Correct Answer: C

Rationale: The correct answer is C: Sodium 140 mEq/L. An elevated sodium level can affect the effectiveness of digoxin therapy and may lead to toxicity. Therefore, it is crucial to report this value to the provider. Potassium, calcium, and magnesium levels are important as well, but elevated sodium can have a more direct impact on digoxin therapy in this scenario.

Correct Answer: D

Rationale: The correct answer is to keep the client's head of the bed elevated to 45 degrees. This position helps prevent aspiration in clients with a nasogastric tube for gastric decompression by reducing the risk of reflux and promoting proper drainage. Choice A is incorrect because checking for bowel sounds is not directly related to the care of a nasogastric tube. Choice B is incorrect as flushing the NG tube every 24 hours is not a standard nursing practice and may lead to complications. Choice C is incorrect because providing sips of water may interfere with the purpose of gastric decompression, which is to keep the stomach empty.

Correct Answer: B

Rationale: The correct answer is B: Consume foods high in fiber and low in fat. Following a colon resection and a new colostomy, a high-fiber, low-fat diet is recommended to promote healing and reduce the risk of complications. Foods high in fiber help maintain bowel regularity and prevent constipation, which is crucial after this type of surgery. Choices A, C, and D are incorrect because avoiding foods high in protein, consuming foods high in vitamin C, or avoiding all raw vegetables are not the most appropriate dietary advice in this situation.

Correct Answer: C

Rationale: The correct answer is to insert the catheter at a 15-degree angle. This angle allows for easier venous access by ensuring proper catheter placement into the vein. Applying a tourniquet above the insertion site can help distend the vein for better visualization but is not the immediate action required for the insertion process. Shaving the area around the insertion site is not necessary unless there is excessive hair that may interfere with the insertion. Using an 18-gauge needle for insertion is a specific detail related to the equipment rather than the technique of insertion.

Correct Answer: C

Rationale: The correct action the nurse should take when caring for a child with cystic fibrosis receiving postural drainage is to hold the hand flat to perform percussion. This technique allows for effective chest physiotherapy. Choice A is incorrect because postural drainage should be performed before meals to prevent vomiting during the procedure. Choice B is incorrect because bronchodilators are typically administered before postural drainage to help open up the airways. Choice D is incorrect as the frequency of postural drainage may vary depending on the individual's condition, so performing it twice a day may not be appropriate for all patients.