RT Journal Article SR Electronic T1 Comparison of flow and volume incentive spirometry on pulmonary function and exercise tolerance in open abdominal surgery – A randomized clinical trial JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP PA4429 DO 10.1183/13993003.congress-2016.PA4429 VO 48 IS suppl 60 A1 Kumar, Sampath YR 2016 UL http://erj.ersjournals.com/content/48/suppl_60/PA4429.abstract AB Background: Surgical procedures in abdominal area lead to changes in pulmonary function leading to postoperative pulmonary complications.Aims: To evaluate the effects of flow and volume incentive spirometry on pulmonary function and exercise tolerance in patients undergoing open abdominal surgery.Methods: A trial was conducted in a hospital of Mangalore city in Southern India. 37 males and13 females were included and allocated into flow and volume incentive spirometry groups by block randomization. All subjects underwent evaluations of pulmonary function. Exercise tolerance measured by Six Minute Walk Test. Pulmonary function was analyzed by post hoc analysis and carried out using Bonferroni's t test. Exercise tolerance was analyzed by Paired 'T'-test.Results: Pulmonary function was found to be significantly decreased in 1st, 2nd and 3rd postoperative day when compared with preoperative day. On 4th and 5th postoperative day the pulmonary function was found to be better preserved in both flow and volume incentive spirometry groups. The six minute walk test showed a statistically significant improvement in pulmonary function on the day of discharge than in the pre-operative period. In terms of distance covered, the volume- incentive spirometry group showed a greater statistically significant improvement from the pre-operative period to the time of discharge than was exhibited by the flow incentive spirometry group.Conclusion: incentive spirometry can be safely recommended to patients undergoing open abdominal surgery as these led to a demonstrable improvement in pulmonary function and exercise tolerance.