Assessment of Effect of Low Dose Succinylcholine on Facilitating Insertion of Laryngeal Mask Airway- Single-blind Randomised Study

摘要

Laryngeal Mask Airway (LMA) insertion is often associated with complications such as gagging, laryngospasm and mobility of the head and neck while insertion. To overcome this and achieve a smooth insertion, many drugs are tried one of them is being succinylcholine.Aim: To assess the effects of low dose succinylcholine (0.1 mg/kg) on facilitation of LMA insertion to achieve adequate conditions with fewer or no side effects.Materials and Methods: Sixty patients of American Society of Anesthesiologists (ASA) I and II grade were posted for elective surgeries under general anaesthesia with LMA. Patients were randomly allocated into two groups of 30 each. Control group (Group C) received a bolus dose of 2 mL of 0.9% sodium chloride I.V post induction. Study Group (Group S) received a bolus of succinylcholine 0.1 mg/kg diluted in 2 mL of 0.9% sodium chloride I.V post induction. Following activities like jaw relaxation, coughing/gagging, head and limb movements, presence or absence of laryngospasm and duration of apnea were noted and were compared using chi-square test, while performing LMA insertion under general anaesthesia.Results: It was found that the number of incidences of gagging (mild) and coughing (mild) in Group S was 3.33% and 0%, respectively, while it was 23.33% and 26.66% in Group C. It was found that group S had excellent insertion conditions in 94% of patients as compared to 36% of group C (p<0.001). In 93.33% of patients, LMA was inserted in 1~(st) attempt in group S, whereas 40% of patients in group C required more than one insertion attempt and also 93.3% of patients in group S did not require excess propofol, whereas supplement doses of propofol in control group was required in 60% of patients.Conclusion: Low dose succinylcholine provides better LMA insertion conditions with reduced number of attempts, incidences of gagging and coughing.