Ballistocardiogram During Muscular Relaxation with Succinylcholine

摘要

Ballistocardiograms were recorded on three subjects coupled to an ultralow frequency ballistocardiograph by shoulder straps and totally relaxed with succinylcholine. In two there was no change from the control record except for a loss of a few very high frequency waves and some diminution in the amplitudes of the I and J waves. In the third, the record became abnormal, principally because of severe depression of the J wave and accentuation of late systolic force; these abnormalities may have been consequent upon impaired cardiovascular function induced by positive pressure respiration. It was concluded that the normal subject lying quietly on a ballistocardiograph bed and coupled by mild restraints is as firmly linked to the table as if his muscles were completely relaxed. (Author)