A nurse is caring for a patient with a history of asthma. The nurse should educate the patient to avoid which of the following triggers?

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: 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: C

Rationale: The correct answer is C: Deep vein thrombosis (DVT). After knee replacement surgery, the patient is at a higher risk for developing DVT due to immobility and altered blood flow. Monitoring for signs such as calf pain, swelling, and redness is crucial to prevent complications like pulmonary embolism. Pulmonary embolism (Choice A) is a potential complication of untreated DVT. Gastrointestinal bleeding (Choice B) is not directly related to knee replacement surgery. Hypoglycemia (Choice D) is not a common complication post-knee replacement. Monitoring for DVT is essential in preventing life-threatening complications for the patient.

Correct Answer: A

Rationale: The correct answer is A. Encouraging early ambulation and use of compression stockings is crucial post-abdominal surgery to prevent complications like deep vein thrombosis and pneumonia. Ambulation helps prevent blood clots and promotes lung expansion. Compression stockings aid in preventing blood pooling in the legs. Administering pain medication regularly (B) is important but not the priority. Monitoring for infection (C) is essential but not the priority immediately post-op. Providing nutritional support and hydration (D) is important but not as critical as preventing immediate complications.

Correct Answer: D

Rationale: The correct answer is D: Pitting edema and weight gain. In chronic heart failure, worsening symptoms indicate fluid retention. Pitting edema in the extremities and weight gain are signs of fluid overload, indicating worsening heart failure. It is crucial for the nurse to monitor these signs to prevent exacerbation. Fatigue and shortness of breath (Choice A) are common symptoms in heart failure but not specific to worsening condition. Increased urine output (Choice B) is not typically seen in worsening heart failure as the kidneys may be compromised. Decreased blood pressure (Choice C) can occur in acute decompensation but is not a consistent sign of worsening chronic heart failure.