Thoraco-Cervical Computed Tomographic Angiography to Determine an Appropriate Access Route for Mechanical Thrombectomy

OBJECTIVE: We investigated whether thoraco-cervical CTA provided useful information to determine an access route (AR) for mechanical thrombectomy (MT). METHODS: We included acute stroke patients who (1) were admitted between January 2018 and December 2018 and (2) underwent MT for large artery occlusion in the anterior circulation and were able to be treated within 24 hours of the time last known to be well. We evaluated the AR, occlusion site, aortic arch (AA) type, take-off angles (TOA) between the arch and the left common carotid artery (CCA) or the brachiocephalic artery (BCA), successful insertion rate (SIR) of the guiding catheter, puncture-to-initial angiography time (PtIA), and puncture-to-reperfusion time (PtR). RESULTS: We analyzed 32 patients: femoral-artery access (group F) in 26 and brachial-artery access (group B) in 6 patients. There were no differences in arch types between the two groups, but there were differences in occlusion sites: proximal CCA occlusion in two patients in the B group. Moreover, the TOA of the CCA was less than 25° in two patients in the B group. In the F and B groups, the SIR was 100%, the median PtIA was 9.0 and 9.6 minutes, and the median PtR was 54 and 72 minutes, respectively. CONCLUSION: Thoraco-cervical CTA provided useful information to determine the appropriate AR for MT. SIR of 100% and short PtIA were achieved.