Abstract：Objective To evaluate the abilities and thresholds of stroke volume variation (SVV) and pulse pressure variation (PPV) in predicting fluid responsiveness during robot-assisted hepatic surgery. Methods 26 patients, undergoing robot-assisted hepatic surgery were studied. All patients were also monitored with Vigileo/FloTrac system. Haemodynamic data such as MAP, HR, SVI, SVV, PPV were recorded before and after volume expansion(HES 6%, 7 ml/kg). Fluid responsiveness was defined as an increase in SVI≥15%(△SVI≥15%). Results The SVV threshold of 13.5% before volume expansion was able to discriminate the responders from the non-responders with a sensitivity of 66.7%, and a specificity of 85.7%. The threshold for PPV was 14.5%, the sensitivity of 75% and specificity of 100% were obtained. There was no significant difference between the area under the receiver operating characteristics (ROC) curves of SVV and PPV (0.839, 0.875), and there was a significant correlation between the baseline SVV and the baseline PPV (r=0.772 , P<0.01).Conclusions SVV and PPV can predict fluid responsiveness accuratly during robot-assisted hepatic surgery, the baseline SVV is correlated well with baseline PPV, and the ability of SVV and PPV in predicting fluid responsiveness is similiar.
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2015, Vol. 26 
