Continuous thermodilution measurement of cardiac output: in-vitro and in-vivo evaluation

Détails

ID Serval
serval:BIB_7434BBAB1D4A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Continuous thermodilution measurement of cardiac output: in-vitro and in-vivo evaluation
Périodique
Thoracic and Cardiovascular Surgeon
Auteur(s)
Mihaljevic  T., von Segesser  L. K., Tonz  M., Leskosek  B., Jenni  R., Turina  M.
ISSN
0171-6425
Statut éditorial
Publié
Date de publication
02/1994
Peer-reviewed
Oui
Volume
42
Numéro
1
Pages
32-5
Notes
Comparative Study
Journal Article --- Old month value: Feb
Résumé
The current study was designed to evaluate a method for continuous measurement of cardiac output. The system consists of a modified pulmonary artery catheter that uses the thermodilution principle for determination of cardiac output. The evaluation was performed in vitro and in vivo. In-vitro evaluation was performed using a simple flow bench model (flow 2-9 L/min). Both continuous and bolus thermodilution methods were compared. Both methods showed good correlation with the pump flow calibrated using a volumetric tank and timer (correlation coefficient (r) for bolus thermodilution = 0.92, r for continuous thermodilution = 0.90). In-vivo evaluation was performed in six bovine experiments. Data from a total of 87 pairs of bolus versus continuous measurements were obtained. The cardiac output ranged from 1.9 to 8.9 L/min. The absolute measurement bias was not significant (mean: -0.07 L/min; 95% confidence limits: -0.87 and 0.73 L/min). The squared correlation coefficient from linear regression was 0.92. The results from this study suggest that the new continuous thermodilution measurement system for cardiac output provides accurate data in vitro and in vivo. Continuous monitoring of cardiac output adds a new dimension for evaluation of the patient's hemodynamic profile. Furthermore, significant volume load due to bolus thermodilution measurements can be avoided.
Mots-clé
Animals Cardiac Output/*physiology Cattle Humans Models, Cardiovascular *Thermodilution
Pubmed
Web of science
Création de la notice
14/02/2008 15:15
Dernière modification de la notice
03/03/2018 18:21
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