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J Clin Monit Comput · Apr 2017
Observational StudyUtility of stroke volume variation measured using non-invasive bioreactance as a predictor of fluid responsiveness in the prone position.
- Jeong Jin Min, Jong-Hwan Lee, Kwan Young Hong, and Soo Joo Choi.
- Department of Anaesthesiology and Pain Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea.
- J Clin Monit Comput. 2017 Apr 1; 31 (2): 397-405.
AbstractThe aim of this prospective study was to evaluate the usefulness of stroke volume variation (SVV) derived from NICOM® to predict fluid responsiveness in the prone position. Forty adult patients undergoing spinal surgery in the prone position were included in this study. We measured SVV from NICOM® (SVVNICOM) and FloTrac™/Vigileo™ systems (SVVVigileo), and pulse pressure variation (PPV) using automatic (PPVauto) and manual (PPVmanual) calculations at four time points including supine and prone positions, and before and after fluid loading of 6 ml kg-1 colloid solution. Fluid responsiveness was defined as an increase in the cardiac index from Vigileo™ of ≥12 %. There were 19 responders and 21 non-responders. Prone positioning induced a significant decrease in SVVNICOM, SVVVigileo, PPVauto, and PPVmanual. However, all of these parameters successfully predicted fluid responsiveness in the prone position with area under the receiver-operator characteristic curves for SVVNICOM, SVVVigileo, PPVauto, and PPVmanual of 0.78 [95 % confidence interval (CI) 0.62-0.90, P = 0.0001], 0.79 (95 % CI 0.63-0.90, P = 0.0001), 0.76 (95 % CI 0.6-0.88, P = 0.0006), and 0.84 (95 % CI 0.69-0.94, P < 0.0001), respectively. The optimal cut-off values were 12 % for SVVNICOM, SVVVigileo, and PPVauto, and 10 % for PPVmanual. SVV from NICOM® successfully predicts fluid responsiveness during surgery in the prone position. This totally non-invasive technique for assessing individual functional intravenous volume status would be useful in a wide range of surgeries performed in the prone position.
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