[Polymorphonuclear infiltration of the placenta in cases with internal fetal monitoring (author's transl)].

The infectious morbidity due to intra-amniotic fetal monitoring was studied morphologically in 100 spontaneous deliveries with intra-amniotic fetal monitoring. The control group consisted of 100 spontaneous deliveries with external fetal monitoring. It was shown that internal fetal monitoring does not increase the infectious morbidity with total labours of up to 12 hours. The occurrence of inflammatory cell infiltrates in the placenta, the membranes and the umbilical cord is not in each case due to a bacterial intra-uterine infection. The pathogenesis of these infiltrates is discussed comparing the results of the literature and this study.