A nurse is caring for a patient with heart failure who has developed pulmonary edema. What is the nurse's priority action?

Correct Answer: B

Rationale: The correct answer is to place the patient in a high Fowler's position. This position helps improve lung expansion and oxygenation in cases of pulmonary edema by reducing venous return to the heart and enhancing respiratory mechanics. Administering a diuretic (Choice A) can be important but is not the priority over positioning in this situation. Administering oxygen (Choice C) is essential, but the priority action for improving oxygenation is the positioning of the patient. Monitoring lung sounds (Choice D) is crucial for ongoing assessment but is not the priority action when the patient is in distress with pulmonary edema.

Correct Answer: B

Rationale: The most effective intervention in preventing deep vein thrombosis (DVT) in a postoperative patient is to encourage early ambulation and leg exercises. Early ambulation helps promote circulation, preventing stasis and reducing the risk of blood clot formation. Encouraging the patient to drink plenty of fluids (choice A) is important for overall health but is not the most effective intervention for preventing DVT. Administering anticoagulants (choice C) is a valuable intervention in some cases, but it may not be suitable for all postoperative patients. Applying compression stockings (choice D) can help prevent DVT but is generally not as effective as early ambulation and leg exercises in postoperative patients.

Correct Answer: B

Rationale: The correct answer is to discontinue the medication and notify the healthcare provider when a patient is experiencing an allergic reaction to a medication. This action is crucial to prevent further harm to the patient. Monitoring blood pressure (choice A) or urine output (choice D) may be important but is not the priority when managing an allergic reaction. Administering an antihistamine (choice C) should only be done after discontinuing the medication and consulting with the healthcare provider.

Correct Answer: C

Rationale: Elevating the head of the bed to 30-45 degrees is the most appropriate intervention to prevent aspiration in a patient with an NG tube. This position helps reduce the risk of regurgitation and aspiration by promoting the proper flow of contents through the gastrointestinal tract and minimizing the chances of stomach contents entering the airway. Flushing the NG tube with water before each feeding may not directly prevent aspiration. Checking the placement of the NG tube is important but does not specifically address the prevention of aspiration. Providing oral care every 4 hours is essential for maintaining oral hygiene but is not directly related to preventing aspiration in a patient with an NG tube.