Clinical presentations of chronic heart failure in infancy may include all the following Except:

Correct Answer: C

Rationale: Acute weight gain is not a common sign in chronic heart failure in infancy; rather, poor weight gain and growth failure due to increased metabolic demand are more typical.

Correct Answer: D

Rationale: Tricuspid atresia leads to severe cyanosis due to lack of right atrioventricular connection, necessitating a right-to-left shunt for survival. It presents early with cyanosis and hypoxia requiring urgent intervention.

Correct Answer: B

Rationale: Hyperinsulinism is a common cause of persistent neonatal hypoglycemia due to excessive insulin production. It requires medical management with dextrose infusions or medications like diazoxide to prevent neurodevelopmental impairment.

Correct Answer: D

Rationale: Gestational age and birth weight are the most critical risk factors for NEC, with lower gestational age and lower birth weight significantly increasing the risk.

Correct Answer: C

Rationale: Distributive shock is caused by vasodilation and fluid maldistribution, as seen in early septic shock, unlike cardiac or hypovolemic causes.