Comparative study of recovery characteristics between sevoflurane and desflurane in laparoscopic cholecystectomy patients under general anaesthesia in Regional Institute of Medical Sciences Hospital- a randomized clinical trial.

Sevoflurane and desflurane are the newer inhalational volatile anaesthetics with properties close to ideal and have been an important agent used in the maintenance of anesthesia. Some previous studies have highlighted that desflurane provided rapid and stable emergence than sevoflurane in many surgical day care procedures. Desflurane however has been not used in induction due to its propensity to cause airway irritation, cough, larngospasm and profuse secretion in some studies.  Laparoscopic cholecystectomy surgery is usually a minimal invasive one which offers reduced morbidities, lesser operative time and early return to normal activities.

The present study will be conducted to compare the recovery characteristics of sevoflurane and desflurane in laparoscopic cholecystectomy under general anaesthesia and will compare the time interval from the stoppage of inhalational anaesthetics to the time to spontaneous eye opening, time to obey commands, time to extubation and time to reach  modified Aldrete score of 9. The study has been planned as there is paucity of literatures comparing these two agents on laparoscopic cholecystectomy which is the most common operative procedure in the Institute and it has also not been undertaken in this part of our ethinicity

A total of 60 patients, aged 18 to 55 years belonging to American society of Anaesthesiologists (ASA) I and II, undergoing laparoscopic cholecystectomy under general anaesthesia will be divided into two groups (Group A and Group B) by block randomization. Group A patients will receive Sevoflurane as maintenance agent with concentration decided by Bispectral Index Score (BIS) and hemodynamics parameters whlie Group B patients will receive Desflurane as maintenance agent with concentration decided by Bispectral Index Score (BIS) and hemodynamics parameters.The time interval from the stoppage of inhalational anaesthetics to the time to spontaneous eye opening, time to obey commands, time to extubation and time to reach  modified Aldrete score of 9 will be recorded in minutes.The hemodynamics parameters such as blood pressure and heart rate at 5 minutes, 10th minutesthereafter for every 10 minutes and at immediate postoperative period, side effects such as coughing, emergence agitation, nausea and vomiting, laryngospasm, excessive secretion, desaturation, etc will also be assessed.

The findings and observations made during the entire study will be tabulated, graphically depicted whenever possible, statistically analysed and inference will be drawn. The study will be conducted after getting due approval from the Research Ethics Board of the Institute and after registration with the Clinical Trial Registry of India.