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(Circulation. 1957;16:43.)
© 1957 American Heart Association, Inc.

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Wide Frequency Range Force Ballistocardiogram

Its Correlation with Cardiovascular Dynamics

T. J. REEVES M.D.¹; L. L. HEFNER M.D.¹; W. B. JONES M.D.¹; J. E. SPARKS M.D.¹

¹ From the Department of Medicine, Medical College of Alabama, Birmingham, Alabama, and the Veterans Administration Hospital, Birmingham, Ala.

The ballistocardiograms of young normal subjects as recorded with a wide frequency range technic are described. These records contain high frequency forces not previously described. An analysis of these components in terms of known cardiovascular events strongly suggests that they have definite dynamic significance. In addition, these correlations offer evidence as to the genesis of some forces in the ballistocardiogram.