Modes of failure of Trifecta aortic valve prosthesis.

Abstract

OBJECTIVESSeveral concerns have been recently raised regarding the durability of Trifecta prostheses. Different mechanisms of early failure were reported. Our aim was to study in a large population the modes of failure of Trifecta valves.METHODSWe conducted a retrospective analysis of patients who underwent surgical aortic valve replacement with a Trifecta prosthesis during the period 2010–2018. Details regarding the mode of failure and haemodynamic dysfunction were collected for patients who underwent reintervention for structural valve failure. The Kaplan–Meier method was used to calculate survival. Competing risk analysis was performed to calculate the cumulative risk of reintervention for structural valve failure.RESULTSThe overall population comprises 1228 patients (1084 TF model and 144 TFGT model). Forty-four patients—mean patients’ age at the time of the first implant 69 (standard deviation: 12) years and 61% female—underwent reintervention for structural valve failure after a median time of 63 [44–74] months. The cumulative incidence of reintervention for structural valve failure was 0.16% (SE 0.11%), 1.77% (SE 0.38%) and 5.11% (SE 0.98%) at 1, 5 and 9 years, respectively. In 24/44 patients (55%), a leaflet tear with dehiscence at the commissure level was found intraoperatively or described by imaging assessment. The cumulative incidence of reintervention for failure due to leaflet(s) tear was 0.16% (SE 0.11%), 1.08% (SE 0.29%) and 3.03% (SE 0.88%) at 1, 5 and 9 years, respectively.CONCLUSIONSLeaflet(s) tear with dehiscence along the stent post was the main mode of early failure, up to 5 years, after Trifecta valves’ implantation.