Table 2. Control of End-tidal Oxygen and Carbon Dioxide Partial Pressures, Oxygen Saturation, and Bispectral Index Values during the Hypoxic Pulses Test

Values are mean ± SD.

A = the last minute of normoxia before the first hypoxic pulse; B = the third minute of the first hypoxic pulse; C = the third minute of the sixth hypoxic pulse; BIS = bispectral index; PET^CO2= end-tidal carbon dioxide partial pressure; PET^O2= end-tidal oxygen partial pressure; Sp^O2= oxygen saturation as measured by pulse oximetry.

*P < 0.05 vs.  period A.