Which of the following is an accurate statement about capnography
A. Capnography can detect respiratory depression more quickly than pulse oximetry can
B. Capnography is a less accurate indicator of ventilation than pulse oximetry is
C. Capnography is a more accurate indicator of heart rate than pulse oximetry is
D. Capnography is entirely optional as a monitor for patients under moderate sedation
E. Capnography is only needed if no supplemental oxygen is given