Ballistocardiographic Spectrum Studies with a Tilt Table

摘要

The purpose of this preliminary work is to study the effect of a tilt table test procedure on ballistocardiographic (BCG) signal by using Electromechanical Film (EMFi) sensors. The ECG, BCG, carotid pulse (CP) from the neck near the carotid artery and ankle pulse signals were recorded from 7 persons. The spectral and temporal components of the recordings during the tilt table test were studied.The spectral and temporal properties of BCG signal changed due to the tilt test, change in amplitude levels of the systolic BCG components and in spectral domain. Blood pressure values and pulse changed due to the tilt test. This was also seen in the changed aortic pulse wave velocity (PWV) values. According to this study, BCG measurements combined with a tilt test can be used as a very simple non-invasive method in hemodynamic studies.