Correct Answer: B

Rationale: The correct answer is B: 'Serum calcium level of 8.0 mg/dL.' A low serum calcium level indicates hypocalcemia, which is a potential complication of thyroidectomy that can lead to life-threatening consequences, such as tetany or laryngospasm. Therefore, it is crucial for the nurse to report this finding promptly to the provider for timely intervention. Choices A, C, and D are important assessments following a thyroidectomy but are not as critical as detecting and addressing hypocalcemia, which can have serious implications for the client's health.

Correct Answer: D

Rationale: Spinach is an excellent choice to recommend as it is rich in non-heme iron, which can help improve iron levels in clients with iron deficiency anemia. Eggs (Choice A) are a good source of protein but do not contain as much iron as spinach. Carrots (Choice B) are rich in vitamin A but are not a significant source of iron. White bread (Choice C) is not a good source of iron compared to spinach.

Correct Answer: B

Rationale: The correct answer is to instruct the client to avoid lifting heavy objects for at least 6 weeks after a mastectomy. This is important to prevent complications and promote proper healing. Choice A is incorrect because tight-fitting bras can increase the risk of lymphedema and discomfort. Choice C is incorrect as sleeping on the affected side can cause discomfort and interfere with healing. Choice D is incorrect as initiating arm exercises too soon after surgery can strain the surgical site and hinder recovery.

Correct Answer: A

Rationale: The correct answer is to ensure the eye shield is covering the eyes. Protecting the newborn's eyes from exposure to direct light is crucial during phototherapy to prevent potential eye damage. Applying lotion to the exposed skin (choice B) is not recommended as it can interfere with the effectiveness of the phototherapy. Offering glucose water between feedings (choice C) is not necessary and may not be suitable for a newborn undergoing treatment. Discontinuing breastfeeding during treatment (choice D) is not recommended as breast milk provides essential nutrients and hydration for the newborn, and breastfeeding should continue unless contraindicated by a specific medical condition.

Correct Answer: A

Rationale: The correct answer is A: 'The client's urine output decreases.' Desmopressin is used to treat diabetes insipidus by reducing excessive urine output. Therefore, a decrease in urine output indicates that the medication is effectively controlling the symptoms. Choices B, C, and D are incorrect because desmopressin primarily affects urine output, not blood pressure, heart rate, or urine specific gravity.