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Reexamining the Role of Surgical Aortic Valve Replacement After Mediastinal Radiation Therapy.
Annals of Thoracic Surgery 2017 August
BACKGROUND: The risk of aortic valve replacement (AVR) for patients after mediastinal radiation therapy (MRT) remains unaccounted for in traditional risk scores. The aim of this study was to examine perioperative and midterm outcomes in patients undergoing AVR after MRT in the current era.
METHODS: From 2000 to 2016, 49 consecutive patients previously exposed to MRT underwent AVR with or without concomitant procedures at a single center. Patients were divided into two groups: isolated AVR (n = 18) and AVR with concomitant procedures (n = 31). The logistic European System for Cardiac Operative Risk Evaluation II mean score was 2.8% ± 3.4% and The Society of Thoracic Surgeons mean score was 1.7% ± 1.5%. Median follow-up was 6.6 years and was 90% complete within 12 months of study closure.
RESULTS: Overall inhospital mortality was 10% (0% in the isolated group versus 16% in the concomitant group; p = 0.14). A total of 21 patients (47%) died at follow-up. Mean interval to death was 2.0 ± 1.1 years from surgery in the isolated group versus 1.4 ± 1.6 years in the concomitant group (p = 0.18). Actuarial survival was 93% ± 6%, 73% ± 11%, and 65% ± 13%, at 1, 3, and 5 years, respectively, in the isolated group versus 74% ± 8%, 44% ± 11%, and 37% ± 11% in the concomitant group (p = 0.03).
CONCLUSIONS: Isolated AVR can be performed safely in patients with MRT-induced disease. In contrast, AVR with concomitant procedures is associated with high mortality, which is vastly underestimated using traditional risk scores. In both groups, survival at 5 years is markedly impaired.
METHODS: From 2000 to 2016, 49 consecutive patients previously exposed to MRT underwent AVR with or without concomitant procedures at a single center. Patients were divided into two groups: isolated AVR (n = 18) and AVR with concomitant procedures (n = 31). The logistic European System for Cardiac Operative Risk Evaluation II mean score was 2.8% ± 3.4% and The Society of Thoracic Surgeons mean score was 1.7% ± 1.5%. Median follow-up was 6.6 years and was 90% complete within 12 months of study closure.
RESULTS: Overall inhospital mortality was 10% (0% in the isolated group versus 16% in the concomitant group; p = 0.14). A total of 21 patients (47%) died at follow-up. Mean interval to death was 2.0 ± 1.1 years from surgery in the isolated group versus 1.4 ± 1.6 years in the concomitant group (p = 0.18). Actuarial survival was 93% ± 6%, 73% ± 11%, and 65% ± 13%, at 1, 3, and 5 years, respectively, in the isolated group versus 74% ± 8%, 44% ± 11%, and 37% ± 11% in the concomitant group (p = 0.03).
CONCLUSIONS: Isolated AVR can be performed safely in patients with MRT-induced disease. In contrast, AVR with concomitant procedures is associated with high mortality, which is vastly underestimated using traditional risk scores. In both groups, survival at 5 years is markedly impaired.
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