Electroencephalographic effects of fentanyl-, sufentanil- and alfentanil anaesthesia in man

EEGs taken from patients during and following open heart surgery were analyzed by computer. Patients were treated with high doses of either fentanyl, sufentanil or alfentanil as the sole anaesthetic. The aims were to determine depth of anaesthesia, comparing different doses of one compound and comparing different narcotics. Further, recovery from anaesthesia was also studied using EEG criteria.