Correct Answer: D

Rationale: The correct answer is D because a blood pressure drop or other signs of morphine overdose should be reported, especially when using a PCA pump. Choices A, B, and C are within normal limits and do not indicate an immediate concern related to morphine administration.

Correct Answer: B

Rationale: The correct answer is to inject the medication into the lateral abdominal wall when administering enoxaparin. This is the recommended technique to ensure proper absorption and prevent tissue damage. Choice A is incorrect because enoxaparin should be administered subcutaneously, not intramuscularly. Choice C is incorrect as massaging the injection site after administration is not recommended, as it can cause bruising and discomfort. Choice D is incorrect because the prefilled syringe should not be discarded after expelling the air bubble; it should be used for the injection.

Correct Answer: C

Rationale: The correct instruction the nurse should include is to perform weight-bearing exercises regularly. Weight-bearing exercises help maintain bone density and reduce the risk of fractures in clients with osteoporosis. Increasing intake of calcium-rich foods (Choice A) is also beneficial for bone health. Avoiding weight-bearing exercises (Choice B) is incorrect as these exercises are essential for strengthening bones. Avoiding calcium supplements (Choice D) may not be necessary if the client's dietary intake is inadequate.

Correct Answer: A

Rationale: Clients should avoid consuming any food or drink for 8 hours before the glucose tolerance test to ensure accurate results. Choice A is the correct instruction for the client preparing for a glucose tolerance test. Drinking water, taking an antacid, or consuming milk before the test can interfere with the accuracy of the results. Water or any other substance might affect the concentration of glucose in the blood, leading to inaccurate test results. Antacids and milk can also interfere with the test outcome. Therefore, the client should follow the instruction to fast for 8 hours before the test.

Correct Answer: C

Rationale: An INR of 2.5 indicates a therapeutic level for a patient on warfarin. The INR (International Normalized Ratio) is the most accurate way to monitor and adjust warfarin doses. An INR of 1.1 (Choice A) is below the therapeutic range, indicating a need for an increased dose. PT (Prothrombin Time) of 12 seconds (Choice B) is not specific for warfarin therapy monitoring. Platelet count (Choice D) is not directly related to monitoring warfarin therapy.