[Heart rate during perinatal period].

Observations on heart frequency during the perinatal period. Registrations of the fetal heart rate were carried out on 133 children before and after delivery. 3 different types of heart rate patterns were found, each of them could be subdivided in 2 groups. The several groups are different in the shape and the steepness of fetal heart rate ascent after delivery. Supplementary other fetal parameters were examined (Apgar-score, time of the first breath, moment of first newborn cry, onset of regular respiration). These parameters showed significant associations with the above-mentioned types of the fetal heart rate patterns. For the blood gas parameters however such relations to the heart rate patterns were not found.