| Effects of the respiratory cycle on cardiac output measurements: reproducibility of data enhanced by timing the thermodilution injections in dogs. | |
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MedLine Citation:
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PMID: 7032845 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Cardiac output (Q) was measured with the thermodilution technique at 4 points during the respiratory cycle in dogs. Boluses of an ice-cold solution were injected at mid- and end-inspiration while the animals were on intermittent positive-pressure ventilation (IPPV) or after induction of positive end-expiratory pressure (PEEP), with and without induction of experimental respiratory failure. Values were mot constant at end-inspiration. During IPPV without respiratory failure, the standard error of 74 measurements at end-inspiration was 5.1% and of 74 measurements randomly selected was 9.8%. Continuous infusion resulted in similar fluctuations in Q (r = 0.92). Values obtained during experimental respiratory failure were not significantly different. The authors conclude that timing the bolus injections with the respiratory cycle enhances the reproducibility of Q values obtained with the thermodilution technique. |
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Authors:
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J Armengol; G C Man; A J Balsys; A L Wells |
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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: Critical care medicine Volume: 9 ISSN: 0090-3493 ISO Abbreviation: Crit. Care Med. Publication Date: 1981 Dec |
Date Detail:
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Created Date: 1982-03-22 Completed Date: 1982-03-22 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0355501 Medline TA: Crit Care Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 852-4 Citation Subset: AIM; IM; S |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cardiac Output* Dogs Intermittent Positive-Pressure Ventilation* Positive-Pressure Respiration* Respiration* Thermodilution / instrumentation, methods* |
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