Interpret the following ABG results (pH: 7.48 - PaCO2: 42 - HCO3:30):

Correct Answer: D

Rationale: A pH of 7.48 indicates alkalosis, and since HCO3 is elevated, it suggests metabolic alkalosis without respiratory compensation.

Correct Answer: B

Rationale: Intubation is indicated in neonates when there is inadequate oxygenation despite supplemental oxygen, as it may be necessary to provide more effective ventilation and support for gas exchange.

Correct Answer: D

Rationale: Maintenance fluid calculation follows the Holliday-Segar formula: 100 mL/kg for first 10 kg, 50 mL/kg for next 10 kg, and 20 mL/kg for additional weight. For a 25 kg child: 1600 mL/day.

Correct Answer: A

Rationale: The appropriate endotracheal tube size for a child over 1 year can be estimated using the formula: (Age/4) + 4. For a 4-year-old, this is 5.0 mm.

Correct Answer: C

Rationale: Congenital pneumonia with sepsis is likely given the low WBC count, prematurity, and need for ventilation