The patient with severe abdominal pain and distention, elevated white blood cell count, fever, and disorientation is diagnosed with toxic megacolon due to Clostridium difficile infection. Which order for this patient does the nurse question?

An infant of 32 weeks gestation is born precipitously and is noted to be pale and limp. Resuscitative actions are initiated. At one minute of life, the infant has a pinkish central body, bluish hands and feet, a heart rate of 135 bpm, grimaces with painful stimuli, remains limp, and exhibits gasping respiration. Assign an Apgar score to this neonate using a whole number.

Which arterial blood gas result is most indicative that the intubated and mechanically ventilated patient is ready to have the ventilator rate weaned?