• J. Int. Med. Res. · Jan 2012

    Evaluation of stroke volume variation obtained by the FloTrac™/Vigileo™ system to guide preoperative fluid therapy in patients undergoing brain surgery.

    • J Li, F H Ji, and J P Yang.
    • Department of Anaesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.
    • J. Int. Med. Res. 2012 Jan 1;40(3):1175-81.

    ObjectiveThe accuracy of stroke volume variation (SVV) obtained by the FloTrac™/Vigileo™ system in otherwise healthy patients undergoing brain surgery was assessed.MethodsAnaesthesia was induced in 48 patients with minimal fluid infusion. Before surgery, fluid volume loading was performed by infusion with Ringer's lactate solution in 200 ml steps over 3 min, repeated successively if the patient responded with an increase in stroke volume of ≥ 10%, until the increase was < 10% (nonresponsive).ResultsA total of 157 volume loading steps were performed in the 48 patients. Responsive and nonresponsive steps differed significantly in baseline values of blood pressure, heart rate and SVV. Significant correlations were found between the change in stroke volume after fluid loading and values of blood pressure, heart rate and SVV before fluid loading, with SVV the most sensitive variable.ConclusionStroke volume variation obtained using the FloTrac™/Vigileo™ system is a sensitive predictor of fluid responsiveness in healthy patients before brain surgery.

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