Correct Answer: D

Rationale: The ABG results show a pH above the normal range (7.35-7.45) and a decreased PCO2, indicating respiratory alkalosis. In respiratory alkalosis, the pH is increased and the PCO2 is decreased. Metabolic acidosis (choice A) would present with a low pH and low HCO3 levels. Metabolic alkalosis (choice B) would show an increased pH and HCO3 levels. Respiratory acidosis (choice C) would have a low pH and an increased PCO2.

Correct Answer: D

Rationale: The correct action for the nurse to take to insert a nasogastric tube safely and easily is asking the client to swallow as the tube is being advanced. This action helps facilitate the passage of the tube through the esophagus into the stomach. Placing the tube in warm water (Choice A) is not a recommended practice for nasogastric tube insertion. Hyperextending the head (Choice B) can cause discomfort and is not necessary for safe insertion. Removing the tube if resistance is met (Choice C) is incorrect as it may cause harm or discomfort to the client. Asking the client to swallow helps the tube pass more smoothly and comfortably.

Correct Answer: C

Rationale: The client should wear comfortable rubber-soled shoes, such as sneakers, for the exercise stress test. This choice ensures safety and stability during the procedure. Wearing sweatpants and a heavy sweatshirt (Choice A) would not be appropriate as the client needs to wear light, loose, comfortable clothing. Eating a small meal just before the procedure (Choice B) could lead to discomfort during the test. Avoiding caffeine for 30 minutes before the procedure (Choice D) is not a specific instruction related to the attire or preparation for the test.

Correct Answer: D

Rationale: The most crucial action for the nurse when preparing a client for intravenous pyelography (IVP) is to question the client about allergies to iodine or shellfish. Some IVP dyes contain iodine, and if the client is allergic to iodine or shellfish, they may experience severe allergic reactions such as itching, hives, rash, throat tightness, difficulty breathing, or bronchospasm. Administering a sedative (Choice A) may be needed for relaxation during the procedure, encouraging fluid intake (Choice B) is generally beneficial but not the most crucial for IVP preparation, and administering radiopaque dye (Choice C) should only be done after confirming the client's safety regarding allergies to iodine or shellfish.

Correct Answer: A

Rationale: The correct answer is A: 'The tube is patent.' When the fluid in the water seal chamber rises and falls during inspiration and expiration, it indicates that the chest tube is patent, allowing for proper drainage. Choice B is incorrect because a kink in the tubing would obstruct the flow of fluid, leading to abnormal fluctuations in the water seal chamber. Choice C is incorrect as adding suction to the system is not indicated based on the described finding. Choice D is incorrect as the rising and falling of fluid in the water seal chamber is not indicative of the client retaining airway secretions.