Diameters of the common carotid artery and aorta change in different directions during acute asphyxia in the fetal lamb.

Abstract:

:The aim of this experimental ultrasound study on six fetal lambs was to evaluate how blood flow variables and vessel diameters of the descending aorta and the common carotid artery change during fetal asphyxia in the acute preparation. When acute asphyxia was induced by obstructing the maternal aortic blood flow all fetuses reacted with significant decrease in the aortic diameter and blood flow. In the common carotid artery vessel diameter and the blood flow increased significantly. The results support the theory of a brain sparing effect during fetal distress with significant changes of blood vessel diameters occurring in opposite directions in the aorta and the common carotid artery, thereby contributing to the centralisation of circulation.

journal_name

J Perinat Med

authors

Malcus P,Kjellmer I,Lingman G,Marsál K,Thiringer K,Rosén KG

subject

Has Abstract

pub_date

1991-01-01 00:00:00

pages

259-67

issue

4

eissn

0300-5577

issn

1619-3997

journal_volume

19

pub_type

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