Aberrant origin of the right vertebral artery in a patient with truncus bicaroticus and aberrant right subclavian artery a possible baroreceptor nidus

ABSTRACT

Multiple aortic arch variations have been reported. Most of them are asymptomatic incidental findings, while others, like an aberrant right subclavian artery, can be symptomatic and require a surgical intervention. In this case report, we present the hemodynamic effects they might produce along with a short review of the literature. We, hereby, present the case of a patient with truncus bicaroticus, aberrant right subclavian artery and a right vertebral artery arising from the right common carotid artery. The patient was undergoing thymoma resection when she had two episodes of hypotension and bradycardia upon manipulation of the right vertebral artery origin. The presence of an ectopic baroreceptor is discussed