b'Scientific Session Abstracts SUNDAY APRIL 21, 2024Conclusion: TCAR is safer than TFCAS not only in patients with advanced arch disease and complex anatomy, but also in patients with mild arch disease and simple arch configuration. Current CMS decision will likely increase stroke and death outcomes of carotid stenting nationally.Table I: Baseline characteristics of patients undergoing carotid artery stentingstratified by arch type and degree of arch atherosclerosisGroup A Mild Group B MildGroup CGroup DAtherosclerosisModerateModerateModerate and Type I-II- Severe- Severe- SevereP-valueArch Atherosclerosis AtherosclerosisAtherosclerosisand Type I-II12, 980 (64.53) 1,175 (5.84) 5,124 (25.47) 835 (4.15)Age [mean (SD)] 71.77 (9.10) 75.00 (8.41) 73.85 (8.49) 76.33 (8.27) 0.001Obesity (BMI30) 4,634 (35.75) 293 (24.96) 1,699 (33.24) 193 (23.42) 0.001Sex (Female) 4,474 (34.47) 452 (38.47) 2,072 (40.44) 374 (44.79) 0.001Race (Non-white) 1,192 (9.19) 97 (8.26) 520 (10.15) 64 (7.66) 0.033Ethnicity(Hispanic or 585 (4.52) 37 (3.15) 195 (3.81) 47 (5.63) 0.008Insurance 8,770 (67.61) 903 (76.85) 3,681 (71.91) 658 (78.90) 0.001Symptomatic StatusAmaurosis fugax 687 (5.29) 61 (5.19) 236 (4.61) 36 (4.31) 0.198TIA 1,550 (11.94) 124 (10.55) 573 (11.18) 101 (12.10) 0.299Stroke 2,874 (22.14) 277 (23.57) 1,041 (20.32) 211 (25.27) 0.001ComorbiditiesDiabetes 4,957 (38.19) 347 (29.53) 2,068 (40.38) 265 (31.74) 0.001HTN 11,654 (89.78) 1,059 (90.13) 4,741 (92.60) 775 (93.04) 0.001CHF 2,090 (16.10) 176 (14.98) 1,003 (19.59) 166 (19.88) 0.001COPD 2,998 (23.10) 315 (26.83) 1,588 (31.02) 263 (31.50) 0.001CKD 4,337 (33.88) 391 (33.62) 1,957 (39.29) 306 (38.25) 0.001Dialysis 140 (1.08) 9 (0.77) 93 (1.82) 16 (1.92) 0.001ASA class IV-V 3,093 (24.21) 300 (26.11) 1,468 (29.14) 240 (29.02) 0.001Prior ProceduresPrior CABG/PCI 4,880 (37.60) 399 (33.96) 2,128 (41.54) 303 (36.29) 0.001Prior Major 265 (2.04) 15 (1.28) 113 (2.21) 16 (1.92) 0.241Prior Ipsilateral 1,977 (15.24) 139 (11.83) 751 (14.66) 115 (13.77) 0.012Prior Contralateral1,902 (14.66) 166 (14.13) 903 (17.63) 147 (17.60) 0.001CEA/CAS42 NDANNUAL MEETING|APRIL 1921, 2024|OCEANSIDE, CA 89'