Clinical results of the induction of labour by means of the Cardiff-equipment. The fetal monitor BMT-504 (VEB Kombinat Mebgerätewerk Zwönitz) has been used as cardiotocographic control unit. Labour has been induced with oxytocin (n = 38) or methyloxytocin (n = 30). 50 deliveries, which where induced by means of intravenous oxytocin infusion enables to be comparate the results. Using the automatic infusion the average induction-delivery interval was 4 hours 14 minutes, the average dosage of tocergic drugs was 2 IW oxytocin or 20 mug methyloxytocin. Using oxytocin for labour induction we found an increase in obstetric operative frequency caused by fetal distress. There where an increase in basal tone of uterine activity in this patients. Therefore we recommend methyloxytocin for the labour induction of high risk pregnancies. The safety factors, which are incorporated in the Cardiff-equipment have many advantages in obstetrical routine work, to determine fetal distress at an earlier stage. The results presented show that with this automatic infusion system labour can induced with even greater efficiency and safety. The equipment is very useful in accordance to the continuous increasing number of planned deliveries.