The sedative, hypnotic and amnesic effects of flunitrazepam, a new benzodiazepine, were tested in doses of 0 (placebo), 0,4 mg and 0,8 mg. These doses were sufficient to produce a satisfying sedative effect on patients, being operated on in regional anaesthesia. In few cases we found undesirable effects. Positive and negative aspects of amnesia will be discussed.
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