Correct Answer: A

Rationale: The most important action a client can take to protect against errors is to bring a list of all medications and their purposes. This helps ensure that the healthcare team has accurate information about the client's medications, reducing the risk of medication errors, which are the most common type of healthcare mistake. Knowing the medications and their purposes can also aid in preventing drug interactions and adverse effects during the surgical procedure.

Correct Answer: D

Rationale: The correct first intervention for a client experiencing hypoglycemia is administering 15-20 grams of fast-acting carbohydrate orally. If the client is conscious and able to swallow, providing quick-acting carbohydrates helps raise blood glucose levels rapidly and effectively. This approach is preferred over other options like administering insulin, dextrose solution intravenously, or glucagon, which are not the initial interventions for hypoglycemia.

Correct Answer: D

Rationale: The priority action for the nurse is to assess the client's mental status and level of consciousness. This assessment helps determine if the decreased respiratory rate is affecting the client's oxygenation. By evaluating the client's mental status and level of consciousness, the nurse can promptly identify any signs of respiratory distress or hypoxia, allowing for timely intervention and appropriate adjustments to the oxygen therapy or other treatments.

Correct Answer: C

Rationale: An inotropic agent is a medication that increases the force of the heart's contractions, which helps improve cardiac output. Choice A and B are incorrect as inotropic agents do not constrict or dilate vessels. Choice D is also incorrect as inotropic agents do not slow down the heart rate but rather enhance the heart's contractility.

Correct Answer: C

Rationale: Assessing for signs of bleeding is the priority when caring for a client with deep vein thrombosis (DVT) receiving heparin therapy. Heparin therapy increases the risk of bleeding complications, so monitoring for signs of bleeding is crucial to ensure patient safety and timely intervention if needed.