Methodology.

Patient will undergo routine evaluation by the PAC consultant for fitness for anaesthesia. The functional capacity assessment of the recruited will be done by the concerned anesthesiologist in PAC based on various criteria- patient history, METs score, breath holding test. After the clinical examination by the PAC consultant, the METs score 10 assigned by the PAC consultant will be documented and categorized into METs <4, 4-7, >7 indicating poor, normal and good functional capacity.

After the admission of the patient for the proposed elective surgery, the patient will be given a time slot and asked to report to department of anesthesiology preferably without heavy meals. The anesthesiologist blinded to the Functional capacity score assessed in PAC will conduct the 6 MWT. 6 MWT - a measured corridor course will used for walking with subjects instructed to walk from one end to other at their own pace attempting to cover as much distance as possible in the allotted 6 min. Location - a long, flat, straight, enclosed 30 m (100 feet) college corridor marked by cones will be used. The length of the corridor will be marked every 3 m by a color tape. The subject was rested for about 10 min in a chair, located near the starting position, before the test. During this time anthropometric parameters of the subject and the blood pressure were taken. An activity tracker with a pedometer app will be applied on the patient’s wrist. As soon as the subject starts to walk, the timer will be set. Number of laps will be counted each time the subject returns to the starting point. Additional distance covered will also be recorded. The total distance walked, the post-test HR, BP, SPO2 and fatigue index by BORG scale will be recorded