| Non-invasive cardiac output measurement using a fast mixing box to measure carbon dioxide elimination. | |
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MedLine Citation:
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PMID: 18853584 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study investigated the accuracy of a new technique for measuring cardiac output using the derivative Fick principle based on the ratio of change in the partial pressures of end-tidal and mixed expired carbon dioxide produced by short periods of partial rebreathing. A prospective clinical study involving 24 patients following cardiopulmonary bypass for coronary artery bypass grafting or valvular surgery was undertaken in the intensive care unit of a university-affiliated hospital. Haemodynamic measurements were performed after admission to the intensive care unit. Cardiac output was measured simultaneously by bolus pulmonary artery thermodilution and by a non-invasive carbon dioxide partial rebreathing technique. Cardiac output measurement using the new technique demonstrated a significant but consistent underestimate, with a bias of -0.60 +/- 0.87 l/min. This new adaptation of the partial rebreathing technique is reliable in measuring cardiac output in postoperative patients. Reasons for the consistent discrepancy between thermodilution and partial rebreathing techniques are discussed. |
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Authors:
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C J Killick; W G Parkin |
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Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: Anaesthesia and intensive care Volume: 36 ISSN: 0310-057X ISO Abbreviation: Anaesth Intensive Care Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-10-15 Completed Date: 2009-01-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0342017 Medline TA: Anaesth Intensive Care Country: Australia |
Other Details:
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Languages: eng Pagination: 665-73 Citation Subset: IM |
Affiliation:
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Intensive Care Unit, Monash Medical Centre, Clayton, Victoria, Australia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Carbon Dioxide / metabolism* Cardiac Output / physiology* Equipment Design Female Hemodynamics / physiology Humans Male Middle Aged Monitoring, Physiologic / instrumentation* Prospective Studies Reproducibility of Results Respiration Respiratory Mechanics / physiology Thermodilution Young Adult |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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