Correct Answer: C

Rationale: The correct answer is C: 'Productive cough with clear sputum.' Clients with COPD often have a chronic productive cough with thick, often purulent sputum. This sputum can be white, yellow, green, or clear. Choices A, B, and D are incorrect. Oxygen saturation may decrease with exertion in COPD due to impaired gas exchange. Pursed-lip breathing is used to control dyspnea, not directly related to increased saturation with exercise. Clubbing of the fingers is typically seen in conditions such as cyanotic heart disease or lung cancer.

Correct Answer: B

Rationale: Maintaining the chest tube drainage system below the client's chest level is crucial to ensure proper drainage and prevent complications. Clamping the chest tube can lead to a tension pneumothorax, stripping the chest tube is an outdated practice that can cause damage to the tissues, and keeping the collection device at the level of the client's chest can impede proper drainage and lead to fluid accumulation.

Correct Answer: C

Rationale: The correct action the nurse should take when administering potassium chloride IV to a client with hypokalemia is to infuse the medication at a rate of 10 mEq/hr. This slow infusion rate is crucial to prevent the development of hyperkalemia, a potentially dangerous condition. Option A is incorrect because giving the medication as a bolus over 10 minutes can lead to adverse effects. Option B is incorrect as potassium chloride does not necessarily need to be diluted before administration in this scenario. Option D is incorrect as administering the medication undiluted can also increase the risk of hyperkalemia.

Correct Answer: B

Rationale: Numbness and tingling of the fingers are classic signs of hypocalcemia, a condition that may result from inadvertent damage to the parathyroid glands during a thyroidectomy. These symptoms occur due to decreased levels of calcium in the bloodstream affecting nerve function. Choices A, C, and D are not typical manifestations of hypocalcemia. Constipation is more associated with hypercalcemia, increased thirst can be seen in diabetes or dehydration, and frequent urination is a symptom more commonly linked to conditions like diabetes or urinary tract issues.

Correct Answer: D

Rationale: The correct answer is D: "I will take this medication in the morning before breakfast." Levothyroxine should be taken in the morning before breakfast to improve absorption and effectiveness. Choice A is incorrect because the duration of levothyroxine therapy is usually long-term and not limited to 3 months. Choice B is incorrect because levothyroxine should not be taken with antacids as they may decrease its absorption. Choice C is incorrect because there is no need to avoid foods that contain iodine while taking levothyroxine.