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The clinical findings in three patients who ingested 260-900 mg cyclobenzaprine (Flexeril) consisted of delayed onset and long duration of anticholinergic symptomatology. In two of these patients, symptoms responded to treatment with physostigmine. The third patient recovered without specific therapy. Despite its structural similarity to amitriptyline, cyclobenzaprine overdosage did not result in coma, seizures, or cardiac toxicity. The pharmacological properties of cyclobenzaprine may account for the observed toxicity.

Rectal MXT compares favorably to other methods of nonintravenous sedation for CT scanning of stable pediatric ED patients in terms of rapidity of onset and reliability but does cause a significant amount of transient respiratory depression. Its use requires careful monitoring of oxygen saturation and should be used only in a setting where physicians skilled in airway management are present. If these requirements are met, it may be a good choice for the relatively noninvasive sedation of pediatric ED patients undergoing painless but anxiety-provoking procedures.methohexital, pediatric procedure sedation, rectal administration, computerized tomography imaging.