Variations in carotid sinus anatomy and their relevance to carotid interventions.
Wydawnictwo Via Medica
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West, C., Brassett, C., & Gaunt, M. (2018). Variations in carotid sinus anatomy and their relevance to carotid interventions.. Folia morphologica, 77 (4), 693-697. https://doi.org/10.5603/fm.a2018.0017
The carotid sinus (CS) is a dilatation in the carotid bifurcation usually at the origin of proximal internal carotid artery (ICA). It contains baroreceptors which influence blood pressure. Variations in the location of the CS are of importance as atheromatous plaque commonly forms in this area and procedures such as carotid endarterectomy are performed to reduce the risk of stroke. Inadvertent stimulation of the CS baroreceptors during interventions can have profound effects on the patient’s hemodynamic status both intra- and postoperatively, causing serious complications. The aim of this study is to determine the inter- and intra-individual variations in the location of the CS. Eighty-two carotid arteries were dissected bilaterally from 41 cadavers. The locations of the CS were noted and divided into four potential sites. The commonest site is the origin of the ICA (74.3%), but the CS can also be found in the terminal part of the common carotid artery (CCA) inferior to the bifurcation (17.1%); at the bifurcation involving the terminal CCA and origins of both the external carotid (ECA) and internal carotid arteries (7.32%); and at the origin of the ECA (1.22%). In individual cadavers, the CS was located at the origin of the ICA in 97.6% on at least one side. The sites of the CS were asymmetrical in 34.1%. Clinicians performing carotid interventions should be aware of these anatomical variations to avoid inadvertent stimulation of the CS which can cause profound bradycardia and hypotension.
Carotid Sinus, Humans, Dissection, Aged, Aged, 80 and over, Female, Male, Anatomic Variation
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External DOI: https://doi.org/10.5603/fm.a2018.0017
This record's URL: https://www.repository.cam.ac.uk/handle/1810/275604
Attribution 4.0 International
Licence URL: http://creativecommons.org/licenses/by/4.0/
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