Purpose: To investigate the potential risk of the retropharyngeal internal carotid artery (RICA) during nasotracheal intubation (NTI).
Methods: We retrospectively surveyed 2028 patients and 90 healthy controls (HC) with neck computed tomography angiography (CTA). The incidence of RICA was analyzed, as well as the correlation between the average minimum carotid-pharyngeal distance (CPD) and the carotid-median plane distance (CMD).