Detecting Preload Changes Using Seismocardiography

Seismocardiography (SCG) is a non-invasive tool that utilizes the chest wall vibrations from the beating heart to measure cardiac movements through a highly sensitive accelerometer. SCG offers continuous measurement of cardiac function that could be utilized for monitoring, diagnostic assessments, and prognostic health checks. The aim of this study was to investigate if the SCG could detect an increase in preload by intravenous saline infusion. Twenty-six subjects were included in this study, sixteen with cardiac disease and ten healthy subjects without known cardiac disease. Post infusion the diastolic SCG amplitudes D d increased 27% (p=.016), E d increased 48% (p =