Laryngeal mask airway insertion with thiopentone, aided with I/V lignocaine or topical lignocaine; a comparative study

ABSTRACT

Conditions for insertion of Laryngeal Mask Airway in 40 cases were assessed. Each patient received 0.5 mg/kg pethidine intravenous and then 6 mg/kg of thiopentone preceded either by gargles of 4% lignocaine or 0.5 mg/kg I.V. lignocaine 2%. The intravenous lignocaine had better conditions for insertion of L.M.A than topical lignocaine. Dose of intravenous lignocaine was 0.5 mg/kg body weight. The haemodynamic changes, i.e. blood pressure and heart rate did not change significantly after induction