Studies Utilizing the Portable Electromagnetic Ballistocardiograph

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Abstract
The ballistocardiograph records the vigor of cardiac ejection and the speed of diastolic filling. It provides a practical means of studying the physiologic response of the heart in its adjustment to the stress of exercise. The application of the light ballistocardiographic exercise test to subjects without clinical or electrocardiographic evidence of heart disease, to hypertensive subjects, to patients with coronary artery disease and to those suspected of having myocarditis has provided information of clinical importance which cannot be obtained from any other means of physical diagnosis or from the ballistocardiogram at rest.