Validity and Reliability of Cardiac Output by Arterial Thermodilution and Arterial Pulse Contour Analysis Compared With Pulmonary Artery Thermodilution in Intensive Care Unit

THEWARUG WERAWATGANON,MD,MSc*, SAHADOL PUNYATAVQRN, MD*, PHORNLERT CHATKAEW, MD*, PA VENA BUNBURAPHONG, MD*

Affiliation : *Department of Anesthesiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.

AbstractCardiac output measurement has a significat role in the critical care setting. The standard of mesurement currently is via pulmonary arterial catheter but it has some technical difficulties and serious complications. The authors performed a new method of measurement that used a catheter in a femoral artery. The results of both methods performed simultaneously in 10 surgical intensive care patients =every 2 hours for 24 hours were compared. There was high correlation between the two methods, r 0.97. The average difference of the cardiac output values was 0.46 1/min with standard deviation 0.56 1/min.

Keywords : Cardiac Output, Thermodilution, Pulse Contour Analysis

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