Evidence map›Paper›PMID 32997370›Full record

ArticleEuropean journal of neurology2021

Muscle involvement in SARS-CoV-2 infection.

Lea Pitscheider, Mario Karolyi, Francesco R Burkert, Raimund Helbok, Julia V Wanschitz, Corinne Horlings, Erich Pawelka, Sara Omid, Marianna Traugott, Tamara Seitz and 8 more

Open access · hybridAbstract read
In one paragraph

Article in European journal of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 3 pooled it
4.0field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 3 syntheses or guidelines pooled it, 53 citations in OpenAlex.

  1. Pooled it
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  8. Zika virus infection disturbs development of human muscle progenitor cells.Frontiers in cellular and infection microbiology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors at 2 institutions in 1 country.

Lea PitscheiderDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Mario Karolyi4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, Vienna, Austria.
Francesco R BurkertDepartment of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.
Raimund HelbokDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Julia V WanschitzDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.ORCID 0000-0002-0207-9977
Corinne HorlingsDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Erich Pawelka4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, Vienna, Austria.
Sara Omid4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, Vienna, Austria.
Marianna Traugott4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, Vienna, Austria.
Tamara Seitz4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, Vienna, Austria.
Alexander Zoufaly4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, Vienna, Austria.
Elisabeth Lindeck-PozzaDepartment of Neurology, Kaiser Franz Josef Hospital, Vienna, Austria.
Ewald WöllDepartment of Internal Medicine, St. Vinzenz Hospital, Zams, Austria.
Ronny BeerDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.
Stefanie SeiwaldDepartment of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.
Rosa Bellmann-WeilerDepartment of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.
Harald HegenDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.ORCID 0000-0002-2833-6337
Wolfgang N LöscherDepartment of Neurology, Medical University Innsbruck, Innsbruck, Austria.ORCID 0000-0002-7593-3222
Innsbruck Medical University · ATKaiser-Franz-Josef-Spital · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeSince the outbreak of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic, several reports indicated neurological involvement in COVID-19 disease. Muscle involvement has also been reported as evidenced by creatine kinase (CK) elevations and reports of myalgia.

methodsCreatine kinase, markers of inflammation, pre-existing diseases and statin use were extracted from records of Austrian hospitalised COVID-19 patients. Disease severity was classified as severe in case of intensive care unit (ICU) admission or mortality. COVID-19 patients were additionally compared to an historical group of hospitalised influenza patients.

resultsThree hundred fifty-one patients with SARS-CoV-2 and 258 with influenza were included in the final analysis. CK was elevated in 27% of COVID-19 and in 28% of influenza patients. CK was higher in severe COVID-19 as were markers of inflammation. CK correlated significantly with inflammation markers, which had an independent impact on CK when adjusted for demographic variables and disease severity. Compared to influenza patients, COVID-19 patients were older, more frequently male, had more comorbidities, and more frequently had a severe disease course. Nevertheless, influenza patients had higher baseline CK than COVID-19, and 35.7% of intensive care unit (ICU)-admitted patients had CK levels >1,000 U/L compared to only 4.7% of ICU-admitted COVID-19 patients.

conclusionsHyperCKemia occurs in a similar frequency in COVID-19 and influenza infection. CK levels were lower in COVID-19 than in influenza in mild and severe disease. CK levels strongly correlate with disease severity and markers of inflammation. To date, it remains unclear whether hyperCKemia is due to a virus-triggered inflammatory response or direct muscle toxicity.

Indexed as

COVID-19Influenza, HumanHumansMaleMusclesPandemicsSARS-CoV-2COVID-19creatine kinasehyperCKemiainfluenza

Identifiers

PMID32997370
PMCPMC7537196
OpenAlexW3090169785

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.