Nokea
Which of the following is the best indicator of a child's nutritional status?
- A. Weight
- B. Height
- C. Head circumference
- D. Mid-upper arm circumference
Correct Answer: D
Rationale: Mid-upper arm circumference is a good indicator of muscle mass and fat stores, reflecting a child's nutritional status. It is particularly useful in assessing malnutrition, as it is less affected by fluid retention or dehydration compared to other anthropometric measurements. Weight can fluctuate due to factors like hydration status, making it less reliable as a sole indicator of nutritional status. Height reflects growth but may not directly indicate current nutritional status. Head circumference is more related to brain growth and development rather than overall nutritional status.
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What is the first step in treating a child with suspected anaphylaxis?
- A. Administer oxygen
- B. Start an IV line
- C. Give epinephrine
- D. Monitor vital signs
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.
What is a classic sign of congenital hypothyroidism in newborns?
- A. Jaundice
- B. Hypothermia
- C. Prolonged jaundice
- D. Excessive crying
Correct Answer: C
Rationale: Prolonged jaundice is a classic sign of congenital hypothyroidism in newborns. In congenital hypothyroidism, the thyroid gland does not produce enough thyroid hormones, leading to symptoms like jaundice, poor feeding, constipation, and lethargy. While jaundice itself is a common condition in newborns, the term 'prolonged jaundice' specifically points towards the underlying thyroid issue. Hypothermia and excessive crying are not typically associated with congenital hypothyroidism.
Which pediatric condition is characterized by a "string sign" on an upper GI series?
- A. Intussusception
- B. Hypertrophic pyloric stenosis
- C. Hirschsprung disease
- D. Meckel diverticulum
Correct Answer: B
Rationale: The correct answer is B: Hypertrophic pyloric stenosis. The "string sign" is associated with hypertrophic pyloric stenosis, a condition where the pyloric canal is narrowed, leading to gastric outlet obstruction. Intussusception (choice A) typically presents with colicky abdominal pain and currant jelly stools. Hirschsprung disease (choice C) is characterized by the absence of ganglion cells in the distal colon. Meckel diverticulum (choice D) is a congenital outpouching of the small intestine that can present with painless rectal bleeding.
What is the first step in managing a child with anaphylaxis?
- A. Administer antihistamines
- B. Establish IV access
- C. Administer epinephrine
- D. Monitor vital signs
Correct Answer: C
Rationale: The correct answer is to administer epinephrine. Administering epinephrine is the crucial first step in managing anaphylaxis as it helps reverse the severe allergic reaction by constricting blood vessels and relaxing airway muscles, preventing a life-threatening situation. Antihistamines (Choice A) are not the first-line treatment for anaphylaxis and should not delay the administration of epinephrine. Establishing IV access (Choice B) may be necessary but is not the initial step in managing anaphylaxis. Monitoring vital signs (Choice D) is important but should not take precedence over administering epinephrine in the acute management of anaphylaxis.
One of the major differences in clinical presentation between Crohn disease (CD) and ulcerative colitis (UC) is that UC is more likely to cause which clinical manifestation?
- A. Pain
- B. Rectal bleeding
- C. Perianal lesions
- D. Growth retardation
Correct Answer: B
Rationale: Rectal bleeding is more commonly associated with ulcerative colitis (UC) than with Crohn disease (CD). While both conditions can cause abdominal pain and growth issues, bleeding is a hallmark of UC due to its superficial mucosal inflammation. Perianal lesions are more characteristic of CD, and growth retardation is typically not a direct clinical manifestation of either CD or UC.