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RESEARCH PAPERS

Sternal Force-Displacement Relationship During Cardiopulmonary Resuscitation

[+] Author and Article Information
K. G. Gruben, H. R. Halperin, J. E. Tsitlik

Peter Belfer Laboratory for Cardiac Mechanics, the Cardiology Division of the Department of Medicine, and the Department of Biomedical Engineering, The Johns Hopkins University and Medical Institutions, Baltimore, MD

A. D. Guerci

Peter Belfer Laboratory for Cardiac Mechanics, the Cardiology Division of the Department of Medicine, The Johns Hopkins University and Medical Institutions, Baltimore, MD

A. S. Popel

The Department of Biomedical Engineering and the Department of Mechanical Engineering, The Johns Hopkins University and Medical Institutions, Baltimore, MD

J Biomech Eng 115(2), 195-201 (May 01, 1993) (7 pages) doi:10.1115/1.2894121 History: Received April 03, 1992; Revised June 22, 1992; Online March 17, 2008

Abstract

A viscoelastic model is presented to describe the dynamic response of the human chest to cyclic loading during manual cardiopulmonary resuscitation (CPR). Sternal force and displacement were measured during 16 clinical resuscitation attempts and during compressions on five CPR training manikins. The model was developed to describe the clinical data and consists of the parallel combination of a spring and dashpot. The human chests’ elastic and damping properties were both augmented with increasing displacement. The manikins’ elastic properties were stiffer and both elastic and damping properties were less dependent on displacement than the humans’.

Copyright © 1993 by The American Society of Mechanical Engineers
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