[en] The purpose of this study was to establish a standardized protocol in order to obtain accurate and reproducible cardiac output (CO) measurements by the thermodilution technique in the unsedated calf. In 5 healthy calves, the effect of various temperatures, volumes, rates, means and sites of injection of the thermal indicator were tested for their effect on accuracy and reproducibility of CO measurement by the thermodilution technique, the Fick method being used as the standard technique. Five milliliters of an iced 5% dextrose solution per 100 kg body weight constituted the correct amount of thermal indicator. Manual injection of the indicator bolus and/or injection of this bolus through the proximal lumen of a thermodilution Swan-Ganz catheter gave poor results of CO measurements by the thermodilution technique. On the other hand, results of CO measurements were highly reliable when the bolus injection was performed by an ECG-synchronized injection pump and/or through a right atrial catheter with a larger diameter and a shorter length than the classical Swan-Ganz catheter. It was concluded that an iced 5% solution of dextrose (5 ml/100 kg body weight) injected through a right atrial catheter by an ECG-synchronized pump gives the most accurate and reproducible CO measurements by the thermodilution technique in unsedated calves.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology Veterinary medicine & animal health
Author, co-author :
Amory, Hélène ; Université de Liège - ULiège > Physiology
Linden, Annick ; Université de Liège - ULiège > Département des maladies infectieuses et parasitaires
Desmecht, Daniel ; Université de Liège - ULiège > Département de morphologie et pathologie
Rollin, Frédéric ; Université de Liège - ULiège > Département clinique des animaux de production (DCP)
Genicot, B.
Lekeux, Pierre ; Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie
Language :
English
Title :
Validation of the Thermodilution Technique for the Estimation of the Cardiac Output in the Unsedated Calf
Publication date :
1991
Journal title :
Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine
ISSN :
0931-184X
eISSN :
1439-0442
Publisher :
Blackwell Publishing, Berlin, Germany
Volume :
38
Issue :
6
Pages :
409-417
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Convention n°5131 A
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique IRSIA - Institut pour l'Encouragement de la Recherche Scientifique dans l'Industrie et l'Agriculture
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