Charles D Kassardjian1, Urvi Desai2, Pushpa Narayanaswami3. 1. Division of Neurology, Department of Medicine, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada. 2. Carolinas Neuromuscular ALS MDA Clinic, Atrium Health, Charlotte, North Carolina. 3. Beth Israel deaconess Medical Center/ Harvard Medical School, Boston, Massachusetts.
We thank Dr. Vinciguerra for her letter. She correctly points out that a pandemic is an evolving situation, rather than a static one, and recommendations may not apply to all time points during the pandemic. She describes an earlier pandemic scenario, which she terms the “contingency standard of care,” in which there are still sufficient resources to perform electrodiagnostic studies (EDX). It is in this situation that the coronavirus disease (COVID) guidance document applies most readily.
She also points to a second pandemic scenario, which she terms the “crisis standard of care,” where medical resources, including staffing, are not available to carry out EDX studies.Dr. Vinciguerra stratifies the availability of resources and their effect on EDX testing in her letter. We did not address resource availability in our guidance document, although it is clearly a driver of the ability to perform EDX or other testing.
Our intention was to provide recommendations regarding patient selection for EDX testing to clinicians during the time of the pandemic. However, in such a scenario where resources are unavailable or must be directed toward critical care, most, if not all, EDX studies may have to be postponed. Clinicians will have to rely on the clinical features and other diagnostic testing that may be available, accepting more diagnostic uncertainty before deciding on empiric treatment in acute situations, such as suspected Guillain Barre syndrome or myasthenic crisis. The “possibly urgent” category in our guidance document may also have to be handled similarly.
Resumption of EDX will depend on the subsequent availability of resources and will vary by location.
CONFLICT OF INTEREST
Charles Kassardjian has received honoraria or serve on an advisory board for Alexion, Akcea, Takeda, and Sanofi Genzyme. Urvi Desai has received honoraria for speaker bureau or advisory board participation from Alexion, Akcea, Stealth Biotherapeutics, and CSL Behring. Pushpa Narayanaswami has received grant support from the Patient Centered Outcomes Research Institute, Momenta Pharmaceuticals, provided consultation for Alexion, Momenta, and Argenx.
ETHICAL PUBLICATION STATEMENT
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