AbstractKeywordssyncopevasovagalautonomic nervous system diseasescarotid artery diseasescerebrovascular disorderscarotid artery thrombosisGet full access to this articleView all access options for this article.Get accessReferences1. Lewis T . A lecture on vasovagal syncope and the carotid sinus mechanism. Br Med J. 1932;1(3723):873–876. https://www.bmj.com/content/1/3723/873. Accessed October 10, 2018.2. Long B Koyfman A . Vascular causes of syncope: an emergency medicine review. J Emerg Med. 2017;53(3):322–332. https://www.ncbi.nlm.nih.gov/pubmed/28662832.