[Pharmacokinetics of a cisatracurium dose according to fat-free mass for anesthesia induction in morbidly obese patients].

Objective: To compare the pharmacokinetics of cisatracurium between normal weight patients and morbidly obese patients.

Methods: Twelve obese ASA I-II patients (BMI≥35 kg/m) undergoing laparoscopic Roux-en-Y gastric bypass and 12 normal weight ASA I-II patients (BMI of 18.5-24 kg/m) undergoing laparoscopic surgery were enrolled.