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  • Title: Greater occipital nerve block for the acute treatment of prolonged or persistent migraine aura.
    Author: Cuadrado ML, Aledo-Serrano Á, López-Ruiz P, Gutiérrez-Viedma Á, Fernández C, Orviz A, Arias JA.
    Journal: Cephalalgia; 2017 Jul; 37(8):812-818. PubMed ID: 27288355.
    Abstract:
    Background Presently, there is no evidence to guide the acute treatment of migraine aura. We aimed to describe the effect of greater occipital nerve (GON) anaesthetic block as a symptomatic treatment for long-lasting (prolonged or persistent) migraine aura. Methods Patients who presented with migraine aura lasting > 2 hours were consecutively recruited during one year at the Headache Unit and the Emergency Department of a tertiary hospital. All patients underwent a bilateral GON block with bupivacaine 0.5%. Patients were followed up for 24 hours. Results A total of 22 auras were treated in 18 patients. Auras consisted of visual ( n = 13), visual and sensory ( n = 4) or sensory symptoms alone ( n = 5). Eleven episodes met diagnostic criteria for persistent aura (>1 week) without infarction. The response was complete without early recurrence in 11 cases (50%), complete with recurrence in < 24 hours in two cases (9.1%), and partial with ≥ 50% improvement in six cases (27.3%). Complete responses without recurrence were more common in cases with prolonged auras lasting < 1 week than in those with persistent auras (72.7% vs. 27.3%; p = 0.033). Conclusions GON block could be an effective symptomatic treatment for prolonged or persistent migraine aura. Randomised controlled trials are still required to confirm these results.
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