Correct Answer: A

Rationale: Right lower quadrant pain is a characteristic clinical manifestation of appendicitis. The appendix is typically located in the right lower quadrant of the abdomen, so pain in this area is a common symptom. Left lower quadrant pain (Choice B) is less likely in cases of appendicitis. Rebound tenderness (Choice C) is a sign of peritonitis, not specific to appendicitis. Epigastric pain (Choice D) is more indicative of upper gastrointestinal issues rather than appendicitis.

Correct Answer: B

Rationale: The correct answer is B: systolic blood pressure. In young children, systolic blood pressure is the least reliable parameter for assessing perfusion status. Factors such as anxiety, crying, and fear can significantly affect blood pressure measurements, leading to inaccuracies. Distal capillary refill, skin color and temperature, and presence of peripheral pulses are more reliable indicators of perfusion status in pediatric patients. Distal capillary refill assesses peripheral perfusion, skin color, and temperature reflect tissue perfusion, and the presence of peripheral pulses indicates blood flow to the extremities. Therefore, when evaluating a 2-year-old child with possible shock, focusing on parameters other than systolic blood pressure is crucial for an accurate assessment of perfusion status.

Correct Answer: C

Rationale: The correct answer is C. Longer periods of sleep than usual can be a sign of illness in infants. When an infant sleeps more than usual, it can indicate that the baby is conserving energy due to an underlying condition. Grunting respirations (choice A) can be a sign of respiratory distress, not just an indication of illness. Excessive perspiration (choice B) can occur due to various reasons and is not a specific major indication of illness. Crying immediately after feedings (choice D) is a common behavior in infants and not necessarily a major indication of illness.

Correct Answer: A

Rationale: Infection is the most common cause of shock in infants and children due to their increased susceptibility to sepsis. Infants and children have underdeveloped immune systems, making them more prone to infections that can lead to septic shock. While cardiac failure is a serious condition, it is not the most common cause of shock in this population. Accidental poisoning, though dangerous, is less common than infection in causing shock in infants and children. Severe allergic reactions can lead to anaphylactic shock, but they are not as prevalent as infections in causing shock in this age group.

Correct Answer: B

Rationale: Correct Answer: B. Placing the infant in an infant seat is essential after feeding to help keep the head elevated and reduce the risk of vomiting. This position helps prevent regurgitation of formula or milk. Rocking the infant (Choice A) is incorrect because it may exacerbate vomiting due to the movement. Placing the infant flat on the right side (Choice C) is incorrect as it does not promote proper digestion and can increase the risk of vomiting. Keeping the infant awake with sensory stimulation (Choice D) is incorrect as it does not directly address the physiological need to reduce vomiting after feeding.