The MOST common form of nonallergic rhinitis in children is

Correct Answer: D

Rationale: Infectious rhinitis is the most common cause of nonallergic rhinitis in children.

Correct Answer: B

Rationale: A low Factor VII level is a poor prognostic sign in fulminant hepatitis, indicating severe hepatic dysfunction and impaired coagulation.

Correct Answer: C

Rationale: The Heimlich maneuver involves abdominal (epigastric) thrusts to expel an obstructing object from the airway by creating an artificial cough.

Correct Answer: D

Rationale: Irritability is an early sign of hypoxia in infants, as oxygen deprivation initially affects neurological function before progressing to more severe signs like cyanosis.

Correct Answer: A

Rationale: Tuberous sclerosis is a genetic disorder, not a metabolic disorder like the other options.