Correct Answer: A

Rationale: For a patient with diarrhea, the priority is to manage dehydration by providing oral fluids and monitoring stool consistency. Option B suggesting administering antidiarrheal medications is not recommended as it may prolong the infection by preventing the body from expelling the infectious agent. Option C is incorrect because antibiotics are not routinely indicated for diarrhea unless there is a specific bacterial infection. Option D is not the most appropriate initial intervention for managing diarrhea since a low-fiber diet may not provide adequate nutrition for the patient or help resolve the underlying cause of diarrhea.

Correct Answer: A

Rationale: The correct answer is A: 'Apply counter-pressure for back pain.' Counter-pressure involves applying pressure to the lower back to alleviate pain during labor. This technique is a form of cutaneous stimulation, which can help with pain relief. Choice B, deep breathing exercises, is a form of relaxation technique and does not directly involve cutaneous stimulation. Choice C, visualizing the baby's head, is a mental imagery technique and does not involve physical stimulation of the skin. Choice D, massage therapy, is a tactile stimulation technique but is not specifically focused on back pain relief through counter-pressure.

Correct Answer: C

Rationale: The most appropriate position for a client post-lumbar puncture is the supine position. Placing the client in a supine position helps prevent spinal headaches by allowing the puncture site to seal effectively and reducing the risk of cerebrospinal fluid leakage. High Fowler's position, prone position, and sitting position are not recommended after a lumbar puncture as they may increase the risk of complications like spinal headaches.

Correct Answer: D

Rationale: The correct answer is D: Non-maleficence. Non-maleficence refers to the ethical principle of avoiding harm. In this scenario, the nurse questions the medication prescription to prevent potential harm to the client, demonstrating the principle of non-maleficence. Choice A, fidelity, pertains to being faithful and keeping promises, which is not the focus of the scenario. Choice B, autonomy, relates to respecting a client's right to make decisions about their care, not the nurse's actions. Choice C, justice, involves fairness and equal treatment, which is not directly applicable to the nurse questioning a medication prescription to prevent harm.

Correct Answer: B

Rationale: Tingling and numbness in the hands can indicate hypocalcemia, a common complication following a thyroidectomy. Hypocalcemia requires immediate intervention to prevent severe complications like tetany and seizures. Calcium gluconate is the drug of choice for rapidly raising serum calcium levels in hypocalcemic patients. Sodium bicarbonate is not indicated for treating hypocalcemia or related symptoms. Potassium chloride is used to correct potassium imbalances, not calcium. Magnesium sulfate is not the appropriate treatment for hypocalcemia; it is commonly used for conditions like preeclampsia or eclampsia.