[Clinical experiences with the anesthesia and brain monitor (ABM)]

The Anaesthesia and Brain Monitor (ABM) was employed in 83 patients (of 24 to 86 years of age) who were subjected to abdominal surgery, and in 21 intensive-care patients under artificial respiration and sedative treatment (of 45 to 74 years of age), the equipment being used for monitoring anaesthesia or sedation. With this method it became possible to effect a largely integrated surveillance of EEG, EMG, NMT, pCO2, as well as, if desired, external blood pressure measurement by time-synchronous measurement and integration of parameters largely used singly in clinical practice to date. Whereas the EEG parameters (amplitude, frequency), if considered singly, do not yield clear information on the stage of anaesthesia, they can supply additional information especially in very light or very deep anaesthesia, together with the other measured parameters. In intensive care, they afford an estimation of the degree of the sedation.