Transcutaneous and arterial carbon dioxide tension at various conditions of fetal stress in lambs.
Gynecol Obstet Invest
; 43(1): 1-5, 1997.
Article
em En
| MEDLINE
| ID: mdl-9015690
ABSTRACT
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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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Placenta
/
Estresse Fisiológico
/
Cordão Umbilical
/
Dióxido de Carbono
/
Sangue Fetal
/
Doenças Fetais
/
Artéria Ilíaca
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Pregnancy
Idioma:
En
Revista:
Gynecol Obstet Invest
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Holanda