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(Chest. 1971;59:240-241.)
© 1971 American College of Chest Physicians

The Effect of High Frequency Filter Cut-Offs on the Apexcardiogram

Veronica Pigott M.S.1 and David H. Spodick M.D.2

1 Research Associate, Cardiographic Laboratory, Lemuel Shattuck Hospital
2 Chief, Cardiology Division, Medical Services, Lemuel Shattuck Hospital, Associate Professor of Medicine, Tufts University School of Medicine

Twenty-five apexcardiograms were split and recorded to obtain three simultaneous tracings at three different high frequency cut-offs. Study of the simultaneously recorded tracings shows there are no observable differences in the timing of points or in wave configurations.






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Copyright © 1971 by the American College of Chest Physicians.