The 2023 protocol for update to acute treatment of adults with migraine in the emergency department: The American Headache Society evidence assessment of parenteral pharmacotherapies.

The primary objective of this proposed guideline is to update the prior 2016 guideline on parenteral pharmacotherapies for the management of adults with a migraine attack in the emergency department (ED). We will conduct an updated systematic review and meta-analysis using the 2016 guideline methodology to provide clinical recommendations. The same search strategy will be used for studies up to 2023, with a new search strategy added to capture studies of nerve blocks and sphenopalatine blocks. Medline, Embase, Cochrane, clinicaltrials.gov, and the World Health Organization International Clinical Trial Registry Platform will be searched. Our inclusion criteria consist of studies involving adults with a diagnosis of migraine, utilizing medications administered intravenously, intramuscularly, or subcutaneously in a randomized controlled trial design. Two authors will perform the selection of studies based on title and abstract, followed by a full-text review. A third author will intervene in cases of disagreements. Data will be recorded in a standardized worksheet and subjected to verification. The risk of bias will be assessed using the American Academy of Neurology tool. When applicable, a meta-analysis will be conducted. The efficacy of medications will be evaluated, categorizing them as "highly likely," "likely", or "possibly effective" or "ineffective." Subsequently, clinical recommendations will be developed, considering the risk associated with the medications, following the American Academy of Neurology recommendation development process. The goal of this updated guideline will be to provide guidance on which injectable medications, including interventional approaches (i.e., nerve blocks, sphenopalatine ganglion), should be considered effective acute treatment for adults with migraine who present to an ED. The methods outlined in this protocol will be used in the design of a future systematic review and meta-analysis-informed guideline, which will then be assessed by and submitted for endorsement by the American Headache Society.

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