Correct Answer: B

Rationale: The correct answer is B: Providing a source of fast-acting carbohydrate. In hypoglycemia, the priority is to quickly raise the patient's blood sugar levels to prevent potential complications like seizures or loss of consciousness. Fast-acting carbohydrates, such as glucose tablets or juice, can rapidly increase blood sugar levels. Administering insulin (A) would further lower blood sugar levels, worsening the situation. Administering an oral hypoglycemic agent (C) is not appropriate in an acute hypoglycemic episode. Monitoring blood pressure (D) is important but not the priority in this situation.

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: A

Rationale: The correct answer is A: Encouraging early ambulation. Early ambulation helps prevent complications such as deep vein thrombosis and pulmonary embolism by improving circulation and preventing blood clots. It also promotes joint mobility and muscle strength. Providing pain medication (B) is important but not as crucial as preventing complications. Monitoring for signs of infection (C) is essential but not the most important intervention. Administering antibiotics before surgery (D) does not directly prevent post-operative complications related to knee replacement.

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.

Correct Answer: A

Rationale: The correct answer is A: "I will inspect my feet daily for cuts or blisters." This statement indicates proper understanding because daily foot inspection is crucial for early detection of any wounds, which can prevent complications in diabetic patients. Incorrect choices: B: Avoiding trimming toenails can lead to ingrown nails and potential injury. C: Wearing tight shoes can increase the risk of blisters and discomfort. D: Ignoring small wounds can lead to infections and more serious foot issues. In summary, choice A is correct as it promotes proactive foot care, while the other choices can potentially harm the patient's foot health.