Correct Answer: D

Rationale: The correct answer is D: Colicky, cramping abdominal pain around the umbilicus. This type of pain is a common early sign of acute appendicitis. Rebound tenderness, choice A, is a later sign seen in the physical examination of a patient with appendicitis. Rectal bleeding, as described in choice B, is not typically associated with appendicitis. Abdominal pain that is relieved by eating, as mentioned in choice C, is more indicative of peptic ulcer disease rather than appendicitis.

Correct Answer: C

Rationale: The correct answer is C: Give epinephrine. Administering epinephrine is the first and most critical step in treating anaphylaxis. Epinephrine rapidly reverses the symptoms of anaphylaxis, including airway swelling, hypotension, and shock. Delaying administration can lead to severe complications or death, making it essential in emergency treatment. Choice A, administering oxygen, might be necessary but should not delay the administration of epinephrine. Starting an IV line (Choice B) is important for further treatment but not the initial step. Monitoring vital signs (Choice D) is essential but comes after administering epinephrine to stabilize the child.

Correct Answer: D

Rationale: Cimetidine is an H2 blocker that reduces stomach acid, helping manage GER. Holding the infant in the prone position is not recommended due to the risk of SIDS. Breastfeeding should not be discontinued unless advised by a physician. Elevating the head to 90 degrees is excessive.

Correct Answer: D

Rationale: The correct answer is D, as gastroesophageal reflux disease (GERD) in infants typically presents with symptoms such as spitting up, failure to thrive, excessive crying, and respiratory problems due to aspiration. Bilious vomiting is not a common symptom of GERD in infants and may indicate a different or more severe condition, such as intestinal obstruction or other gastrointestinal issues. Therefore, choices A, B, and C are all expected clinical manifestations of GERD in a 6-month-old child, making option D the correct answer.

Correct Answer: D

Rationale: Postoperative care should focus on monitoring changes in stooling patterns, which could indicate complications such as stenosis or obstruction. It is crucial to educate the family on the importance of promptly reporting any changes in stooling patterns to the healthcare provider. Options A and B are not recommended unless specifically ordered by the physician as they can potentially cause harm or discomfort postoperatively. Option C may not be appropriate immediately after surgery and should be guided by the healthcare provider's recommendations.