A 30-week neonate with respiratory distress has received bub…

A 30-week neonate with respiratory distress has received bubble CPAP at 5 cm H2O and FIO2 0.35 for two hours. The infant now has repeated apnea with bradycardia, marked retractions, and an irregular respiratory pattern. The arterial blood gas is pH 7.22, PaCO2 64 mm Hg, PaO2 52 mm Hg, and HCO3 26 mEq/L.   Identify two findings that make continued CPAP alone inappropriate What type of respiratory support should the team prepare next? Explain why.