Title
Wearable seismocardiography for the beat-to-beat assessment of cardiac intervals during sleep.
Abstract
Seismocardiogram (SCG) can be detected during sleep by a textile-based wearable system. This pilot study preliminarily explores the feasibility of a beat-to-beat estimation of cardiac mechanical features (RR interval, RRI, Pre-Ejection Period, PEP, Isovolumic Contraction Time, ICT, Left Ventricular Ejection Time, LVET, Isovolumic Relaxation Time, IRT) from the joint ECG and SCG assessment during sleep. The analysis of two 30-min sleep data segments from one healthy subject, indicated that 1) respiration largely influence the dynamics of most of the parameters; 2) variability of cardiac intervals is only marginally influenced by the RRI variability; 3) appreciable spectral power at frequencies ≤ 0.1 is only observed in the RRI spectrum and not in the spectra of the other indexes; 4) IRT has a broadband variability, that is clearly different from the dynamics of the other indexes. These findings represent the very first description of the beat-to-beat variability of cardiac mechanical indexes. Further investigations on a larger population are in progress to confirm the present results.
Year
DOI
Venue
2014
10.1109/EMBC.2014.6945018
EMBC
Keywords
Field
DocType
isovolumic relaxation time,electrocardiography,biomechanics,seismocardiogram,rri variability,wearable seismocardiography,cardiac mechanical indexes,cardiac intervals,biomedical measurement,sleep,broadband variability,pre-ejection period,rri spectrum,isovolumic contraction time,left ventricular ejection time,textile-based wearable system,beat-to-beat assessment,beat-to-beat estimation,cardiac mechanical features,rr interval
Computer science,Wearable computer,Electronic engineering,Beat (music)
Conference
Volume
ISSN
Citations 
2014
1557-170X
1
PageRank 
References 
Authors
0.48
0
8
Name
Order
Citations
PageRank
Marco Di Rienzo18411.14
Emanuele Vaini24012.50
Paolo Castiglioni3347.03
Prospero Lombardi421.64
Gianfranco Parati5255.99
Carolina Lombardi6194.18
Paolo Meriggi7326.11
F. RIZZO8798.79