The best method of oxygen delivery suitable for an arrested child is

Correct Answer: C

Rationale: An Ambu bag provides manual positive pressure ventilation, making it the preferred method for oxygen delivery in a child with respiratory arrest.

Correct Answer: B

Rationale: Abdominal mass is the most common presentation of pediatric Non-Hodgkin lymphoma, as it often arises from extranodal sites like the GI tract. Systemic symptoms are less frequent than in Hodgkin lymphoma.

Correct Answer: A

Rationale: Second-generation H1 antihistamines are first-line for chronic urticaria due to their efficacy and fewer side effects.

Correct Answer: C

Rationale: Interfering early by calming the child may disrupt the natural resolution of the spell, which is typically brief and self-limiting.

Correct Answer: A

Rationale: Obstructive shock is due to mechanical obstructions such as cardiac tamponade or pulmonary embolism.

Correct Answer: C

Rationale: Galactosemia does not typically cause hyperinsulinemic hypoglycemia

Correct Answer: B

Rationale: Rh incompatibility does not 'never' occur in first-born infants. While it is less common, sensitization can occur during delivery or other events in the first pregnancy, leading to hemolytic disease in the first-born infant.

Correct Answer: B

Rationale: Omphalocele is a midline abdominal wall defect often associated with congenital heart defects and chromosomal abnormalities such as trisomy 13, 18, and 21. It requires surgical repair and careful monitoring.

Correct Answer: D

Rationale: School attendance is less likely to be a direct cause of somatoform disorders compared to emotional or familial issues. Emotional distress, marital conflict, and abuse are more directly linked to psychological stressors.