A nurse in the emergency department is caring for a client who accidentally doubled their last dose of diazepam. After assessing the client, which of the following medications should the nurse plan to administer?

Choice A rationale Disulfiram is an aldehyde dehydrogenase inhibitor used in the treatment of chronic alcoholism. It works by blocking the metabolism of ethanol, leading to the accumulation of acetaldehyde, which produces unpleasant physical reactions when alcohol is consumed. It has no pharmacological effect on benzodiazepine overdose. Choice B rationale Flumazenil is a competitive benzodiazepine receptor antagonist that rapidly reverses the sedative and other central nervous system effects of benzodiazepine overdose. It acts by binding to the gamma-aminobutyric acid (GABA) receptor complex, thereby displacing benzodiazepines and restoring normal neurological function. Choice C rationale Naloxone is an opioid receptor antagonist primarily used to reverse opioid overdose. It competitively binds to opioid receptors, particularly mu receptors, thereby blocking the effects of opioid agonists and reversing respiratory depression and other opioid-induced central nervous system depression. It does not affect benzodiazepines. Choice D rationale Dantrolene is a direct-acting skeletal muscle relaxant primarily used in the treatment of malignant hyperthermia and spasticity. It works by interfering with calcium release from the sarcoplasmic reticulum in muscle cells, reducing muscle contraction. It has no role in reversing benzodiazepine overdose.