Evidence map›Paper›PMID 33685769›Full record

ArticleNeurophysiologie clinique = Clinical neurophysiology2021

Electrophysiological features of acute inflammatory demyelinating polyneuropathy associated with SARS-CoV-2 infection.

Antonino Uncini, Camillo Foresti, Barbara Frigeni, Benedetta Storti, Maria Cristina Servalli, Stefano Gazzina, Giuseppe Cosentino, Francesca Bianchi, Ubaldo Del Carro, Enrico Alfonsi and 5 more

Open access · greenAbstract read
In one paragraph

Article in Neurophysiologie clinique = Clinical neurophysiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 10% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

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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

15 authors at 6 institutions in 1 country.

Antonino UnciniDepartment of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio", Chieti, Italy. Electronic address: uncini@unich.it.
Camillo ForestiNeuropathophysiology, "Papa Giovanni XXIII" Hospital, Bergamo, Italy.
Barbara FrigeniNeuropathophysiology, "Papa Giovanni XXIII" Hospital, Bergamo, Italy.
Benedetta StortiNeuropathophysiology, "Papa Giovanni XXIII" Hospital, Bergamo, Italy.
Maria Cristina ServalliNeuropathophysiology, "Papa Giovanni XXIII" Hospital, Bergamo, Italy.
Stefano GazzinaNeuropathophysiology, ASST Spedali Civili, Brescia, Italy.
Giuseppe CosentinoDepartment of Brain and Behavioral Sciences, University of Pavia and IRCCS Mondino Foundation, Pavia, Italy.
Francesca BianchiNeurology and Neurophysiology Unit, IRCCS San Raffaele Scientific Institute, Vita Salute San Raffaele University, Milano, Italy.
Ubaldo Del CarroNeurology and Neurophysiology Unit, IRCCS San Raffaele Scientific Institute, Vita Salute San Raffaele University, Milano, Italy.
Enrico AlfonsiIRCCS Mondino Foundation, Pavia, Italy.
Stefano Cotti PiccinelliCenter for Neuromuscular Diseases, Unit of Neurology, ASST Spedali Civili and University of Brescia, Brescia, Italy.
Giovanni De MariaNeuropathophysiology, ASST Spedali Civili, Brescia, Italy.
Alessandro PadovaniCenter for Neuromuscular Diseases, Unit of Neurology, ASST Spedali Civili and University of Brescia, Brescia, Italy.
Massimiliano FilostoCenter for Neuromuscular Diseases, Unit of Neurology, ASST Spedali Civili and University of Brescia, Brescia, Italy.
Luigi IppolitiStatistics Unit, Department of Economics, University "G. d'Annunzio", Pescara, Italy.
Ospedale Papa Giovanni XXIII · ITUniversity of Brescia · ITAzienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia · ITUniversity of Chieti-Pescara · ITVita-Salute San Raffaele University · ITUniversity of Pavia · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo assess whether patients with acute inflammatory demyelinating polyneuropathy (AIDP) associated with SARS-CoV-2 show characteristic electrophysiological features.

methodsClinical and electrophysiological findings of 24 patients with SARS-CoV-2 infection and AIDP (S-AIDP) and of 48 control AIDP (C-AIDP) without SARS-CoV-2 infection were compared.

resultsS-AIDP patients more frequently developed respiratory failure (83.3% vs. 25%, P=0.000) and required intensive care unit (ICU) hospitalization (58.3% vs. 31.3%, P=0.000). In C-AIDP, distal motor latencies (DMLs) were more frequently prolonged (70.9% vs. 26.2%, P=0.000) whereas in S-AIDP distal compound muscle action potential (dCMAP) durations were more frequently increased (49.5% vs. 32.4%, P=0.002) and F waves were more often absent (45.6% vs. 31.8%, P=0.011). Presence of nerves with increased dCMAP duration and normal or slightly prolonged DML was elevenfold higher in S-AIDP (31.1% vs. 2.8%, P=0.000);11 S-AIDP patients showed this pattern in 2 nerves.

conclusionIncreased dCMAP duration, thought to be a marker of acquired demyelination, can also be oserved in critical illness myopathy. In S-AIDP patients, an increased dCMAP duration dissociated from prolonged DML, suggests additional muscle fiber conduction slowing, possibly due to a COVID-19-related hyperinflammatory state. Absent F waves, at least in some S-AIDP patients, may reflect α-motor neuron hypoexcitability because of immobilization during the ICU stay. These features should be considered in the electrodiagnosis of SARS-CoV-2 patients with weakness, to avoid misdiagnosis.

Indexed as

Action PotentialsAdultAgedAged, 80 and overCOVID-19Critical CareElectrodiagnosisElectrophysiological PhenomenaFemaleGuillain-Barre SyndromeHospitalizationHumansMaleMiddle AgedMotor NeuronsMuscle, SkeletalAcute inflammatory demyelinating polyradiculoneuropathyCritical illness myopathyDistal compound muscle action potential durationDistal motor latencyF-waveSARS-CoV-2 infection

Identifiers

PMID33685769
PMCPMC7891083
OpenAlexW3129212522

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.