Use of the Medtronic Freestyle for aortic valve infection: A retrospective propensity score matched analysis

Journal of Cardiac Surgery
Jerry EasoOtto E Dapunt

Abstract

Aortic valve and prosthetic valve endocarditis present a challenging subgroup of patients at high risk. We analyzed our experience using the Medtronic Freestyle in full root technique for the treatment of these cases over 18-year time period. We investigated the endocarditis subgroup from our cohort of 971 patients and compared results against other valve types with propensity score matching implementing nearest neighbor method. T-test, χ2 test, logistic regression, and Cox regression were performed. Fifty-four patients from the Freestyle group (FS) were matched against 54 patients from a cohort of 376 aortic valve/root endocarditis patients treated by other valve types (non-FS). Hospital mortality was 9/54 (16.7%) in the FS vs 13/54 (24.1%) in the non-FS group (P = .33). Variables age (P = .003) and renal impairment (P = .026) had an impact on mortality according to Cox regression analysis for early results. Variables with significant risk for long-term mortality included postoperative renal impairment (P = .0001) and multiorgan failure (P = .0001). Recurrent infection was low (1.8% for FS and 3.7% for non-FS group), and freedom from reoperation was 97.2%. Use of the Medtronic Freestyle was no significant risk factor for long-...Continue Reading

References

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Citations

Jul 30, 2021·Journal of Cardiothoracic Surgery·Anja OsswaldAlexander Weymann

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