key: cord-0825030-0my7endu
authors: Defabio, Alexandria C.; Scott, Thomas R.; Stenberg, Robert T.; Simon, Erin L.
title: Guillain-Barré syndrome in a patient previously diagnosed with COVID-19
date: 2020-08-04
journal: Am J Emerg Med
DOI: 10.1016/j.ajem.2020.07.074
sha: bc406c1ca836caf38fbf9adee33cc28dd0cf689b
doc_id: 825030
cord_uid: 0my7endu

As the COVID-19 pandemic continues to progress, the medical community is rapidly trying to identify complications and patterns of disease to improve patient outcomes. In a recent systematic review, it has been reported that isolated cases of Guillain-Barre Syndrome (GBS) have occurred secondary to COVID-19 infection. GBS is defined as a rare, but potentially fatal, immune mediated disease of peripheral nerves and nerve roots that is usually triggered by infections. The incidence of GBS can therefore increase during outbreaks of infectious diseases, as was seen during the Zika virus epidemics in 2013 in French Polynesia and 2015 in Latin America. While several cases of GBS secondary to COVID-19 infection have been reported in Italy, only one case has been reported in the United States (US). The reported case in the US was a 54- year old male. We present a case of GBS secondary to a COVID-19 infection and believe this to be the first documented female case in the US and the second documented case in the US overall. The presented case aims to supplement the existing body of knowledge and to assist clinicians in managing complications of COVID-19.

J o u r n a l P r e -p r o o f A 70-year-old female presented to the Emergency Department (ED) for chest pain, shortness of breath, difficulty voiding urine, and numbness in her arms and legs which made walking difficult. She described her chest discomfort as pressure, which did not radiate. The patient had an intrathecal bupivacaine pump implanted to manage reflex sympathetic dystrophy (RSD) and was worried the pump might be malfunctioning. Three months prior to her ED visit the patient had COVID-19 symptoms which included fever, shortness of breath, dry cough and a positive COVID-19 test result. The patient's past medical history was significant for RSD, fibromyalgia, gastroesophageal reflux disease (GERD), hiatal hernia, and asthma. She denied tobacco or alcohol use. Vital signs were blood pressure 133/77 mm/Hg, heart rate 92 beats per minute, temperature 97.5°F orally, respirations 16 breaths per minute, SpO2 98% on room air. A bladder scan showed 740mL of urine. Neurologic exam revealed 4 out of 5 strength in the lower extremities bilaterally, 2+ patellar reflexes, and no saddle paresthesia. While the patient's sensation was grossly intact, she reported decreased sensation especially in the lower extremities. The rest of her exam was normal. While in the ED, the patient had stool incontinence, and exam revealed decreased rectal tone. The patient's deep tendon reflexes were reassessed and had decreased to 0 Patellar and 0 Achilles reflexes. The biceps reflex was 1+ bilaterally. The patient's negative inspiratory force (NIF) was normal. The remainder of her physical examination was unremarkable. Cervical, thoracic, and brain CT scans were unremarkable. X-rays of the chest, abdomen, and thoracic spine were also unremarkable. Neurology, neurosurgery and anesthesia were consulted. Anesthesia determined that the patient's bupivacaine pump was delivering inadequate doses although this was not felt to play a role in her symptoms.

Given the patient's presentation, physical exam, lab values, and imaging the differential diagnosis included local anesthetic systemic toxicity (LAST) syndrome, GBS secondary to COVID-19, and acute ascending demyelinating syndrome secondary to an unknown cause. Her pump was underdelivering medication, so LAST syndrome was ruled out. The patient was started on intravenous acyclovir; however, this was discontinued when it was determined that the patient was negative for both herpes simplex virus (HSV) and varicella zoster virus (VZV). The patient was admitted to the inpatient unit with neurology consultation and administered five rounds of intravenous immunoglobulin therapy (IVIG). At the time of discharge her lower extremity strength was 5/5 and her sensation had largely returned. Given that the patient responded to IVIG therapy, a diagnosis of GBS was presumed secondary to a previous COVID-19 infection.

Literature suggests the novel coronavirus may have neurotrophic and neuroinvasive characteristics. 1 The mechanism of GBS in patients infected with COVID-19 has not yet been 

and as a result, it creates immune-mediated processes. 9 GBS is an acute monophasic paralyzing illness that is recognized as a heterogenous syndrome with several variant forms. 10 It is thought that COVID-19 could evoke an immune response, which would in turn generate a humoral or T-cell independent antibody response. 9, 11 The antibodies produced could then bind to structurally identical glycans present on nerve gangliosides, resulting in acute polyneuropathy with the immune response directed towards the myelin or axon of peripheral nerves. 2 Peripheral nerve remyelination is a natural physiological response; however, axonal regeneration is slow and can be irreversible if widespread. 11 It is important for emergency physicians to understand that GBS can occur weeks to months after COVID-19 infection, and that prompt recognition and treatment improves outcomes. Author Contribution Statement: AD conceived the case report. AD and RS contributed to the medical management of the patient in the emergency department. TS and ELS drafted the manuscript, and all authors contributed substantially to its revision. AD takes responsibility for the paper as a whole.

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