Document Detail

Pulse contour cardiac output derived from non-invasive arterial pressure in cardiovascular disease.
MedLine Citation:
PMID:  20860647     Owner:  NLM     Status:  MEDLINE    
Pulse contour methods determine cardiac output semi-invasively using standard arterial access. This study assessed whether cardiac output can be determined non-invasively by replacing the intra-arterial pressure input with a non-invasive finger arterial pressure input in two methods, Nexfin CO-trek and Modelflow , in 25 awake patients after coronary artery bypass surgery. Pulmonary artery thermodilution cardiac output served as a reference. In the supine position, the mean (SD) differences between thermodilution cardiac output and Nexfin CO-trek were 0.22 (0.77) and 0.44 (0.81) l.min(-1) , for intra-arterial and non-invasive pressures, respectively. For Modelflow, these differences were 0.70 (1.08) and 1.80 (1.59) l.min(-1) , respectively. Similarly, in the sitting position, differences between thermodilution cardiac output and Nexfin CO-trek were 0.16 (0.78) and 0.34 (0.83), for intra-arterial and non-invasive arterial pressure, respectively. For Modelflow, these differences were 0.58 (1.11) and 1.52 (1.54) l.min(-1) , respectively. Thus, Nexfin CO-trek readings were not different from thermodilution cardiac output, for both invasive and non-invasive inputs. However, Modelflow readings differed greatly from thermodilution when using non-invasive arterial pressure input.
L W J Bogert; K H Wesseling; O Schraa; E J Van Lieshout; B A J M de Mol; J van Goudoever; B E Westerhof; J J van Lieshout
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-09-21
Journal Detail:
Title:  Anaesthesia     Volume:  65     ISSN:  1365-2044     ISO Abbreviation:  Anaesthesia     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-15     Completed Date:  2010-11-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370524     Medline TA:  Anaesthesia     Country:  England    
Other Details:
Languages:  eng     Pagination:  1119-25     Citation Subset:  AIM; IM    
Copyright Information:
© 2010 The Authors. Anaesthesia © 2010 The Association of Anaesthetists of Great Britain and Ireland.
Department of Internal Medicine, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
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MeSH Terms
Blood Pressure Determination / methods
Cardiac Output*
Coronary Artery Bypass*
Fingers / blood supply
Middle Aged
Monitoring, Physiologic / methods
Postoperative Care / methods*
Posture / physiology
Pulmonary Artery / physiology
Reproducibility of Results

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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