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• W3087287162 abstract "Background The impact of novel alternative access and valve type on radiation exposure during transcatheter aortic valve replacement (TAVR) has not yet been evaluated. This study sought to determine the impact of a transarterial approach and prosthesis type on physician and patient exposure to radiation during TAVR. Methods This was a prospective study including 140 consecutive patients undergoing TAVR by transfemoral (n = 102) or transcarotid (TC) (n = 38) access at 2 centers. Implanted valves were the self-expanding Evolut R/PRO system (Medtronic, Minneapolis, MN; n = 38) and the balloon-expandable SAPIEN 3 valve (Edwards Lifesciences, Irvine, CA; n = 102). The primary endpoint was first operator radiation exposure. The secondary endpoint was patient radiation exposure. Results First operator radiation exposure was 4-fold greater during TC TAVR (P < .001). The use of a self-expanding valve was associated with a longer x-ray time (P = .015) and a 2-fold greater first operator radiation dose (P = .018). Patient radiation dose was not significantly affected by arterial approach (P = .055) or valve type (P = .095). After adjustment for potential confounders, the TC approach remained associated with a 174.8% (95% confidence interval, 80.6-318.3, P < .001) increase in first operator radiation dose, whereas the use of a self-expanding valve no longer influenced the first operator dose (P = .630). Conclusions TC access and the use of a self-expanding valve were associated with a 4- and 2-fold greater first operator radiation exposure during TAVR procedures, respectively. Unlike the arterial approach, the effect of bioprosthesis type on radiation exposure was mainly related to x-ray time and was no longer significant after adjustment. The impact of novel alternative access and valve type on radiation exposure during transcatheter aortic valve replacement (TAVR) has not yet been evaluated. This study sought to determine the impact of a transarterial approach and prosthesis type on physician and patient exposure to radiation during TAVR. This was a prospective study including 140 consecutive patients undergoing TAVR by transfemoral (n = 102) or transcarotid (TC) (n = 38) access at 2 centers. Implanted valves were the self-expanding Evolut R/PRO system (Medtronic, Minneapolis, MN; n = 38) and the balloon-expandable SAPIEN 3 valve (Edwards Lifesciences, Irvine, CA; n = 102). The primary endpoint was first operator radiation exposure. The secondary endpoint was patient radiation exposure. First operator radiation exposure was 4-fold greater during TC TAVR (P < .001). The use of a self-expanding valve was associated with a longer x-ray time (P = .015) and a 2-fold greater first operator radiation dose (P = .018). Patient radiation dose was not significantly affected by arterial approach (P = .055) or valve type (P = .095). After adjustment for potential confounders, the TC approach remained associated with a 174.8% (95% confidence interval, 80.6-318.3, P < .001) increase in first operator radiation dose, whereas the use of a self-expanding valve no longer influenced the first operator dose (P = .630). TC access and the use of a self-expanding valve were associated with a 4- and 2-fold greater first operator radiation exposure during TAVR procedures, respectively. Unlike the arterial approach, the effect of bioprosthesis type on radiation exposure was mainly related to x-ray time and was no longer significant after adjustment." @default.
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• W3087287162 date "2021-05-01" @default.
• W3087287162 modified "2023-10-17" @default.
• W3087287162 title "Radiation Exposure During Transcatheter Aortic Valve Replacement: Impact of Arterial Approach and Prosthesis Type" @default.
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• W3087287162 doi "https://doi.org/10.1016/j.athoracsur.2020.06.114" @default.
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