Correct Answer: A

Rationale: Dexamethasone, a glucocorticoid, is indicated for clients with brain cancer to decrease inflammation and swelling. It helps reduce cerebral edema and relieve pressure caused by the tumor, ultimately alleviating headaches. The purpose of prescribing dexamethasone in this case is not to improve concentration (choice B), induce sedation (choice C), or treat depression (choice D). Methylphenidate, a stimulant, is used for conditions like ADHD, not for brain cancer. Hydroxyzine, an antihistamine, is primarily used for anxiety and itching, not for brain cancer. Amitriptyline, a tricyclic antidepressant, is used for conditions like depression and neuropathic pain, not specifically for brain cancer-related headaches.

Correct Answer: A

Rationale: Dexamethasone, a glucocorticoid, is indicated for clients with brain cancer experiencing headaches as it decreases inflammation and swelling. It is commonly used to reduce cerebral edema and relieve pressure caused by the tumor. Methylphenidate (Choice B) is a central nervous system stimulant used in conditions like ADHD and narcolepsy, not for brain cancer headaches. Hydroxyzine (Choice C) is an antihistamine used for anxiety and allergic conditions, not indicated for brain cancer headaches. Amitriptyline (Choice D) is a tricyclic antidepressant used for depression, neuropathic pain, and migraine prophylaxis, but not typically indicated for brain cancer headaches.

Correct Answer: C

Rationale: Productive cough can indicate pulmonary toxicity, which is a known adverse effect of Amiodarone. Clients on Amiodarone should be monitored for signs of pulmonary toxicity such as cough, dyspnea, and chest pain. This is important to detect early and prevent serious complications. The other options are not typically associated with Amiodarone toxicity. Light yellow urine is not a common sign, tinnitus is more related to ear problems, and blue-gray skin discoloration is not a recognized symptom of Amiodarone toxicity.

Correct Answer: A

Rationale: The correct answer is A: 'I am frequently constipated.' Constipation is a common adverse effect of Verapamil, a calcium channel blocker. Verapamil can slow down intestinal motility, leading to constipation as a side effect. Choices B, C, and D are not typically associated with adverse effects of Verapamil. Increased urination is not a common side effect, skin peeling is not related to Verapamil use, and ringing in the ears is not a typical adverse effect of this medication.

Correct Answer: A

Rationale: The correct answer is A: 'Take this medication before meals.' Omeprazole is a proton pump inhibitor that is most effective in reducing stomach acid production when taken before meals. This timing helps the medication work optimally by inhibiting acid secretion that occurs in response to food intake. Choice B ('Take this medication with food') is incorrect because Omeprazole should be taken before meals. Choice C ('Take this medication at bedtime') is incorrect as the optimal timing is before meals, not at bedtime. Choice D ('Take this medication with antacids') is incorrect because Omeprazole should not be taken with antacids as they can interfere with its absorption.