Correct Answer: D

Rationale: In clients with second-degree heart block, beta blockers such as metoprolol (Toprol SR) are contraindicated as they can further decrease the heart rate. Administering metoprolol in this situation can lead to serious complications. The correct action for the nurse to take is to hold the scheduled dose of Toprol and promptly notify the healthcare provider of the telemetry pattern. This ensures patient safety and appropriate management of the cardiac condition. Choices A, B, and C are incorrect because administering Toprol despite the heart block can worsen the condition and pose a risk to the client's health.

Correct Answer: B

Rationale: Scheduling weekly home visits to monitor hCG levels is critical for early detection of choriocarcinoma, a potential complication of GTD. Choice A is incorrect because a home pregnancy test is not the appropriate method to monitor for choriocarcinoma. Choice C is less frequent than necessary for close monitoring. Choice D is incorrect as chemotherapy administration should be based on confirmed diagnosis and treatment plan, not initiated during the first home visit.

Correct Answer: B

Rationale: To calculate the volume to be administered for 35 mg of ceftazidime, divide the prescribed dose by the concentration: 35 mg / 100 mg/ml = 0.35 ml. Rounding off, the nurse should administer 0.4 ml for each dose. Choice A is incorrect as it doesn't consider rounding off. Choice C is incorrect because it's not the correct calculation. Choice D is incorrect as it doesn't reflect the accurate volume needed.

Correct Answer: A

Rationale: The correct answer is A: 'Have you had any difficulty starting your urinary stream?' This question is the most relevant as difficulty starting urination can indicate an obstruction, which aligns with the client's current condition of postrenal obstruction causing acute renal failure. Choice B is incorrect as a history of kidney stones may not be directly related to the current obstruction. Choice C, asking about daily fluid intake, is not specific to the current issue of postrenal obstruction. Choice D inquires about previous urinary tract infections, which are not directly related to the current acute renal failure caused by postrenal obstruction.

Correct Answer: A

Rationale: The correct answer is to place the side rails in an up position first. This action is essential to prevent the client from falling while the bed is being made. Assisting the UAP in turning the client (Choice B) is not the immediate priority. Providing instructions on bed-making techniques (Choice C) can wait until the safety of the client is ensured. Asking the client if they are comfortable (Choice D) is important but should come after ensuring the client's safety by raising the side rails.