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?
Disulfiram.
Flumazenil.
Naloxone.
Dantrolene.
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Gastrointestinal reflux, or GERD, is a condition where stomach acid flows back into the esophagus. While triptans can sometimes cause mild gastrointestinal upset, GERD itself is not a contraindication to sumatriptan use. The mechanism of action of sumatriptan involves serotonin receptor agonism, which does not significantly exacerbate or directly interact with the pathophysiology of gastrointestinal reflux disease.
Choice B rationale
Angina pectoris is chest pain caused by reduced blood flow to the heart muscle, often due to coronary artery disease. Sumatriptan causes vasoconstriction by acting on serotonin 5-HT1B/1D receptors. This generalized vasoconstrictive effect can lead to coronary artery spasm and worsen myocardial ischemia, making it a significant contraindication in patients with cardiovascular conditions like angina pectoris or a history of myocardial infarction.
Choice C rationale
Routine acetylsalicylic acid (aspirin) use is common for its antiplatelet and analgesic properties. There is no known direct contraindication to sumatriptan use in patients taking routine acetylsalicylic acid. While both medications can affect platelet function, their mechanisms of action and indications are distinct, and concurrent use is generally considered safe if no other contraindications exist.
Choice D rationale
Eczema is an inflammatory skin condition characterized by dry, itchy patches. Eczema is a dermatological condition and does not have any physiological or pharmacological interaction with sumatriptan's mechanism of action, which primarily involves vasoconstriction in the cerebral vasculature and inhibition of trigeminal nerve activity. Therefore, eczema is not a contraindication to sumatriptan therapy.
Correct Answer is A
Explanation
Choice A rationale
Documenting the client's refusal and the stated reason in the nurses' notes is crucial for legal and ethical reasons. It provides a clear record of the event, ensures continuity of care by informing other healthcare providers, and allows for follow-up interventions to address the client's concerns or alternative medication strategies. It upholds the client's right to refuse treatment.
Choice B rationale
Delegating medication administration to an assistive personnel (AP) is inappropriate as medication administration is a complex nursing function requiring assessment, judgment, and patient education, which are outside the scope of practice for an AP. An AP's role is typically limited to basic care activities, and they are not trained or authorized to administer medications.
Choice C rationale
Notifying the pharmacist is not the immediate or primary action when a client refuses medication. While the pharmacist may offer insights into alternative formulations or administration routes, the nurse's initial responsibility is to understand the client's refusal, document it, and then notify the prescribing provider for a revised plan of care.
Choice D rationale
Mixing medication in juice without the client's explicit consent is considered a breach of the client's autonomy and can be construed as coercive or deceptive. It violates the client's right to self-determination and informed consent regarding their treatment. Medications should only be administered with the client's knowledge and cooperation.
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