Systolic axial artery length reduction: an overlooked phenomenon in vivo.

Détails

ID Serval
serval:BIB_35D91A26F0E6
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Systolic axial artery length reduction: an overlooked phenomenon in vivo.
Périodique
American Journal of Physiology. Heart and Circulatory Physiology
Auteur⸱e⸱s
Tozzi P., Hayoz D., Oedman C., Mallabiabarrena I., Von Segesser L.K.
ISSN
0363-6135
Statut éditorial
Publié
Date de publication
05/2001
Peer-reviewed
Oui
Volume
280
Numéro
5
Pages
H2300-2305
Langue
anglais
Notes
Publication types: Journal Article
Résumé
To demonstrate axial artery motion during the cardiac cycle, the common carotid arteries (CCA) of 10 pigs were exposed and equipped with piezoelectric crystals sutured onto the artery as axial position detectors. An echo-tracking system was used to simultaneously measure the CCA diameter. For each animal, data for pressure, length, and diameter were collected at a frequency of 457 Hz. At a mean pulse pressure of 33 +/- 8 mmHg, the mean systolodiastolic length difference was 0.3 +/- 0.01 mm for a mean arterial segment of 11.35 +/- 1.25 mm. Systolic and diastolic diameters were 4.1 +/- 0.3 and 3.9 +/- 0.2 mm, respectively. The examined CCA segment displayed a mean axial systolic shortening of 2.7%. This study clearly demonstrates, for the first time, that the length of a segment of the CCA changes during the cardiac cycle and that this movement is inversely correlated with pulse pressure. It is also apparent that the segmental axial strain is significantly smaller than the diameter variation during the cardiac cycle and that the impact of the axial strain for compliance computation should be further evaluated.
Mots-clé
Animals, Blood Pressure/physiology, Carotid Arteries/physiology, Carotid Arteries/ultrasonography, Diastole/physiology, Pulsatile Flow/physiology, Swine, Systole/physiology, Ultrasonography/methods
Pubmed
Web of science
Création de la notice
17/01/2008 17:38
Dernière modification de la notice
20/08/2019 14:23
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