Introduction: We aimed to evaluate and compare the clinical and electrophysiological features of post-COVID-19 Guillain-Barré syndrome (GBS) and non-COVID-19 GBS patients over the last five years.
Methods: We retrospectively analyzed patients diagnosed with GBS between October 2016 and September 2021. They were divided into five groups according to the flu season and the COVID-19 pandemic. Groups 1-4 were identified as non-COVID-19 groups, whereas Group 5 constituted the post-COVID-19 group. At the sixth month the Hughes functional grading scale score (HFGSS) was noted. Clinical and electrophysiological findings were compared between the groups.
Results: Fifty-nine GBS patients were enrolled in this study. Post-COVID-19 GBS patients had more facial diplegia than non-COVID-19 GBS patients. Except for facial diplegia, post-COVID-19 GBS patients did not differ from non-COVID-19 GBS patients regarding the need for mechanical ventilation, loss of ambulation, type of GBS, response to treatment, and patient outcomes. In 67% of post-COVID-19 GBS patients, HFGSS was ≤2. Acute inflammatory demyelinating polyneuropathy (AIDP) was the most common subtype in post-COVID-19 GBS patients. The 2018-2019 flu season saw more ambulation loss than other flu seasons. The 2017-2018 influenza season had the highest number of patients (39%).
Conclusion: The clinical and electrophysiological features of GBS may differ according to year, infectious etiology, and severity of seasonal viral infections. Post-COVID-19 GBS patients mostly had the AIDP subtype with frequent facial diplegia. The prognosis of post-COVID-19 GBS patients was good. The patients responded well to treatment with intravenous immunoglobulin and plasma exchange.
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