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. 2014 Jun 19;18(3):R126. doi: 10.1186/cc13932

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Copyright © 2014 Lima et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Temporal behavior of peripheral circulation parameters (CRT, Tskin-diff, and PI) and StO₂-derived variables (StO₂, RincStO₂, and RdecStO₂) during study protocol. Time points are defined as before nitroglycerin infusion (T_BL1), at the maximum dose of nitroglycerin (T_MX), and 30 minutes after cessation of nitroglycerin (T_BL2). CRT, capillary refill time (seconds); PIlog, log of perfusion index (percentage); RdecStO₂, rate of peripheral tissue oxygenation desaturation during arterial occlusion (percentage per minute); RincStO₂, rate of peripheral tissue oxygenation recovery after arterial occlusion (percentage per second); StO₂, peripheral tissue oxygenation (percentage); Tskin-diff, forearm-to-fingertip skin-temperature gradient (degrees Celsius). Lines represent individual values for each patient. Bars are mean ± 95% confidence interval (CI).