An infant has been intubated and mechanically ventilated for 6 days due to respiratory failure during the acute phase of RSV infection. Which of the following most strongly indicates that the infant is ready for extubation?
a. Reason for intubation is resolved
b. Patient awakens during physical exam and moves head back and forth.
c. Ability to manage oral secretions
d. FiO₂ weaned to 0.35