• Lidia Cabañes-Martínez, Marta Villadóniga, Liliana González-Rodríguez, Lesly Araque, Alba Díaz-Cid, Ignacio Ruz-Caracuel, Héctor Pian, Susana Sánchez-Alonso, Samira Fanjul, Marta Del Álamo, and Ignacio Regidor.
• Clinical Neurophysiology Department, Hospital Universitario Ramón y Cajal, Madrid, Spain. Electronic address: lidia.cabanes@salud.madrid.org.
• Clin Neurophysiol. 2020 Dec 1; 131 (12): 2809-2816.

ObjectiveCoronavirus disease 2019 (COVID-19) has a high incidence of intensive care admittance due to the severe acute respiratory syndrome (SARS). Intensive care unit (ICU)-acquired weakness (ICUAW) is a common complication of ICU patients consisting of symmetric and generalised weakness. The aim of this study was to determine the presence of myopathy, neuropathy or both in ICU patients affected by COVID-19 and whether ICUAW associated with COVID-19 differs from other aetiologies.MethodsTwelve SARS CoV-2 positive patients referred with the suspicion of critical illness myopathy (CIM) or polyneuropathy (CIP) were included between March and May 2020. Nerve conduction and concentric needle electromyography were performed in all patients while admitted to the hospital. Muscle biopsies were obtained in three patients.ResultsFour patients presented signs of a sensory-motor axonal polyneuropathy and seven patients showed signs of myopathy. One muscle biopsy showed scattered necrotic and regenerative fibres without inflammatory signs. The other two biopsies showed non-specific myopathic findings.ConclusionsWe have not found any distinctive features in the studies of the ICU patients affected by SARS-CoV-2 infection.SignificanceFurther studies are needed to determine whether COVID-19-related CIM/CIP has different features from other aetiologies. Neurophysiological studies are essential in the diagnosis of these patients.Copyright © 2020 International Federation of Clinical Neurophysiology. Published by Elsevier B.V. All rights reserved.

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