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. 2021 Jan 7;49(4):661–670. doi: 10.1097/CCM.0000000000004862

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Copyright © 2021 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the Society of Critical Care Medicine and Wolters Kluwer Health, Inc.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Figure 1. — The coronavirus disease 2019 (COVID-19) patients had a lower hemoglobin (Hb) (A) and systemic hematocrit (sHct) (B) and a higher heart rate (HR) (C) than volunteers. D, The mean arterial pressure (MAP) in the COVID-19 patients and volunteers was similar.