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Increase of fetal arterial blood temperature by reduction of umbilical blood flow in chronically instrumented fetal sheep

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  • Heart, Circulation, Respiration and Blood; Environmental and Exercise Physiology
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Abstract

The effect of reduced umbilical blood flow rate on fetal core temperature was investigated in five chronically instrumented fetal sheep (gestational age 124 days). On average, fetal-maternal temperature difference increased 0.13±0.02 °C when blood flow rate was decreased to about 1/3 of normal (248±69 ml min−1) for 30 min. The small temperature rise is the consequence of predominant heat dissipation through the placenta, and of diminished oxygen consumption.

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Authors and Affiliations

  1. Abteilung für Experimentelle Medizin, Universitäts-Frauenklinik, Martinistrasse 52, D-20246, Hamburg, Germany

    H. J. Schröder

  2. Division of Perinatal Biology, Loma Linda University Medical School, 92350, Loma Linda, CA, USA

    G. G. Power

Authors
  1. H. J. Schröder
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  2. G. G. Power
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Schröder, H.J., Power, G.G. Increase of fetal arterial blood temperature by reduction of umbilical blood flow in chronically instrumented fetal sheep. Pflügers Arch. 427, 190–192 (1994). https://doi.org/10.1007/BF00585962

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  • DOI: https://doi.org/10.1007/BF00585962

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