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0. Phenobarbital is a barbiturate and will cause a positive test result for barbiturates. Phenytoin (Dilantin) is not a barbiturate; however a metabolite, p-hydroxyphenytoin has minimal cross reactivity on the initial screening test. There is no interfe.... Phenobarbital is a barbiturate and will cause a positive test result for barbiturates. Phenytoin (Dilantin) is not a barbiturate; however a metabolite, p-hydroxyphenytoin has minimal cross reactivity on the initial screening test. There is no interfe...
4 Summary: The barbiturate agents are used as general anesthetics in procedural sedation. Barbiturates have narrow therapeutic indexes and their use is limited. The barbiturate agents indicated in procedural sedation/anesthesia include amobarbital, methohexital, secobarbital, and thiopental.ummary The barbiturate agents are used as general anesthetics in procedural sedation. Barbiturates have narrow therapeutic indexes and their use is limited. The barbiturate agents indicated in procedural sedation/anesthesia include amobarbital, methohexital, secobarbital, and thiopental.