HESI Pediatrics Quizlet

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: A

Rationale: Right lower quadrant pain is a classic symptom of appendicitis. The appendix is typically located in the right lower quadrant of the abdomen, so pain in this area is commonly associated with appendicitis. Choices B, C, and D are incorrect because left lower quadrant pain, rebound tenderness, and epigastric pain are not typical manifestations of appendicitis. Left lower quadrant pain is not associated with appendicitis since the appendix is situated in the right lower quadrant. Rebound tenderness is more commonly linked with peritonitis rather than appendicitis. Epigastric pain is not a typical presentation of appendicitis as the pain is usually localized to the right lower quadrant.

Correct Answer: B

Rationale: High fever is a key clinical manifestation of bacterial meningitis due to the inflammatory response in the meninges. Photophobia, choice A, is also commonly observed due to meningeal irritation, but it is not as specific as high fever. Rash, choice C, is more indicative of conditions like meningococcal meningitis rather than bacterial meningitis. Nasal congestion, choice D, is not typically associated with bacterial meningitis. Therefore, the correct answer is B.

Correct Answer: B

Rationale: The correct answer is B. Myelination occurs in a cephalocaudal (head-to-toe) pattern, improving nerve function progressively. Choice A is incorrect as myelination continues into adolescence and beyond, not just during childhood. Choice C is incorrect because myelination actually increases the speed of nerve impulses rather than decreasing it. Choice D is incorrect as myelination enhances the specificity of nerve impulses, making them more efficient and precise rather than less specific.

Correct Answer: A

Rationale: The correct answer is to eat more food when planning to exercise more than usual. Increased physical activity requires more energy, so additional food intake is necessary to compensate for the increased energy expenditure. This helps maintain blood sugar levels within the target range. Choice B is incorrect because the mode of insulin administration does not change based on physical activity; the type and dose of insulin remain the same unless adjusted by a healthcare provider. Choice C is incorrect because insulin timing should not be adjusted solely based on anticipated exercise; consistent timing of insulin doses is crucial for stable blood sugar control. Choice D is incorrect because consuming foods with sugar may lead to unstable blood sugar levels and is not the recommended way to compensate for extra exercise, as it can result in sudden spikes and drops in blood glucose levels, affecting overall diabetes management.