Correct Answer: D

Rationale: The correct answer is D. Using pursed-lip breathing techniques is beneficial for clients with COPD as it helps control shortness of breath by keeping airways open longer. Option A is incorrect as deep breathing while using an incentive spirometer is essential to prevent complications such as atelectasis. Option B is incorrect because limiting fluid intake to 1 liter per day is not a standard recommendation for clients with COPD. Option C is incorrect as exercising in a humid area can exacerbate breathing difficulties for clients with COPD.

Correct Answer: C

Rationale: Respecting cultural preferences promotes trust and client-centered care.

Correct Answer: A

Rationale: Corrected Rationale: Applying heat to inflamed joints can help relieve pain in clients with osteoarthritis. Heat therapy can help improve blood circulation, relax muscles, and reduce stiffness. Choice B, providing passive range-of-motion exercises, may be beneficial for joint mobility but is not the first-line intervention for pain relief in osteoarthritis. Choice C, encouraging prolonged use of NSAIDs, should be done cautiously due to potential side effects and should be guided by a healthcare provider. Choice D, applying cold packs to the joints, is not recommended for osteoarthritis as cold therapy can worsen stiffness and discomfort in this condition.

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: D

Rationale: Corrected Rationale: Blurred vision is a classic sign of digoxin toxicity, indicating a potential overdose. It is crucial to recognize this symptom promptly and report it to the healthcare provider for immediate intervention. Bradycardia and nausea are common side effects of digoxin but not specific indicators of toxicity. Tachycardia is unlikely in digoxin toxicity since it usually causes a decrease in heart rate.