include the quality of recovery in each domain over the postoperative follow-up period as compared to the same in preoperative period (baseline value) using the postoperative quality of recovery scale. The different domains include physiological (with subdomains: systolic blood pressure, heart rate, temperature, respiratory rate, oxygen requirement, airway, agitation, consciousness and ability to lift head, each scoring from 1 to 3), nociceptive ( scoring 1to 5, higher score means more pain), emotional (1 to 5), activity of daily living( 1 to 3), cognitive ( with subdomains orientation(1 to 3), number forward and backward(1 to 6), word task and executive memory) and impact on ability to work(1 to 3)

factors associated with delay in recovery from anaesthesia for surgery