| Computer-assisted method for performing impedance cardiography calculations. | |
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MedLine Citation:
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PMID: 7061275 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Impedance cardiography provides a noninvasive technique to monitor stroke volume on a beat-by-beat basis. It correlates well with other techniques at rest, with both cycle and arm-ergometer exercise, and during head-up tilt. It has the advantage that it does not require active subject participation, as does the CO2-rebreathing technique; yet it is still noninvasive. The method described herein facilitates the measurement and calculation of stroke volume, cardiac output, and indices of ventricular function when this technique is used - whether a few or many beats are recorded. This method utilizes a recording of the impedance cardiogram, which may include a simultaneously recorded electrocardiogram and phonocardiogram; a digitizer for reading the coordinates from the recording; a CRT terminal with keyboard for additional data input and for monitoring output; a printer; and a minicomputer for calculation of variables and data analysis. Data related to approximately 100 cardiac beats can be read, calculated, printed, and statistically analyzed in about an hour. |
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Authors:
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M A Frey |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of applied physiology: respiratory, environmental and exercise physiology Volume: 52 ISSN: 0161-7567 ISO Abbreviation: J Appl Physiol Publication Date: 1982 Jan |
Date Detail:
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Created Date: 1982-05-12 Completed Date: 1982-05-12 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7801242 Medline TA: J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 274-7 Citation Subset: IM; S |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cardiography, Impedance
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instrumentation,
methods* Computers* Humans Plethysmography, Impedance / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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