Correct Answer: D

Rationale: The correct answer is D. Dark, tarry stools indicate gastrointestinal bleeding, which is a serious side effect of enoxaparin that requires immediate medical attention. Reporting this finding promptly is crucial to prevent further complications. Choices A, B, and C are within normal ranges and are not directly related to the adverse effects of enoxaparin, so they do not take precedence over the urgent concern of gastrointestinal bleeding.

Correct Answer: A

Rationale: Naloxone is the correct answer. Naloxone is the standard medication for reversing opioid overdose by blocking opioid receptors. Choice B, Epinephrine, is used to treat severe allergic reactions (anaphylaxis) and cardiac arrest, not opioid overdose. Choice C, Lidocaine, is a local anesthetic used for numbing purposes and managing certain types of arrhythmias, not for opioid overdose. Choice D, Atropine, is used to treat bradycardia, organophosphate poisoning, and nerve agent toxicity, not opioid overdose.

Correct Answer: A

Rationale: The correct answer is to administer bronchodilators as the priority nursing action for a patient experiencing an acute asthma attack. Bronchodilators help open the airways and improve airflow, which is crucial in managing the acute respiratory distress in asthma. Corticosteroids may be used subsequently to reduce inflammation, but in the acute phase, bronchodilators take precedence. Providing supplemental oxygen is important but may not address the underlying bronchoconstriction characteristic of an asthma attack. Starting IV fluids is not a priority in managing an acute asthma attack unless indicated for specific reasons such as dehydration.

Correct Answer: C

Rationale: The correct instruction the nurse should include is to perform weight-bearing exercises regularly. Weight-bearing exercises help maintain bone density and reduce the risk of fractures in clients with osteoporosis. Increasing intake of calcium-rich foods (Choice A) is also beneficial for bone health. Avoiding weight-bearing exercises (Choice B) is incorrect as these exercises are essential for strengthening bones. Avoiding calcium supplements (Choice D) may not be necessary if the client's dietary intake is inadequate.

Correct Answer: C

Rationale: Elevating the head of the bed to 45 degrees during feedings is the correct intervention to prevent aspiration in clients with a nasogastric tube. This position helps reduce the risk of regurgitation and subsequent aspiration of stomach contents into the lungs. Flushing the tube with water before feedings (Choice A) is not necessary for preventing aspiration. Checking for gastric residuals (Choice B) helps monitor feeding tolerance but does not directly prevent aspiration. Placing the client in the left lateral position (Choice D) is not specifically indicated for preventing aspiration in a client with a nasogastric tube.