Study Comparing the Use of Remifentanil Versus Propofol for Performing Bronchial Fibroscopy

1: Remifentanil group The infusion of Remifentanil by TCI begins at distance from the introduction of fiberoptic. The effect site target is 4 ng / ml.- A titration in increments or decrements (respectively increase or decrease of 1 ng / ml effect site concentration) separated by 1 minute intervals until an OAAS score of 4 and respiratory frequency range between 10 and 20 cycles per minute.

2: Propofol group- The infusion of Propofol by TCI begins at distance from the introduction of fiberoptic. The effect site target is 2,5 ng / ml.- A titration in increments or decrements (respectively increase or decrease of 0.5 mg / ml concentration effect site) separated by 1 minute intervals until an OAAS score of 4 and included respiratory rate between 10 and 20 cycles per minute.