Correct Answer: A

Rationale: When a client with an indwelling catheter reports a need to urinate, the nurse's initial action should be to check the catheter for patency. This is crucial to ensure that the catheter is not blocked, twisted, or kinked, which could lead to urinary retention. Reassuring the client without assessing the catheter could delay necessary interventions. Re-catheterizing the bladder with a larger-gauge catheter should not be the first step unless catheter patency is confirmed as an issue. Collecting a urine specimen for analysis is important but not the immediate priority when the client reports a need to urinate.

Correct Answer: B

Rationale: Hyperglycemia is the correct complication to monitor for in a client receiving total parenteral nutrition (TPN) due to the high glucose content of the solution. TPN solutions are rich in glucose, so monitoring blood glucose levels is crucial to prevent hyperglycemia. Hypoglycemia (Choice A) is less common with TPN due to the high glucose content, making hyperglycemia a more significant concern. Hypertension (Choice C) and hyperkalemia (Choice D) are not typically associated with TPN administration, making them incorrect choices in this scenario.

Correct Answer: B

Rationale: When initiating IV therapy in older adults, it is essential to use the tourniquet minimally or not at all to prevent potential injury to fragile skin or veins. The use of a tourniquet can lead to increased venous pressure and potentially cause vein damage in older adult clients. Choice A is incorrect because inserting the IV catheter without a tourniquet can make locating veins more challenging. Choice C is incorrect as inserting the IV catheter at a 45-degree angle is not a recommended practice and can increase the risk of complications. Choice D is incorrect because using a smaller gauge catheter may not be appropriate for older adults who may require a larger gauge catheter for adequate fluid administration.

Correct Answer: B

Rationale: Using a regular blood pressure cuff on a morbidly obese client will lead to a falsely high blood pressure reading. This occurs because the cuff is not appropriately sized for the client's arm circumference, resulting in increased pressure on the artery and an inaccurate high reading. Choice A is incorrect because the reading will be falsely high, not low. Choice C is incorrect as the reading will not be accurate with an incorrectly sized cuff. Choice D is incorrect because the reading will be affected by using the wrong cuff size.

Correct Answer: C

Rationale: The correct answer is to avoid taking antacids within 2 hours of phenytoin. Antacids can interfere with the absorption of phenytoin, reducing its effectiveness. Choice A is incorrect because phenytoin should not be taken with milk, as it may decrease its absorption. Choice B is unrelated to the medication and focuses on dental hygiene. Choice D is important but not directly related to phenytoin; it is more relevant to monitoring for adverse effects of the medication.