Effects of atelectasis and vascular occlusion on the simultaneous measurement of serotonin and propranolol pulmonary extraction in dogs.

Détails

ID Serval
serval:BIB_854950C4D321
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Effects of atelectasis and vascular occlusion on the simultaneous measurement of serotonin and propranolol pulmonary extraction in dogs.
Périodique
Clinical Science
Auteur(s)
Dargent F., Gardaz J.P., Morel P., Suter P.M., Junod A.F.
ISSN
0143-5221
Statut éditorial
Publié
Date de publication
09/1985
Peer-reviewed
Oui
Volume
69
Numéro
3
Pages
279-286
Langue
anglais
Résumé
To test the relative sensitivity of serotonin and propranolol pulmonary extraction measurements to changes in pulmonary vascular surface, we sequentially subjected anaesthetized dogs to left upper lobe atelectasis, left lung atelectasis and left pulmonary artery occlusion. We used a triple-indicator dilution technique to simultaneously measure the pulmonary extraction of serotonin and propranolol. After an initial series of measurements, dogs received dopamine and dextran to slightly increase pulmonary artery pressure and prevent further recruitment of capillaries. Left upper lobe atelectasis did not modify the pulmonary extraction of serotonin and propranolol. Left lung atelectasis provoked a reduction in the serotonin extraction ratio by only 4%, whereas the propranolol extraction ratio decreased by 13%. After left pulmonary artery occlusion, propranolol and serotonin extraction ratios decreased by 16% and 5% respectively. We conclude that the pulmonary extraction of propranolol is more sensitive to a decrease in pulmonary vascular surface than that of serotonin.
Mots-clé
Animals, Arterial Occlusive Diseases/metabolism, Dogs, Female, Indocyanine Green/diagnostic use, Lung/blood supply, Lung/metabolism, Male, Propranolol/metabolism, Pulmonary Artery, Pulmonary Atelectasis/metabolism, Serotonin/metabolism
Pubmed
Web of science
Création de la notice
28/01/2008 11:48
Dernière modification de la notice
03/03/2018 18:56
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