COVID-19 Associated Neuromuscular Disorders - An Electrodiagnostic Perspective

Area of Science:

• Neurology
• Infectious Diseases
• Electrophysiology

Background:

• COVID-19 infection can manifest with diverse neurological complications.
• Neuromuscular disorders (NMD) are increasingly recognized sequelae of viral infections, including SARS-CoV-2.
• Electrodiagnostic (Edx) studies are crucial for characterizing NMD.

Purpose of the Study:

• To describe the electrodiagnostic findings in patients with NMD following COVID-19 infection.
• To identify the prevalence of different NMD subtypes associated with COVID-19.
• To investigate the association between invasive ventilation and the development of NMD after COVID-19.

Main Methods:

• Cross-sectional study design.
• Inclusion of patients with a history of COVID-19 and neuromuscular symptoms.
• Performance of detailed neurological examinations and electrodiagnostic tests, including nerve conduction studies (NCS) and electromyography (EMG).
• Descriptive statistical analysis of demographic and electrophysiological data.

Main Results:

• Polyneuropathy was the most common electrophysiological diagnosis (40%).
• Guillain-Barré Syndrome (GBS) was the most frequent type of polyneuropathy (23.6%).
• Patients requiring invasive ventilation had a significantly higher risk of developing myopathic (OR 2.5) and neuropathic disorders (OR 2.6) compared to those not ventilated.

Conclusions:

• Polyneuropathy is the predominant NMD associated with COVID-19 infection.
• History of invasive ventilation is a risk factor for developing neuropathic disorders post-COVID-19.
• Further research is warranted to elucidate the causal relationship between COVID-19, invasive ventilation, and NMD.