Cysatracurium dosing in gynecological laparoscopic surgery in obese patients

Abstract

Aim. Substantiation of cisatracurium dosing in routine gynaecological laparoscopic surgery in obese patients based on comparative development time and duration of the neuromuscular block.Materials and methods. The assay included 24 women with class II-III obesity and routine laparoscopic gynaecological surgery divided into two cohorts. In cohort 1, cisatracurium was dosed at 0.15 mg/kg ideal body weight estimated with the Lorentz formula. In cohort 2, cisatracurium dosing was 0.15 mg/kg real body weight.Results. Tracheal intubation and total operation doses of the relaxant were higher when rated for real body weight. Time between cysatracurium administration and maximal neuromuscular transmission inhibition was less in cohort 2, and recovery time of the first response to stimulation — in cohort 1. Neuromuscular block recovery time to 25% TOF count and the recovery index did not differ significantly between the cohorts.Conclusion. Cysatracurium dosage rated for ideal body weight resulted in a better controlled course of the neuromuscular block, whilst rating for real body weight resulted in a dose-dependent increase of the duration of action and total consumption rate of the relaxant.

Keywords

• cisatracurium
• neuromuscular block
• obesity
• anaesthesia