Correct Answer: D

Rationale: A positive Chvostek's sign indicates hypocalcemia, a complication after parathyroid surgery that requires immediate attention. This sign is manifested by facial muscle twitching when the facial nerve in front of the ear is tapped, indicating neuromuscular irritability due to low calcium levels. Afebrile with a normal pulse (Choice A) is a normal finding and does not require immediate notification. No bowel movement since surgery (Choice B) is common postoperatively due to anesthesia effects and pain medications and usually resolves within a few days; it does not require immediate notification unless accompanied by other concerning symptoms. No appetite for breakfast (Choice C) is a common postoperative finding and does not require immediate notification unless it persists and leads to dehydration or malnutrition.

Correct Answer: D

Rationale: The correct answer is D, Serum immunoglobulin E (IgE) testing. This test can help diagnose food allergies, including milk protein allergies, in toddlers presenting with symptoms like skin rashes, hives, abdominal pain, and vomiting after consuming milk products. Skin allergy testing is used for allergies but may not be suitable for this age group due to developmental factors. Lactose intolerance, which is different from a milk allergy, is assessed through a lactose tolerance test, not IgE testing. A complete blood count (CBC) would not provide specific information related to food allergies.

Correct Answer: B

Rationale: The immediate priority for a client with a suspected infection and fever is to take a blood culture before administering antibiotics. This step is crucial to identify the causative organism and ensure appropriate treatment. Administering antipyretics or encouraging fluid intake are important but should come after obtaining the blood culture to avoid interfering with test results. Monitoring vital signs, although essential, is not the immediate priority compared to identifying the infectious agent.

Correct Answer: B

Rationale: The correct answer is B. Using nitroglycerin as needed, every 5 minutes, up to 3 doses, is the appropriate management for angina at rest. This helps dilate blood vessels, improving blood flow to the heart. Choice A is incorrect because chest pain that persists at rest should be addressed immediately, not waiting for 30 minutes. Choice C is incorrect as avoiding physical activity is not a recommended approach during an angina episode. Choice D is incorrect because nitroglycerin should be used during chest pain episodes, not as a preventive measure before physical activity.

Correct Answer: B

Rationale: The correct answer is to assess for signs of bleeding. Warfarin is an anticoagulant that increases the risk of bleeding in patients. Monitoring for signs of bleeding such as easy bruising, petechiae, blood in urine or stool, or unusual bleeding from gums is crucial. Checking the client's blood pressure (choice A) is important but not the priority in this situation. Assessing the client's neurological status (choice C) is essential in stroke patients but is not the priority related to warfarin therapy. Monitoring intake and output (choice D) is important for overall assessment but is not the priority when a client is on warfarin, as assessing for bleeding takes precedence.