Why the study?
Does the use of 4th order central moments accurately estimate respiratory signals from a single-lead ECG compared to other approaches?
Does the use of 4th order central moments accurately estimate respiratory signals from a single-lead ECG compared to other approaches?
A novel method using 4th order central moments can estimate respiratory signals from a single-lead ECG, which may be useful for monitoring vital signs during MRI without additional equipment.
EDR from single-lead ECG may enable respiration monitoring during MRI without extra sensors; leaves open prospective clinical validation.
For a variety of clinical applications like magnetic resonance imaging (MRI) the monitoring of vital signs is a common standard in clinical daily routine. Besides the electrocardiogram (ECG), the respiratory activity is an important vital parameter and might reveal pathological changes. Thoracic movement and the resulting impedance change between ECG electrodes enable the estimation of the respiratory signal from the ECG. This ECG-derived respiration (EDR) can be used to calculate the breathing rate without the need for additional devices or monitoring modules. In this paper a new method is presented to estimate the respiratory signal from a single-lead ECG. The 4th order central moments was used to estimate the EDR signal exploiting the change of the R-wave slopes induced by respiration. This method was compared with two approaches by analyzing the Fantasia database from www.physionet.org . Furthermore, the ECG signals of 24 healthy subjects placed in an 3 T MR-scanner were acquired.
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Schmidt et al. (2015) studied this question.
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