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Canadian Journal of Anesthesia, Vol 32, 525-532, Copyright © 1985 by Canadian Anesthesiologists' Society

Clinical Reports: Foetal Monitoring in Parturients Undergoing Surgery Unrelated to Pregnancy

PHILIP L. LIU MD1, THOMAS M. WARREN MD1, GERARD W. OSTHEIMER MD1, JESS B. WEISS MD1, and LETTY M. P. LIU MD1

1 Department of Anesthesia of Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts

Address correspondence to: Dr. Philip L. Liu, Department of Anesthesia, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115.

Foetal heart rate and tocodynamic monitoring of the uterus was performed in five pregnant patients undergoing urgent or emergency surgery unrelated to their pregnancy. All received general anaesthesia with halothane or enflurane and nitrous oxide. The loss of beat-to-beat variation of the foetal heart rate was observed in all patients under general anaesthesia, and is probably normal for the anaesthetized foetus. Since continuous intraoperative monitoring of foetal heart rate in pregnant patients is technically feasible during peripheral surgery and during many intra-abdominal procedures, attempts should be made to monitor foetal heart rate in all anaesthetized parturients to assure that the anaesthetic is not causing foetal insult. Postoperative monitoring of uterine tone is useful in the diagnosis and treatment of postoperative premature labor.

Key Words: PREGNANCY: surgery • MONITORING: foetal heart rate, uterine tone, uterine contractions






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Copyright © 1985 by the Canadian Anesthesiologists' Society.