Correct Answer: D

Rationale: The correct answer is D because it provides the medication (Metoprolol), dosage (5 mg), route of administration (IV), and timing (now), making it a complete prescription. Choices A, B, and C lack either the route of administration or timing, making them incomplete prescriptions. For choice A, it lacks the route of administration, and for choices B and C, they lack the timing of administration.

Correct Answer: C

Rationale: The correct answer is C. An elevated serum creatinine level can indicate impaired kidney function, which is crucial to report before administering enalapril. Enalapril, an ACE inhibitor, can affect kidney function, especially in patients with pre-existing renal impairment. Choices A, B, and D are within normal ranges and do not directly impact the initiation of enalapril therapy.

Correct Answer: D

Rationale: Corrected Rationale: Before administering enoxaparin, it is essential to review potassium levels to monitor for potential imbalances. Enoxaparin, a type of anticoagulant, does not directly affect PT, INR, or platelet count. Monitoring potassium levels is crucial to ensure the safety and effectiveness of the medication. PT and INR are typically used to monitor warfarin therapy, while platelet count is essential for assessing clotting function but is not directly related to enoxaparin administration.

Correct Answer: A

Rationale: The correct answer is A: Creatinine. Gentamicin can cause nephrotoxicity, leading to impaired kidney function. Monitoring creatinine levels helps the nurse detect any potential kidney damage. Choice B, Aspartate aminotransferase (AST), is not typically affected by gentamicin. Choice C, White blood cell count, is not directly related to gentamicin adverse effects. Choice D, Serum glucose, is not specifically monitored for gentamicin adverse effects.

Correct Answer: C

Rationale: After a total hip arthroplasty, it is crucial to prevent hip dislocation. Placing an abduction pillow between the client's legs helps maintain proper alignment and prevents the hip from dislocating. This position aids in keeping the hip in a neutral or slightly outwardly rotated position, reducing the risk of dislocation. Placing the client supine with a pillow between the legs (Choice A) or using a trochanter roll (Choice D) may not provide the same level of abduction and support needed to prevent hip dislocation. Placing a pillow under the client's knees (Choice B) does not provide the necessary support to maintain proper hip alignment in this situation.