Pulmonary artery blood temperature and the measurement of cardiac output by thermodilution

Summary Thermodilution cardiac output measurement assumes that the temperature within the pulmonary artery is stable during the measurement period. This may not be achieved in clinical practice because of temperature changes that are not solely produced by the thermal indicator. Such temperature cha...

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Bibliographic Details
Published in:Anaesthesia 2002-06, Vol.57 (6), p.562-566
Main Authors: Moise, S. F., Sinclair, C. J., Scott, D. H. T.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Blood Physiological Phenomena
Cardiac Output - physiology
Cardiac output measurement
Cardiopulmonary Bypass
Cardiovascular system
Catheterization
Computers
Humans
Investigative techniques of hemodynamics
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Pulmonary Artery
Respiration
Sensitivity and Specificity
thermal noise
Thermodilution
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Summary:Summary Thermodilution cardiac output measurement assumes that the temperature within the pulmonary artery is stable during the measurement period. This may not be achieved in clinical practice because of temperature changes that are not solely produced by the thermal indicator. Such temperature changes constitute thermal noise. Thermal noise and how it may interfere with measurement is discussed with reference to both the injectate and the thermal filament methods of thermodilution cardiac output measurement.
ISSN:0003-2409
1365-2044
DOI:10.1046/j.1365-2044.2002.02513.x