The usage and rapid acceptance of direct fetal monitoring systems on a large obstetric service are presented. Data are given which will serve those concerned with projecting supply consumption needs per patient. The indications for monitoring and over-all usage are stated. Delivery by cesarean section occurred in 17.5 per cent of monitored patients compared with 3.5 per cent in unmonitored patients. The over-all influence of intrapartum monitoring on the cesarean section rate is discussed. Perinatal data are presented which suggest probable benefits to the monitored fetus as compared to those unmonitored. This is true particularly when one considers that the monitored group is composed exclusively of “high-risk” patients.