Key result
A novel fiber Bragg grating pulse probe was developed to successfully acquire real-time beat-to-beat carotid arterial pulse waveforms and evaluate vital cardiovascular parameters in 55 subjects.
A novel fiber Bragg grating pulse probe can noninvasively acquire carotid arterial pulse waveforms to evaluate key cardiovascular parameters.
May enable non-invasive carotid pulse monitoring; leaves open clinical translation pending larger validation studies.
Arterial pulse is an established source of information for the clinical assessment of cardiovascular health. The central aortic pressure is known to be a better predictor of cardiovascular status than the peripheral pressure. The carotid arterial pulse is considered to be the best indicator of the central aortic pressure. The present work deals with the development of a novel noninvasive probe based on fiber Bragg grating (FBG) sensor for the real-time acquisition of the pulse waveform in the carotid arterial site. The fiber Bragg grating pulse probe (FBGPP) developed is used to obtain the carotid arterial pulse waveform (CAPW) of individual subjects, in the form of beat-to-beat carotid pulse. The FBGPP developed comprises of an elastic rubber diaphragm that comes into contact with the skin below, which the carotid artery is pulsating, creating strain variations over it. Effectively, the carotid arterial pulse is tranduced into the strain variations over a rubber diaphragm, which is acquired by the FBG sensor bonded over it. The FBGPP is designed such that the positioning and the access for the device to the carotid arterial site can be carried out with ease. Furthermore, the recorded CAPW is subjected to the pulse wave analysis in order to evaluate vital cardiovascular parameters like heart rate, left ventricular ejection time, carotid augmentation index, and ejection duration index, which are indicators of the cardiac health of the subject and the performance of the heart. Also, the linearity between these cardiovascular parameters is explored for a sample size of 55.
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Padma et al. (2017) studied this question. Fiber Bragg grating pulse probe (FBGPP) was evaluated on Linearity between cardiovascular parameters (heart rate, left ventricular ejection time, carotid augmentation index, and ejection duration index). A novel fiber Bragg grating pulse probe was developed to successfully acquire real-time beat-to-beat carotid arterial pulse waveforms and evaluate vital cardiovascular parameters in 55 subjects.
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