Correct Answer: B

Rationale: The correct instruction the nurse should include for a client prescribed metformin is to avoid drinking alcohol. Alcohol consumption while on metformin increases the risk of lactic acidosis, a serious condition. Taking metformin at bedtime (choice A) is not a standard instruction. Eating 3 large meals each day (choice C) is not specific to metformin use and may not be suitable for all individuals. Reporting muscle pain (choice D) is important but not directly related to metformin use.

Correct Answer: B

Rationale: The correct answer is B: Mouth sores. Mouth sores are a common side effect of radiation therapy, especially when the treatment is focused on the head or neck area. Weight gain is not typically associated with radiation therapy; instead, clients may experience weight loss due to side effects like nausea and loss of appetite. Hyperpigmentation is not a common finding related to radiation therapy. Increased saliva production is not a typical side effect of radiation therapy; instead, clients may experience dry mouth.

Correct Answer: D

Rationale: The correct answer is D. Montelukast should be taken daily in the evening for long-term control of asthma, rather than for immediate relief. Choice A is incorrect because montelukast is not used for acute asthma attacks. Choice B is incorrect as montelukast works by blocking leukotrienes, not by decreasing swelling and mucus production. Choice C is incorrect as montelukast is not specifically taken before exercise.

Correct Answer: B

Rationale: The correct answer is B: Inability to identify common objects. Clients with schizophrenia often experience cognitive deficits, such as difficulty in identifying common objects. This can be attributed to impairments in perception and cognition. Choices A, C, and D are not typically associated with schizophrenia. Decreased level of consciousness is more indicative of conditions like head injuries or metabolic disturbances. Preoccupation with somatic disturbances is commonly seen in somatic symptom disorders, not schizophrenia. Poor problem-solving ability is a characteristic of conditions affecting executive functioning like dementia, rather than schizophrenia.

Correct Answer: D

Rationale: The correct answer is D, 'Take with a glass of orange juice.' Ferrous sulfate is best absorbed with vitamin C, making orange juice the preferred choice. Choices A, B, and C are incorrect because taking ferrous sulfate with meals, at bedtime, or with milk can reduce its absorption due to interactions with food components like calcium, inhibiting the iron absorption process.