Transcutaneous and Arterial Carbon Dioxide Tension at Various Conditions of Fetal Stress in Lambs
作者:
Martin G.M. Bergmans,
Gena H. Stevens,
Han Keunen,
Tom H.M. Hasaarth,
期刊:
Gynecologic and Obstetric Investigation
(Karger Available online 1997)
卷期:
Volume 43,
issue 1
页码: 1-5
ISSN:0378-7346
年代: 1997
DOI:10.1159/000291808
出版商: S. Karger AG
关键词: Fetal;Maternal;Sheep;Transcutaneous tension;Carbon dioxide tension
数据来源: Karger
摘要:
In an acute fetal lamb model the relation between arterial PCO2 (PaCO2), transcutaneous PCO2 (tcPCO2) and pH was studied at different conditions of stress. Occlusion of the maternal common iliac artery for 8 min, umbilical cord obstruction for 5 min and placental embolization were performed subsequently, every time with an interval of 1 h for fetal recuperation. During the first 2 experiments arterial values changed rapidly after occlusion and returned nearly to normal within 30-60 min after the end of occlusion. TcPCO2 started to increase several minutes after occlusion and reached its maximum about 5 min after the end of occlusion. Afterwards a gradual decrease towards the onset value was observed. During placental embolization tcPCO2 did not increase until 15 min before fetal death. It is concluded that tcPCO2 can follow a gradual trend, but not quick changes in PaCO2.
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