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. 2015 Oct 20;15:209. doi: 10.1186/s12883-015-0464-4

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© Burton et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Representative hemoglobin volume index (HVx) bar graphs from individual neonates illustrate identification of the optimal mean arterial blood pressure (MAP_OPT) at the nadir of HVx. MAP_OPT values were 45 mmHg for patient 1 (a) and 50 mmHg for patient 2 (b). Patients 5 (c) and 25 (d) did not have a nadir in HVx and were therefore coded as having an unidentifiable MAP_OPT