Abstract:Objective To investigate the relationship between transient ischemic attack (TIA) and ABCD3-I score. Methods The clinical and imaging data of 112 patients with TIA were retrospectively analyzed, using ABCD3 - I score to risk stratification, analyzing the relationship of the different risk stratification with responsible vascular lesions. The other characters were analyzed by Logistic regression analysis to explore related risk factors. After the follow-up of patients for 3 months, the incidence of cerebral infarction was recorded. Results As the ABCD3 - I score increasing, intracranial artery stenosis rate also increased (P?0.05), but the neck vascular stenosis rate showed a decreasing trend. Cervical vascular ultrasound (CVUS) showed that intimal thickening (44.82%) was the main pathological change of cervical vessels in the low-risk group, and the main manifestation in the medium-high risk group was soft plaque formation (35.53%). Transcranial Doppler examination (TCD) showed that the majority of the patients in the low-risk group were vascular wall sclerosis (52.00%), and the majority of the patients in the middle and high-risk groups were intracranial vascular blood flow velocity abnormalities (60.53%, 72.73%). The main risk show in low- and middle-risk group was the single vascular lesions (85.19% and 62.50%), the main risk of high-risk group showed multiple vascular lesions (79.41%), and blood supply artery lesions among three groups were significant differences (P?0.05). Logistic regression analysis found that responsible vascular stenosis≥ 50% [OlR?=?3.425 (95% CI: 1.402, 8.956), P?=?0.008], side limb weakness [OlR?=?4.612 (95% CI: 1.572, 12.876), P?=?0.006], unstable plaque [OlR?=?3.243 (95% CI: 1.276, 7.124), P?=?0.001] were risk factors of progression within 90 d after TIA for cerebral infarction (P?0.05). The incidence of stroke in each group was significantly different (P?< 0.05). Conclusion ABCD3 -I score of patients with TIA can reflect the degree of vascular stenosis, the nature of plaque, the number of vascular lesions, and it combined with risk factors can prevent and treat cerebral infarction at an early stage.