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ballistocardiograph

[buh-lis-toh-kahr-dee-uh-graf, -grahf] /bəˌlɪs toʊˈkɑr di əˌgræf, -ˌgrɑf/
noun, Medicine/Medical
1.
a device that determines cardiac output by recording the movements of the body caused by contraction of the heart and ejection of blood into the aorta.
Origin
1935-1940
1935-40; ballist(ic) + -o- + cardiograph
Related forms
ballistocardiography
[buh-lis-toh-kahr-dee-og-ruh-fee] /bəˌlɪs toʊˌkɑr diˈɒg rə fi/ (Show IPA),
noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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ballistocardiography in Medicine

ballistocardiograph bal·lis·to·car·di·o·graph (bə-lĭs'tō-kär'dē-ə-grāf')
n.
A device used to determine the volume of blood passing through the heart in a specific period of time and the force of cardiac contraction by measuring the body's recoil as blood is ejected from the ventricles with each heartbeat.


bal·lis'to·car'di·og'ra·phy (-ŏg'rə-fē) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for ballistocardiography

graphic recording of the stroke volume of the heart for the purpose of calculating cardiac output. The heartbeat results in motion of the body, which in turn causes movements in a suspended supporting structure, usually a special table or bed on which the subject is lying, and these movements are recorded photographically (ballistocardiogram, or BCG) as a series of waves. The BCG is one of the most sensitive measures of the force of the heartbeat, and an abnormality appearing in the BCG of an apparently healthy subject aged 40, or younger, may be suggestive of symptomatic coronary disease.

Learn more about ballistocardiography with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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