Intravenous Flunitrazepam as an Anaesthetic Induction Agent

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Abstract
The effects of the fluorinated benzodiazepine compound flunitrazepam were studied in eighty patients. The drug was administered intravenously in a standard dose of 2 mg, 3 mg, or 4 mg to supplement lumbar epidural analgesia. Induction was smooth and pleasant. The sleep onset time was dose related and exceeded one minute in the majority of patients. Sleep was invariably produced in patients receiving 4 mg but at lower dosage some patients failed to become unconscious. Pain in the arm during injection was a common feature. The respiratory rate was slightly increased, but in two patients apnoea occurred at induction. The cardiovascular system was minimally depressed with a small decrease in systolic blood pressure and pulse rate. Recovery from sleep was slow but sequelae were minimal. The sedative and amnesic properties contributed significantly to the high rate of patient acceptance.

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