Figure 1. Consciousness State in the Three Groups.

1- Awake, 2- Sometimes wake up and then sleep, 3- Almost always sleeps, 4- Hardly wakes up. The P values, after extubation, at 2, 4, 6, 12, 18 and 24 hours were 0.6, 0.95, 0.28, 0.005, 0.027, 0.022 and 0.004, respectively.