3.2 Lung ultrasound scores (LUS) (Figure 3)
In both the groups the LUS score increased from baseline to PSV and but continued to be increased into post-extubation period in group 1(score 1 vs 2; p-value 0.024); whereas they decreased in-group 2 in the post-extubation period (score 1 vs 1). There was no significant difference between the LUS scores between the two groups at the three time points. Similarly , the total number of B-lines increased from baseline to PSV in both the groups , but after extubation decreased significantly in group-2 (B lines 12 vs 9), but continued to increase in group-1(B lines 9 vs 19).