RESULTS: Out of 118 patients, 65 were responders (change in SV over 15%) and 53 were non-responders. Among the responders, changes in variables like SVI (ml/m2), Systolic ABP (mmHg), Diastolic ABPand Mean ABP were significant (33.4±8.2,40.6±11.4, P=0.007:100.2±16.5 vs 116.6±21.7, P=0.02,:54.5±10.4 vs 66.3±10.7, P=0.005:67.5±11.7 vs 79.9±12.8, P=0.008). Notably the CVP mean, among the responders was statistically significant (6.8±2.8 vs 12.8±3.6, P=0.001). Post PLR, the AUC and the ROC curve of change in SVI and change in CVPmean for predicting the responsiveness after VE were 0.881±0.065 (95% CI 0.759-1.000) and 0.801±0.077 (95%CI 0.650-0.969) respectively. The change in SVI of 8.8% predicted fluid responsivenss with a sensitivity of 72.7% and specificity of 80%; whereas the change in CVP mean of 12.7% predicted fluid responsivess had the same sensitivity and specificity.