Fig. 4From: The effects of the administration sequence and the type of hypnotics on the development of remifentanil-induced chest wall rigidity: a randomized controlled trialThe changes in heart rates among the four groups. DI; drug infusion, LOC; loss of consciousness, ET; endotracheal. *Compared with that at baseline, the heart rate was significantly lower at LOC (P < 0.001) in the Pro-Remi group. †The heart rate was also significantly lower at LOC (P = 0.001) than at baseline in the Remi-Pro groupBack to article page