A Model of the Foetal Circulation for the Interpretation of Foetal Heart Rate Patterns
At present a growing number of obstetricians are making use of the advances in modern technology to derive information about the condition of the human foetus during pregnancy and birth. Most commonly the foetal heart rate (FHR) and the intra-uterine pressure (IUP) are monitored during labour. The FHR sometimes shows variations, often related to uterine contractions. One of such variations, called a variable deceleration, is said to be due to compression of the umbilical cord during a uterine contraction (1).
KeywordsUmbilical Cord Foetal Heart Rate Umbilical Artery Uterine Contraction Foetal Circulation
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- 1.Hon, E.H.: An atlas of the foetal heart rate patterns Hartley Press Inc., New Haven, 1968Google Scholar
- 2.Veth, A.F.L.: Modelling the foetal circulation: simulation of the response to umbilical cord occlusion Thesis, Amsterdam, 1976Google Scholar
- 3.Assali, N.S., Brinkman III, C.R. and Nuwayhid, B.: Comparison of maternal and fetal cardiovascular functions in acute and chronic experiments in the sheep. Am. J. Obstet. Gynecol. 120 (3): 411, 1974Google Scholar
- 4.Rudolph, A.M. and Heymann, M.A.: Circulatory changes during growth in the fetal lamb Circ. Res. 26: 289, 1970Google Scholar
- 5.Wesseling, K.H., Nichols, W.W., de Wit, B., and Weber, J.A.P.: A beat-to-beat cardiac output computer I and II Proc. 3rd Intern. Conf. Med. Phys., incl. medical engineering Goteborg, 1972Google Scholar