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. 2021 Jan 30;49(3):491–500. doi: 10.1007/s15010-020-01572-8

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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. 2 — Trend of left ventricular global longitudinal strain and right ventricular free wall strain in patients with myocardial injury. Left ventricular global longitudinal strain (LV-GLS, a) and right ventricular free wall strain (RV-FWS, b) measurements in patients with COVID-19-associated myocardial injury at initial assessment and on follow-up after a median of 52 days. Red dots represent values below the reference value of LV-GLS of -16% (dotted black line, a) or RV-FWS of -20% (dotted black line, b), respectively. Green dots represent values within normal range. Dashed arrows represent improvement (green) or deterioration (red) of LV-GLS or RV-FWS. LV-GLS, left ventricular global longitudinal strain; RV-FWS, right ventricular free wall strain