Correct Answer: C

Rationale: The correct answer is C: Serum calcium. Numbness and tingling can be indicative of hypocalcemia, which can affect the nervous system. Reviewing serum calcium levels is crucial to address this potential issue. Options A, B, and D are not directly related to the symptoms described by the client and are not typically associated with numbness and tingling around the mouth and fingers. Capillary glucose levels are more relevant in assessing for diabetes or monitoring glucose control. Urine specific gravity is useful in evaluating hydration status. White blood cell count is typically checked to assess infection or immune response, which are not indicated by the client's symptoms of numbness and tingling.

Correct Answer: D

Rationale: In this situation, the priority action for the nurse is to change the client's position. Altering the client's position can help facilitate better fluid drainage in peritoneal dialysis, potentially resolving the issue without the need for more invasive interventions. Continuing to monitor intake and output (Choice A) is important but addressing the immediate drainage issue takes precedence. Checking blood pressure and serum bicarbonate levels (Choice B) is not directly related to the observed output flow discrepancy. Irrigating the dialysis catheter (Choice C) should not be the initial action as it is more invasive and should be considered only if repositioning does not resolve the issue.

Correct Answer: B

Rationale: The priority intervention for the nurse is to assess the client's neurological status q15 min. This is crucial to monitor for potential side effects of lidocaine, especially its neurotoxic effects. While measuring the client's cardiac output and collecting a blood specimen for serum potassium are important assessments, assessing the neurological status is the priority when administering lidocaine. Infusing lidocaine at a specific rate should follow the initial assessment of the client's neurological status to ensure safety.

Correct Answer: A

Rationale: Changes in mental status are crucial to monitor in a client with severe dehydration. Altered mental status, such as confusion or lethargy, can indicate severe dehydration and potential complications like electrolyte imbalances affecting the brain. Monitoring urine output and color (choice B) is essential but may not provide immediate signs of severe dehydration. While monitoring blood pressure and heart rate (choice C) is important, changes in mental status take precedence as they can indicate more critical conditions. Skin turgor (choice D) is a valuable assessment for dehydration, but changes in mental status take priority due to their direct correlation with severe dehydration.

Correct Answer: A

Rationale: To calculate the total dose of baclofen needed in a 24-hour period, multiply 15 mg by 3 doses, which equals 45 mg. Since the tablets are available in 10 mg strength, divide the total dose needed (45 mg) by the strength of each tablet (10 mg), which equals 4.5 tablets. Rounding off to the nearest tenth, the nurse should administer 4.5 tablets of 10 mg baclofen per day. Therefore, choice A is correct. Choices B, C, and D are irrelevant as they are not provided.