Correct Answer: A

Rationale: The most important nursing intervention for a patient with a suspected pulmonary embolism is to administer anticoagulants. Anticoagulants help prevent further clot formation in the patient's blood vessels, reducing the risk of complications such as worsening of the pulmonary embolism or development of new clots. Administering oxygen (Choice B) may be necessary to support the patient's oxygenation, but anticoagulants take precedence as they target the underlying cause of the pulmonary embolism. Repositioning the patient (Choice C) and monitoring oxygen saturation (Choice D) are important aspects of patient care but are not the primary intervention for a suspected pulmonary embolism.

Correct Answer: A

Rationale: The best position for a patient with respiratory distress is the Semi-Fowler's position. This position promotes lung expansion and improves oxygenation by allowing the chest to expand more fully. The Trendelenburg position, where the patient's feet are higher than the head, is contraindicated in respiratory distress as it can increase pressure on the diaphragm and compromise breathing. The prone position, lying face down, may be beneficial in certain cases like acute respiratory distress syndrome but is not generally recommended for all patients in respiratory distress. The supine position, lying flat on the back, can worsen respiratory distress by causing the tongue to fall back and obstruct the airway.

Correct Answer: A

Rationale: Choice A is the correct answer because consuming a snack when the blood glucose level is below 70 mg/dL helps prevent hypoglycemia in clients with diabetes mellitus. Choice B is incorrect because taking insulin when blood glucose is high (above 200 mg/dL) helps manage hyperglycemia, not hypoglycemia. Choice C is incorrect as checking blood glucose levels once a week is insufficient for proper diabetes management, which typically requires more frequent monitoring. Choice D is incorrect because waiting for symptoms of hyperglycemia to take insulin can lead to uncontrolled blood glucose levels.

Correct Answer: B

Rationale: The correct answer is B: Pallor. Pallor, which is paleness of the skin, is a common sign of anemia due to a decreased number of red blood cells or hemoglobin levels. This results in reduced oxygen-carrying capacity, leading to the paleness of the skin. Choice A, increased appetite, is not typically associated with anemia. Choice C, tachycardia (increased heart rate), can be present in anemia as the body compensates for decreased oxygenation. Choice D, hypertension (high blood pressure), is not a common finding in anemia; instead, low blood pressure may be observed due to decreased blood volume.

Correct Answer: A

Rationale: Administering oxygen is the initial action for a healthcare provider when a patient presents with shortness of breath because it helps alleviate the patient's symptoms by improving oxygenation. Providing oxygen takes precedence over other actions such as repositioning the patient, checking for abnormal breath sounds, or assessing oxygen saturation. While these actions are important, ensuring the patient has an adequate oxygen supply is crucial in the initial management of shortness of breath.