Table 1. Changes in pH, Paco², and Pao²during Apnea after Ventilation with 100% O²

All data are expressed as mean ± SD.

†P < 0.01 compared with 0. No significant differences between groups in all variables in table.

Paco²= arterial carbon dioxide tension; Pao²= arterial oxygen tension; Apnea–100% O²= intact dogs group; apnea + vagotomy = vagotomized dogs group.