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. 2021 Feb 25;36(2):429–436. doi: 10.1007/s10877-021-00669-1

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — Bland–Altman and scatter plot comparing PPV_CNAP and PPV_INV. a Bland–Altman plot illustrating the mean of the differences (bold horizontal line) and 95% limits of agreement (lower and upper dashed horizontal lines) between PPV_CNAP and PPV_INV. b Scatter plot with Deming regression (bold line) illustrating the relation of PPV_CNAP and PPV_INV. PPV_CNAP CNAP finger-cuf-derived automatically calculated pulse pressure variation using the PPV_CNAP-algorithm, PPV_INV arterial catheter-derived manually calculated pulse pressure variation