Effect of Perioperative Intravenous Lignocaine Infusion on Haemodynamic Responses and postoperative Analgesia in Laparoscopic Cholecystectomy Surgeries.

BACKGROUND

During general anaesthesia, intubation of trachea and extubation of trachea are often associated with increase in haemodynamic response. Laparoscopic cholecystectomy is a minimal access surgery; postoperatively patients may experience moderate to severe pain. It is well known that lignocaine is useful in attenuating haemodynamic response to intubation and extubation. Previous studies also state that perioperative lignocaine infusion provides postoperative analgesia as well. We hypothesize that perioperative intravenous lignocaine infusion can both attenuate haemodynamic responses to intubation and extubation of trachea and also provide good postoperative analgesia in laparoscopic cholecystectomy surgeries.

METHODS

Double blinded randomized controlled trial was undertaken at the department of anesthesia, Sri Siddartha medical college. In group A, 0.9% normal saline was used as placebo for perioperative intravenous infusion. In group B, preservative free 1.5 mg/kg 2 % lignocaine (Loxicard) diluted with normal saline to 1% given at 10 minutes to induction as bolus, followed by an infusion of 1.5 mg/kg/h. till 1 hour postoperatively.

RESULTS

In Group B there was a statistically less rise in heart rate [HR] and mean blood pressure [MBP] during intubation and extubation of trachea compared to group A. In group B there was a statistically significant increase in the mean pain free period postoperatively compared to group A.

CONCLUSIONS

Perioperative intravenous infusion of lignocaine attenuates haemodynamic response during the intubation and extubation of the trachea. In addition, it also increases the mean pain free period postoperatively.