Cryogenic liquids have a boiling point of ___°F (°C)

You obtain an SpO2 reading of 90% using an oximeter with an approximate accuracy of 5%. This could indicate a PO2 as low as what level?

a. 55 mm Hg b. 60 mm Hg c. 65 mm Hg d. 70 mm Hg

During capnography monitoring of a mechanically ventilated patient, you note that the PETCO2 has dropped to 0 mm Hg. Which of the following is the most likely problem?

a. Ventilator disconnection b. Tracheal intubation c. Increased cardiac output d. Hypoventilation