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Visual evoked potential and nerve conduction study findings in patients recovered from COVID-19.
Koskderelioglu, Asli; Eskut, Neslihan; Ortan, Pinar; Ozdemir, Hulya Ozkan; Tosun, Selma.
  • Koskderelioglu A; Department of Neurology, University of Health Sciences, Izmir Bozyaka Education and Research Hospital, Saim Cikrikci cad No: 59, Bozyaka, Karabaglar, 35170, Izmir, Turkey. copura@gmail.com.
  • Eskut N; Department of Neurology, University of Health Sciences, Izmir Bozyaka Education and Research Hospital, Saim Cikrikci cad No: 59, Bozyaka, Karabaglar, 35170, Izmir, Turkey.
  • Ortan P; Department of Neurology, University of Health Sciences, Izmir Bozyaka Education and Research Hospital, Saim Cikrikci cad No: 59, Bozyaka, Karabaglar, 35170, Izmir, Turkey.
  • Ozdemir HO; Department of Infectious Diseases and Clinical Microbiology, University of Health Sciences, Izmir Bozyaka Education and Research Hospital, Saim Cikrikci cad No:59, Bozyaka, Karabaglar, 35170, Izmir, Turkey.
  • Tosun S; Department of Infectious Diseases and Clinical Microbiology, University of Health Sciences, Izmir Bozyaka Education and Research Hospital, Saim Cikrikci cad No:59, Bozyaka, Karabaglar, 35170, Izmir, Turkey.
Neurol Sci ; 43(4): 2285-2293, 2022 Apr.
Article in English | MEDLINE | ID: covidwho-1739338
ABSTRACT

OBJECTIVE:

COVID-19 infection is associated with peripheral neuropathy. However, subclinical neurological involvement may occur anytime, and diagnostic methods that reveal this subclinical involvement are not well established. We aimed to assess the subclinical neurological involvement by visual evoked potential (VEP) measurements and nerve conduction studies (NCS) and explore the relationship between neurological electrophysiological findings and the severity of COVID-19 infection.

METHODS:

Seventy-six patients recovered from COVID-19 infection, and 44 healthy controls were enrolled in the study. Patients were assessed for clinical and demographic parameters. NCS and VEP analyses were performed to detect any peripheral neuropathy or optic neuropathy in both groups.

RESULTS:

None of the COVID-19 patients had electrophysiological evidence of peripheral neuropathy. However, patients with COVID-19 pneumonia had significant abnormalities in several peripheral nerve measurements compared to patients without pneumonia. Although P100 parameters did not differ significantly between patients and controls, 12 patients with COVID-19 had prolonged P100 latencies.

CONCLUSIONS:

We detected subclinical afferent visual pathway abnormality evaluated by VEP analysis. In addition, we found subtle electrophysiological features in the NCS of the patients presented with COVID-19 pneumonia. However, our findings did not fortify the diagnosis of peripheral neuropathy or optic neuropathy. Further studies are needed to determine the characteristics of COVID-19-related peripheral neuropathy/optic neuropathy whether it has distinct clinical features and disease course.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Optic Nerve Diseases / COVID-19 Type of study: Experimental Studies / Prognostic study / Randomized controlled trials Topics: Long Covid Limits: Humans Language: English Journal: Neurol Sci Journal subject: Neurology Year: 2022 Document Type: Article Affiliation country: S10072-021-05816-9

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Optic Nerve Diseases / COVID-19 Type of study: Experimental Studies / Prognostic study / Randomized controlled trials Topics: Long Covid Limits: Humans Language: English Journal: Neurol Sci Journal subject: Neurology Year: 2022 Document Type: Article Affiliation country: S10072-021-05816-9