A 70-year-old woman who loves to garden has small, flat, brown macules over her arms and hands. She asks, "What causes these liver spots?' The nurse tells her:

Correct Answer: C

Rationale: The correct answer is C because the small, flat, brown macules described are consistent with lentigines (commonly known as age or liver spots), which are clusters of melanocytes that appear after prolonged sun exposure. This explanation directly addresses the patient's question about the cause of the spots and is supported by the clinical presentation. Choice A is incorrect because decreased hematocrit related to anemia would not cause these specific skin changes. Choice B is incorrect as destruction of melanin due to sun exposure would result in lighter spots, not dark brown macules. Choice D is incorrect because hyperpigmentation related to decreased perfusion and vasoconstriction would present differently and not primarily on sun-exposed areas like the arms and hands.

Correct Answer: C

Rationale: The correct answer is C: Pneumonia. The patient's symptoms of shortness of breath and cough with thick, green sputum suggest an acute infection in the lungs. Pneumonia is characterized by inflammation and infection of the lung tissue, leading to symptoms such as productive cough, shortness of breath, and sputum production. It is a serious condition that requires prompt treatment with antibiotics. A: Asthma typically presents with wheezing, chest tightness, and shortness of breath triggered by certain stimuli, but not usually with thick, green sputum. B: Bronchitis is inflammation of the bronchial tubes, characterized by cough with clear or slightly discolored sputum, not typically thick and green. D: Pulmonary embolism is a blockage in the arteries of the lungs, causing sudden shortness of breath and chest pain, but not usually associated with green sputum production.

Correct Answer: A

Rationale: 1. Increased sputum production is a sign of COPD exacerbation due to worsening inflammation and mucus production. 2. Decreased respiratory rate is not typical in COPD exacerbation as patients often experience increased respiratory effort. 3. Low blood pressure is not a common sign of COPD exacerbation and is more likely related to other conditions or medications. 4. High fever is not a typical sign of COPD exacerbation and could indicate an infection or other underlying issue.

Correct Answer: B

Rationale: The correct answer is B: Encouraging early ambulation. This is crucial post-total hip replacement to prevent complications such as blood clots, pneumonia, and muscle weakness. Early ambulation helps improve circulation, prevent stiffness, and promote faster recovery. Monitoring for infection (A) is important but not the top priority. Administering pain medications (C) and wound care (D) are essential but do not address the primary goal of preventing complications post-operatively.

Correct Answer: A

Rationale: The correct answer is A: I will take my rescue inhaler only during an asthma attack. This statement indicates a need for further education because using a rescue inhaler only during an asthma attack is not the correct way to manage asthma. The purpose of a rescue inhaler is to provide quick relief during an asthma attack, but it should also be used as a preventive measure before exposure to known triggers or before exercise to prevent symptoms. Options B, C, and D all demonstrate good understanding of asthma management by indicating the importance of avoiding triggers, using the inhaler preventively, and carrying the inhaler at all times for emergency situations.