Künzcl et al., Dip arca and acid-basc-observation during labor J. Perinat. Med. 4(1976)271 Wolfgang Künzel, Michael Cornely Frauenklinik der Medizinischen Hochschule Hannover The decrease in fetal heart rate which is seen occasionally in late pregnancy andespecially during labor is usually related to uterine contractions. Since the fall in heart rate is associated with fetal hypoxia [2, 5] an attempt was made to use the dip area (DA) for predicting fetal condition. Dip area was related to the pH in the umbilical vein  and to one scalp blood sample taken after measuring DA . Neither the pH in the umbilical vein gives a reliable index for fetal condition nor one scalp blood sample can indicate the changes in pH and BE which are expected during the presence of deceleration. This can only be a vague approximation describing the relationship of DA and acid base observations. Maternal Pco2 and blood lactate transfer from mother to the fetus and reverse äs shown by KASTENDIECK and MOLL  in animal experiments can influence the fetal pH and base excess. Maternal acid base observations were neverstudied in connection with DA. In previous experiments  we have already undertaken an attempt to quantify
Journal of Perinatal Medicine – de Gruyter
Published: Jan 1, 1976
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