A nurse is teaching a client who has a new prescription for disulfiram. Which of the following information should the nurse include in the teaching?

A. Bleeding: While haloperidol can cause side effects such as orthostatic hypotension and sedation, it is not typically associated with bleeding as a common adverse effect.

B. Pancreatitis: Pancreatitis is not a common adverse effect of haloperidol. However, it can cause gastrointestinal side effects such as constipation, nausea, and vomiting.

C. Cataracts: Haloperidol is not known to cause cataracts. However, long-term use of antipsychotic medications, including haloperidol, may increase the risk of developing metabolic side effects such as weight gain, dyslipidemia, and hyperglycemia, which can contribute to conditions like diabetes and potentially increase the risk of cataracts.

D. Dysrhythmias: Haloperidol can prolong the QT interval on an electrocardiogram (ECG), leading to an increased risk of dysrhythmias, including torsades de pointes. This risk is particularly important in clients with preexisting cardiovascular conditions or those taking other medications that can prolong the QT interval. Therefore, nurses should monitor clients receiving haloperidol for signs of dysrhythmias, including palpitations, dizziness, and syncope, and promptly report any abnormalities to the healthcare provider.

A. "Do not drink alcohol while taking this medication": Disulfiram is a medication used to deter alcohol consumption by producing unpleasant effects, such as nausea, vomiting, and flushing, if alcohol is consumed. Therefore, it is crucial for the client to abstain from alcohol while taking disulfiram to avoid these adverse reactions.

B. "Do not crush this medication before swallowing": While it is generally important not to alter the formulation of medications unless instructed by a healthcare provider or indicated in the medication's instructions, crushing disulfiram is not typically a concern. However, the primary focus of disulfiram therapy is the avoidance of alcohol, rather than specific administration instructions.

C. "Avoid grapefruit juice while taking this medication": Grapefruit juice is known to interact with certain medications by inhibiting cytochrome P450 enzymes in the liver, affecting drug metabolism. However, there is no significant interaction between disulfiram and grapefruit juice. Therefore, this information is not relevant to disulfiram therapy.

D. "Take this medication with food": Disulfiram is typically taken on an empty stomach, as food can interfere with its absorption. Therefore, advising the client to take disulfiram with food is not accurate and may compromise its effectiveness. The primary concern with disulfiram therapy is adherence to abstinence from alcohol.