A nurse is evaluating the response of a client who received twice the prescribed dose of digoxin. Which of the following actions should the nurse take first?

Topiramate is a broad-spectrum anticonvulsantused for seizure control and migraine prophylaxis. It modulates voltage-gated sodium channels and enhances GABAergictransmission. For patients with dysphagia, the "sprinkle" formulation allows for oral administration without requiring the client to swallow a whole, large capsule shell.

Rationale:

A.Mixing the contents to be taken over several hours is incorrect because the entire dose must be consumed immediately to ensure therapeutic serum levels. Delayed consumption can lead to subtherapeutic dosing and an increased risk of breakthrough seizures. The nurse must supervise the administration to confirm that the full 25 mg dose is ingested in a single sitting.

B.Mixing the contents of the capsule in a spoonful of soft food, such as applesauce or pudding, is the recommended method for clients with difficulty swallowing. This technique ensures the medication is safely transported past the oropharynx without the risk of aspiration or choking. It is important that the food is not chewed, as the medication particles have a bitter taste.

C.Placing the contents on the tongue to dissolve is inappropriate for topiramate capsules. The medication is not formulated as an orally disintegrating tablet (ODT) and will not dissolve efficiently in the mouth. Furthermore, the taste of the undiluted medication is highly unpleasant and can cause mucosal irritation, leading to poor patient compliance and distress during administration.

D.Chewing the capsule or its contents is contraindicated because it can destroy the intended release profile and cause an immediate, unpleasant taste. Topiramate particles should be swallowed whole to avoid irritation of the mouth and throat. Chewing also increases the risk of the medication getting stuck in dental crevices, preventing the full dose from reaching the stomach for absorption.

Disulfiram is an aldehyde dehydrogenase inhibitorused as an aversion therapy for alcohol use disorder. It causes the accumulation of acetaldehydein the blood if ethanol is consumed, leading to a highly unpleasant and dangerous disulfiram-ethanol reaction. This reaction can escalate from mild discomfort to cardiovascular collapse and respiratory failure.

Rationale:

A.A headache is a distressing part of the disulfiram-ethanol reaction, but it is not the most life-threatening symptom. While the client may experience significant throbbing and pain, the nurse must prioritize the assessment of ABCs (airway, breathing, and circulation). A headache does not signal the immediate hemodynamic instability that requires the highest level of emergency medical intervention.

B.Flushing of the face and neck occurs due to acetaldehyde-induced vasodilation and is one of the first signs of the reaction. While visually prominent, flushing itself does not pose an immediate threat to the client’s life. The nurse should document the finding but focus on identifying more severe symptoms that indicate the client is entering a stage of cardiovascular shock.

C.Hypotension is the priority finding because it indicates severe cardiovascular collapse resulting from profound vasodilation and increased capillary permeability. Significant drops in blood pressure during a disulfiram reaction can lead to shock, myocardial infarction, or death. The nurse must report this immediately so that emergency resuscitation, including intravenous fluids and vasopressors, can be initiated to stabilize the client.

D.Nausea and vomiting are very common during the disulfiram-ethanol reaction and serve as the primary "aversion" mechanism of the drug. Although these symptoms are highly uncomfortable and can lead to dehydration, they are not as immediately fatal as profound hypotension. The nurse should manage the vomiting but prioritize reporting the signs of circulatory failure to the healthcare provider.