Validation of pulse pressure variation and corrected flow time as predictors of fluid responsiveness in patients in the prone position S.-Y. Yang, J.-K.

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Presentation transcript:

Validation of pulse pressure variation and corrected flow time as predictors of fluid responsiveness in patients in the prone position S.-Y. Yang, J.-K. Shim, Y. Song, S.-J. Seo, Y.-L. Kwak British Journal of Anaesthesia Volume 110, Issue 5, Pages 713-720 (May 2013) DOI: 10.1093/bja/aes475 Copyright © 2013 The Author(s) Terms and Conditions

Fig 1 Flowchart of patient enrolment. British Journal of Anaesthesia 2013 110, 713-720DOI: (10.1093/bja/aes475) Copyright © 2013 The Author(s) Terms and Conditions

Fig 2 Mean, sd values of PPV (a) and corrected flow time (b) before fluid loading in responders (Rs) and non-responders (NRs) in the supine position and the prone position. In both the supine and the prone positions, PPV was significantly higher and corrected flow time was significantly lower in the Rs compared with the NRs. British Journal of Anaesthesia 2013 110, 713-720DOI: (10.1093/bja/aes475) Copyright © 2013 The Author(s) Terms and Conditions

Fig 3 ROC curves of automated PPV (PPVauto) and time-corrected aortic flow (FTc) of predictability for fluid responsiveness. (a) In the supine position, the AUC of PPVauto was 0.935 (95% CI: 0.870−0.999) with a cut-off value of 15% (sensitivity 73% and specificity 94%) and the ACU of FTc was 0.822 (95% CI: 0.682−0.961) with a cut-off value of 358 ms (sensitivity 88% and specificity 78%). (b) In the prone position, the AUC of PPVauto was 0.969 (95% CI: 0.912−1.000) with a cut-off value of 14% (sensitivity 97% and specificity 90%) and the AUC of FTc was 0.846 (95% CI: 0.706−0.985) with a cut-off value of 331 ms (sensitivity 77% and specificity 90%). CI, confidence interval. British Journal of Anaesthesia 2013 110, 713-720DOI: (10.1093/bja/aes475) Copyright © 2013 The Author(s) Terms and Conditions