This clinical study investigates the effects of lidocaine aerosol as an adjunct to low-dose cisatracurium for endotracheal intubation during ERCP (Endoscopic Retrograde Cholangiopancreatography) procedures. The aim is to assess whether lidocaine aerosol can improve the clinical conditions of intubation to a level comparable to the standard dose of cisatracurium, while reducing the amount of muscle relaxant required. The study also seeks to evaluate the impact of this approach on intubation success, extubation time, and recovery time in the operating room, ultimately improving the efficiency of the operating room. Participants will be randomly assigned to either the low-dose cisatracurium group with lidocaine aerosol or the standard-dose cisatracurium group. The primary outcome is the incidence of clinically acceptable intubation conditions, defined by the Cooper's grading system.
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Clinically acceptable intubation conditions (Cooper score ≥6)
Timeframe: At the intubation attempt following induction (~3 minutes after induction)