RESUMO
Objective: To see the effect of pre-operative incentive spirometry on postoperative atelectasis in patients undergoing Coronary Artery Bypass Grafting
Methodology: This was a randomized prospective study. The duration of study was 05 months from 01-02-2015 to 31-06-2015. A total number of 170 patients were included in this study. In Group I, there were patients in whom incentive spirometry was done before surgery [Study group]. While in Group II patients pre-operative spirometry was not done [Control group]. There were 85 patients in each group. Data was analyzed using SPSS Version 19. Chi-square test and independent sample t-test were used for analysis of qualitative and quantitative variable respectively. P-value < 0.05 was taken as a significant difference
Results: There were 42.4% patients who have positive smoking history in group I as compared to only 24.7% smoker patients in group II [p-value 0.02]. Ventilation time was significantly less in group I patients, it was 5.49 +/- 2.28 hours versus 6.74 +/- 5.46 hours in group II patients [p-value 0.05]. Incidence of post-operative atelectasis was 14.10% in group I and 27.10% in group II patients [p-value 0.04]. So we found that pre-operative incentive spirometry results in considerable reduction in incidence of post-operative atelectasis and it also can reduce ventilation time as well
Conclusion: Pre-operative incentive spirometry helps to reduce and prevent post-operative atelectasis in patients undergoing coronary artery bypass grafting