Abstract
Sixteen patients requiring general anaesthesia for termination of pregnancy by dilatation and evacuation of the uterus were studied. Arterial and end-tidal carbon dioxide tensions were determined during anaesthesia. The mean arterial to end-tidal carbon dioxide tension difference was 0.07 kPa (-0.02-0.16, 5-95 per cent confidence limits). These results were similar to those observed during Caesarean section and those during anaesthesia for post-delivery tubal ligations. The physiological changes such as increased cardiac output, haemodilution, and increased blood volume which manifest by 12 weeks of gestation probably result in a reduced (a-E’)PCO2 value.
Résumé
Seize patientes requérant une anesthésie générale pour avortement par dilatation et évacuation de ľutérus ont été étudiées. Lors de ľanesthésie, la différence entre la PCO2 artérielle et la PCO2 enfin ďexpiration fut déterminée. La différence moyenne de la PCO2 artérielle et de la PCO2 enfin ďexpiration était de 0.07 kPa (-0.02-0.16, 5-95 pour cent de limite de confiance). Ces résultats sont similaires à ceux observés lors ďune césarienne et lors ďune anesthésie après accouchement pour ligature tubaire. Les altérations physiologiques comme ľaugmentation du débit cardiaque, ľhémodilution et ľaugmentation du volume sanguin qui se manifestent 12 semaines après la gestation, amènent probablement une réduction des valeurs de (a-E’) PCO2.
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Shankar, K.B., Moseley, H., Vemula, V. et al. Arterial to end-tidal carbon dioxide tension difference during anaesthesia in early pregnancy. Can J Anaesth 36, 124–127 (1989). https://doi.org/10.1007/BF03011432
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DOI: https://doi.org/10.1007/BF03011432