The effect of increasing the dose of succinylcholine on the motor response during the tracheal intubation in cesarian section

Background and Rapid sequence induction is a method of choice for cesarian section. Ïn this method 1-1.5 mg/kg succinylcholine is advised to produce relaxation for tracheal intubation. Ïn this study, we used succinylcholine in dosage of 1.5-2 and 2.5 mg/kg and the motor response during intubation was observed. This sequentional study involved 100 patients randomly allocated into 3 groups. Ânesthesia was induced similarly in all groups. Âfter loss of consciousness, patients were randomly selected to receive 1.5 mg/kg (control group), 2 and 2.5 mg/kg succinylcholine. Tracheal intubation was performed 60 s later. Ân anesthesiolgist who was unaware of these groups investigated and recorded the motor responce during intubation. Most patients did not produce any motor response (at least 80%). Çhi square test showed that the motor response of different groups during intubation were not significant. Çonclusion: We concluded that increasing the dose of succinylcholine does not decrease the motor response during tracheal intubation. This might be related to other factors such as dose of hypnotics or time of injection of drugs and etc.