Novel right-angled origin and severe tortuosity of the right subclavian artery: a previously unrecognized challenge in transradial access.
C, Y., R, D., A, N., R, M., & F, L. (2026). Novel right-angled origin and severe tortuosity of the right subclavian artery: a previously unrecognized challenge in transradial access.. Folia morphologica. https://doi.org/10.5603/fm.110308
C Y, R D, A N, R M, F L. Novel right-angled origin and severe tortuosity of the right subclavian artery: a previously unrecognized challenge in transradial access.. Folia morphologica. 2026; doi: 10.5603/fm.110308
C Y, R D, A N, et al. Novel right-angled origin and severe tortuosity of the right subclavian artery: a previously unrecognized challenge in transradial access.[J]. Folia morphologica. 2026. DOI: 10.5603/fm.110308.
@article{c2026,
author = {Yu C and Ding R and Nie A and Mao R and Liu F},
title = {Novel right-angled origin and severe tortuosity of the right subclavian artery: a previously unrecognized challenge in transradial access.},
journal = {Folia morphologica},
year = {2026},
doi = {10.5603/fm.110308},
note = {PMID: 42345219},
}
TY - JOUR AU - Yu C AU - Ding R AU - Nie A AU - Mao R AU - Liu F TI - Novel right-angled origin and severe tortuosity of the right subclavian artery: a previously unrecognized challenge in transradial access. T2 - Folia morphologica PY - 2026 DO - 10.5603/fm.110308 AN - PMID:42345219 ER -
BACKGROUND: The right subclavian artery typically originates from the lateral wall of the brachiocephalic trunk without tortuosity. Its anatomical variations pose significant challenges during transradial access. Although variations of the right subclavian artery are well-documented, no study has reported a variation in its origin angle. MATERIALS AND METHODS: We report an exceptionally rare dual variation identified during dissection and discuss the clinical significance of this novel variation, emphasizing the technical challenges it poses during transradial access. RESULTS: The right subclavian artery demonstrated a right-angled origin from the posterior wall of the brachiocephalic trunk, in contrast to the normal lateral wall origin, accompanied by severe tortuosity. CONCLUSIONS: To our knowledge, this is the first documented case of the right subclavian artery origin angle variation. This variation may reduce transradial access success rates and increase the risks of procedural complications and mortality. The finding expands the known spectrum of the right subclavian artery anatomical variations and identifies a previously unrecognized challenge in transradial access.