| Hemodynamic response to exercise as measured by the solar IKG impedance cardiography module and correlation with metabolic variables. | |
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MedLine Citation:
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PMID: 17086447 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Impedance Cardiography (ICG) has been shown to be a feasible and accurate method for non-invasive measurement of cardiac index (CI). Aim of this investigation was the correlation of hemodynamic variables under exercise as measured by a specific ICG-monitor (Solar IKG-Modul, Version 3.0, GE-Healthcare, Freiburg, Germany) with metabolic variables. METHODS: Ten healthy volunteers were included in the investigation doing ergometer exercise (5 min equilibration followed by 5 min each at 50, 75, 100 and 125 W). Hemodynamic parameters were obtained by ICG. Metabolic variables were assessed by indirect calorimetry with the Deltatrac II Metabolic monitor using a helmet system for spontaneous respiration. RESULTS: CI increased throughout exercise (baseline: 3.0 +/- 0.4 l/min/m(2); 125 W: 4.8 +/- 0.5 l/min/m(2)). Heart rate (baseline: 87.2 +/- 13.4 bpm; 125 W: 152.7 +/- 22.4 bpm) and contractility (velocity index) (baseline: 48.9 +/- 9.3/1000 s; 125 W: 70.5 +/- 10.0/1000 s) showed a continuous rise while the stroke index decreased after an initial rise (baseline: 35.0 +/- 4.6 ml/m(2); 50 W: 37.6 +/- 4.9 ml/m(2); 75 W: 41.2 +/- 5.9 ml/m(2); 125 W: 32.3 +/- 6.1 ml/m(2)). VO(2) (baseline: 335.2 +/- 84.1 ml/min; 125 W: 1298.9 +/- 282.3 ml/min) and VCO(2)(baseline: 255.4 +/- 74.5 ml/min; 125 W: 1342.5 +/- 282.5 ml/min) increased throughout exercise. There was a good correlation in the individual fits between hemodynamic and metabolic variables. CONCLUSION: CI in healthy volunteers, as measured by the Solar IKG-Modul, correlates well with O(2)-consumption and CO(2)-production in individual subjects, thus indicating the metabolic needs under exercise conditions in healthy individuals. |
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Authors:
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Stephan Ziegeler; Ulrich Grundmann; Oliver Fuerst; Alexander Raddatz; Sascha Kreuer |
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Publication Detail:
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Type: Journal Article Date: 2006-11-04 |
Journal Detail:
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Title: Journal of clinical monitoring and computing Volume: 21 ISSN: 1387-1307 ISO Abbreviation: J Clin Monit Comput Publication Date: 2007 Feb |
Date Detail:
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Created Date: 2007-01-31 Completed Date: 2007-10-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9806357 Medline TA: J Clin Monit Comput Country: Netherlands |
Other Details:
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Languages: eng Pagination: 13-20 Citation Subset: IM |
Affiliation:
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Department of Anesthesiology and Intensive Care Medicine, University of Saarland, 66421, Homburg/Saar, Germany. stephan.ziegeler@uniklinik-saarland.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Carbon Dioxide / chemistry Cardiac Output Cardiography, Impedance* Electrodes Exercise Female Heart Rate Humans Male Monitoring, Ambulatory / methods* Oxygen / chemistry Oxygen Consumption Regression Analysis Stroke Volume |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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