Transdermal scopolamine intoxication in a child.
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Two hundred and eight healthy children who were to undergo minor elective surgery during halothane, nitrous oxide, oxygen anaesthesia were studied in a double blind investigation to evaluate the sedative and anticholinergic effects of two rectal premedications. Group I received diazepam 0.75 mg/kg rectally; Group II received a mixture of diazepam 0.5 mg/kg, morphine 0.15 mg/kg and hyoscine 0.01 mg/kg rectally. No significant difference was found between the two groups in sedative or anticholinergic effects during induction of anaesthesia or in the postoperative period. No adverse effects were seen.
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The effects of the methanolic extract of Radix Angelica Sinensis (Umbellifera) (abbreviated as RAS extract) and n-hexane fraction of RAS extract (RAS(H) fraction) on the various drugs-induced amnesia in rats were studied by using passive avoidance task. RAS extract (1 g/kg) significantly prolonged the shortened step-through latency induced by SCOP and CXM, but not PCA. Furthermore, RAS(H) fraction (1 g/kg) also significantly prolonged the shortened step-through latency induced by SCOP and CXM but not PCA. RAS extract at any dose alone did not influence the step-through latency in the training trial produced by non-shocked rats, but it plus PCA prolonged the latency compared with PCA alone. However, RAS(H) fraction (1 g/kg) prolonged the latency in the training trial produced by non-shocked rats, but it plus any induced drugs did not differ from any induced drugs alone. These results suggest that the attenuating effects of RAS extract on the various drugs-induced amnesia were related to the memory processes. n-Hexane fraction of RAS extract might be one of the active fractions of RAS extract in the treatment of amnesia.