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Modification of the mechanical cardiac performance during end-expiratory voluntary apnea recorded with ballistocardiography and seismocardiography.
Physiol Meas
November 2019
Department of Cardiology, Erasme Hospital, Université Libre de Bruxelles, Bruxelles, Belgium.
Objective: To assess if micro-accelerometers and gyroscopes may provide useful information for the detection of breathing disturbances in further studies.
Approach: Forty-three healthy volunteers performed a 10 s end-expiratory breath-hold, while ballistocardiograph (BCG) and seismocardiograph (SCG) determined changes in kinetic energy and its integral over time (iK, J · s). BCG measures overall body accelerations in response to blood mass ejection into the main vasculature at each cardiac cycle, while SCG records local chest wall vibrations generated beat-by-beat by myocardial activity.
An attempt has been made to validate the d-v-a modification of the direct body electromagnetic shin bar in the ballistocardiographic evaluation of cardiac function. Its essential mirror reflections of body movements recorded with Ulf have been amply illustrated. A plea is made for a resumption of interest in its wider clinical application within a rigid correlative framework.
View Article and Find Full Text PDF[Ballistocardiographic changes in Argentinian hemorrhagic viral disease].
Rev Asoc Med Argent
October 1965
Among eleven convalescent patients of Argentine hemorragic fever an electro-ballistocardiographic study was effected which led to the following conclusions: a) In 2 over 11 studied cases, electro-ballistocardiographic modifications of probable myocardial injury could be detected. b) The greatest percentage of the modifications was interpreted as normal variants of the electrocardiogram.
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