24h seismocardiogram monitoring in ambulant subjects

Sternal seismocardiogram (SCG) is the assessment of microvibrations produced by the beating heart as detected by an accelerometer positioned on the sternum. This signal reflects mechanical events of the heart contraction, including the opening and closure of mitral and aortic valves and maximal bloo...

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Bibliographic Details
Main Authors: Di Rienzo, M., Meriggi, P., Vaini, E., Castiglioni, P., Rizzo, F.
Format: Conference Proceeding
Language:English
Subjects:
Acceleration
Electrocardiography
Heart
Laboratories
Monitoring
Motion segmentation
Online Access:Request full text
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Summary:Sternal seismocardiogram (SCG) is the assessment of microvibrations produced by the beating heart as detected by an accelerometer positioned on the sternum. This signal reflects mechanical events of the heart contraction, including the opening and closure of mitral and aortic valves and maximal blood flow acceleration. Traditionally, SCG has been detected in a laboratory setting with the subject lying at rest in supine position. Aims of this study were 1) to investigate the feasibility of a SCG monitoring over the 24 hours in ambulant subjects, and 2) to calculate number and time distribution of the SCG estimates obtainable over the 24 hours. In 5 healthy subjects ECG, respiration, body accelerations and sternal SCG were recorded for 24 hours in a workday by a smart garment recently developed in our laboratory, the MagIC-SCG system. Each recording was split into a series of contiguous 5-s data segments and SCG was estimated in each segment where the magnitude of the acceleration vector was
ISSN:1094-687X
1558-4615
2694-0604
DOI:10.1109/EMBC.2012.6347128