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. 2022 May 25;14(11):2203. doi: 10.3390/nu14112203

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Figure A1 — Examples of ECG in post-COVID period before and after clinical trial on the efficacy of FFS. (a) Left ECG-bradycardia of post-COVID patient A-va (severe COVID) at the 30th day after discharge from the hospital. Right ECG-normal ECG of the same patient at the 50th day after 20 days of FFS supplementation. (b) Left ECG-partial blockade of the left bundle of Hiss in post-COVID patient B-ev (severe COVID) at the 40th day after discharge from the hospital. Right panel-normal ECG of the same patient at the 60th day after 20 days of FFS supplementation. (c) Left ECG-dysmetabolic changes in myocardium of post-COVID patient L-ova (moderate COVID) at the 30th day after discharge from the hospital. Right panel normal ECG of the same patient at the 50th day after 20 days of FFS supplementation.