Correct Answer: A

Rationale: The correct answer is A because applying theory in real situations allows nurses to analyze, evaluate, and problem-solve effectively. This promotes critical thinking by integrating knowledge into practice. Working with physicians (B) and following orders (C) do not directly enhance critical thinking as they focus more on collaboration and task completion. Developing nursing diagnoses (D) is important but does not specifically target critical thinking skills like applying theory does.

Correct Answer: D

Rationale: The correct answer is D because in children, the lung sounds can be different due to their thinner chest walls and more prominent bronchial markings. The louder, longer, and lower-pitched tones heard upon percussion are normal findings in pediatric patients, indicating increased air content in the lungs. Palpating for pain or tenderness (choice A) is not necessary as these findings are expected in children. Asking the child to take shallow breaths and percussing again (choice B) is not needed as the initial findings are normal for the age group. Referring the child immediately (choice C) is unnecessary as these findings are within the normal range for a 4-year-old.

Correct Answer: C

Rationale: The correct answer is C because stopping medication without consulting a healthcare provider can lead to uncontrolled hypertension. Choice A shows understanding of monitoring blood pressure, B demonstrates adherence to medication regimen, and D indicates awareness of dietary management. Choice C is incorrect because abruptly stopping medication can have serious health consequences, making further education necessary.

Correct Answer: A

Rationale: The correct answer is A because increased sputum production and shortness of breath are classic signs of exacerbation in COPD. This indicates worsening airflow limitation and potential respiratory distress. Monitoring these signs helps in early intervention and preventing further complications. B: Improved oxygen saturation is not a sign of exacerbation in COPD. It would actually suggest improvement in the patient's condition. C: Increased energy levels are not typical signs of exacerbation in COPD. Patients usually experience fatigue and weakness during exacerbations. D: Decreased respiratory rate is not indicative of exacerbation in COPD. It could be a sign of respiratory depression or sedation, but not exacerbation.

Correct Answer: B

Rationale: The correct answer is B: Cold, dry air. Cold, dry air is a common trigger for asthma exacerbations, as it can irritate the airways and lead to bronchoconstriction. This trigger can worsen asthma symptoms and increase the risk of an asthma attack. Educating the patient to avoid cold, dry air can help prevent asthma flare-ups. Explanation for why the other choices are incorrect: A: Exercise-induced asthma is triggered by physical activity but can be managed with proper warm-up and medication. It is not typically something to avoid altogether. C: Caffeine is a mild bronchodilator and can actually help alleviate asthma symptoms in some cases. D: Environmental allergens can trigger asthma in some individuals, but they vary from person to person, so avoidance strategies would depend on specific allergens identified through testing.