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(Circulation. 1951;3:663.)
© 1951 American Heart Association, Inc.

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Studies Utilizing the Portable Electromagnetic Ballistocardiograph

I. Abnormal HIJK Patterns in Hypertensive and Coronary Artery Heart Disease

HARRY MANDELBAUM M.D.¹ ROBERT A. MANDELBAUM M.D.¹

¹ From the Department of Medicine, The Jewish Hospital of Brooklyn, N. Y.

A practical method of ballistocardiography, easily adaptable to routine office use, is described. The instrument utilized is a portable electromagnetic ballistocardiograph which records the body movements directly. One hundred normal subjects of all ages were first studied by this method. Observations upon the ballistocardiographic findings in patients with hypertensive and coronary artery heart disease are recorded; particular emphasis is placed upon a specific abnormality in the HIJK complex in the ballistocardiograms of many of these subjects.

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