A Full-Term Neonate Shows Signs of Respiratory Distress After Delivery

A full-term neonate shows signs of respiratory distress after delivery by cesarean section.The baby is placed on nasal CPAP at 4 cm H₂O with an F_IO₂ of 0.6.The ABG results on these settings are: pH = 7.32,PaCO₂ = 45 mm Hg,PaO₂ = 48 mm Hg,SaO₂ = 70%,HCO₃^- = 22 mEq/L.The respiratory therapist should recommend which of the following?

A) Switch to NIPPV.
B) Increase the F_IO₂ to 0.7.
C) Increase the CPAP to 6 cm H₂O.
D) Intubate and use ventilator CPAP.