Which is the following cases presents the best example of the hypoxic drive theory:
- a. COPD retainer on 100% FiO2 for six hours in the ER to maintain an SpO2 of 90%. The patient is AAOX3 and denies shortness of breath.
- b. COPD retainer on 2lpm to maintain an SpO2 of 86%. The patient is cyanotic and complains of dyspnea.
- c. The patient is on 35% air entrainment mask to maintain an SpO2 of 86. The CO2 rose from 56-62 after the mask was placed on the patient. The doctor instructs the RT to decrease the FiO2 on the mask to 30%
- d. All of the above
- e. Both b and c