Correct Answer: A

Rationale: The correct signs and symptoms of Cushing's syndrome are weight gain and a moon face. Corticosteroids are used to manage Cushing's syndrome by reducing the overproduction of cortisol. Choice B is incorrect because hirsutism and thin extremities are not typical signs of Cushing's syndrome. Choice C is incorrect as purple striae and muscle weakness are more characteristic of the syndrome. Choice D is also incorrect as hypertension and bruising are not primary signs of Cushing's syndrome.

Correct Answer: B

Rationale: The correct answer is to check for air leaks and ensure the proper functioning of the chest tube. This action is crucial post-op to prevent complications such as pneumothorax or hemothorax. Clamping the chest tube every 2 hours (Choice A) is incorrect as it can lead to a buildup of pressure within the chest, risking complications. Encouraging deep breathing and coughing every 2 hours (Choice C) is important for respiratory hygiene but not the priority over ensuring the chest tube's proper function. Encouraging frequent coughing to clear secretions (Choice D) is not the priority when assessing a chest tube post-op; ensuring the chest tube's integrity and function take precedence.

Correct Answer: A

Rationale: The correct technique for administering an intramuscular (IM) injection is to locate the injection site and insert the needle at a 90-degree angle. This angle ensures that the medication is delivered into the muscle for proper absorption. Choice B is incorrect because a 45-degree angle is typically used for subcutaneous injections, not intramuscular. Choice C is incorrect as massaging the site after an injection can cause the medication to disperse unevenly. Choice D is incorrect as a 15-degree angle would not reach the muscle layer effectively for an IM injection.

Correct Answer: C

Rationale: A prothrombin time (PT) of 12 seconds is below the therapeutic range for warfarin and indicates a need for dosage adjustment. The correct answer is C. A normal International normalized ratio (INR) for a client on warfarin therapy is usually between 2.0 to 3.0; therefore, an INR of 2.5 is within the expected range. A platelet count of 180,000/mm³ is within the normal range (150,000 to 450,000/mm³) and does not require immediate reporting. A partial thromboplastin time (PTT) of 30 seconds is also within the normal range (25-35 seconds) and does not indicate a need for urgent action.

Correct Answer: A

Rationale: The signs of hypoglycemia include shakiness, confusion, hunger, dizziness, and lightheadedness. However, the classic and most common early sign is shakiness or tremors. When a patient is experiencing hypoglycemia, a healthcare provider should respond promptly by administering glucose to raise the blood sugar levels. Choice A is correct as it directly addresses one of the primary signs of hypoglycemia. Choices B, C, and D are incorrect because while confusion, irritability, hunger, dizziness, and lightheadedness can also be signs of hypoglycemia, shakiness or tremors are the classic and most common early symptoms that healthcare providers should be particularly vigilant for.