940X
ISSN Online: 1943-619X

Critical Reviews™ in Biomedical Engineering

DOI: 10.1615/CritRevBiomedEng.v28.i12.250
pages 149-155

Spectral Information Changes in Obtaining Heart Rate Variability From Tachometer R-R Interval Signals

S. S. Abeysekera
School of Electrical and Electronic Engineering, Nanyang Technological University, Block S1, Nanyang Avenue, Singapore 639798
Udantha R. Abeyratne
School of Electrical and Electronics Engineering and Biomedical Engineering Research Center, Nanyang Technological University, Nanyang Avenue, Singapore 639798
S. B. Goh
School of Electrical and Electronic Engineering, Nanyang Technological University, Block S1, Nanyang Avenue, Singapore 639798

ABSTRACT

The spontaneous changes in the heartbeat provide valuable information regarding serious cardiac pathologies such as Sudden Cardiac Death. Subtle anomalies in the heart rate can be discovered via an analysis of the Heart Rate Variability (HRV) signal, a sequence of numbers representing the instantaneous heart rate over time. The HRV signal is commonly modeled by an integral pulse frequency modulation (IPFM) scheme. Based on the model, several techniques have been proposed in the literature to capture features of the HRV signal. They however, suffer from severe spurious peaks, especially when the HRV signals contain multiple spectral lines. In this paper, we propose a new method to minimize spurious spectral peaks via the technique of phase interpolation.


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