Redo surgical aortic valve replacement for bioprosthetic structural valve deterioration

Area of Science:

• Cardiovascular Surgery
• Heart Valve Disease
• Bioprosthetic Valves

Background:

• Structural valve deterioration (SVD) is a common complication requiring reoperation.
• Redo surgical aortic valve replacement (rSAVR) carries potential risks compared to primary surgery.

Purpose of the Study:

• To compare outcomes of primary bioprosthetic surgical aortic valve replacement (SAVR) versus isolated rSAVR due to SVD.
• To identify risk factors and assess the safety of rSAVR.

Main Methods:

• Retrospective comparison of clinical data from patients undergoing primary SAVR and rSAVR (2011-2022).
• Primary outcome: all-cause mortality or stroke during hospitalization.
• Secondary outcomes: myocardial infarction, re-exploration for bleeding, pacemaker implantation.

Main Results:

• A total of 2620 patients were analyzed; 6.6% underwent rSAVR.
• Primary SAVR patients were older and had fewer prior strokes.
• Univariate analysis showed higher mortality/stroke in rSAVR, but multivariable analysis and matched comparisons found no significant difference in adverse outcomes.

Conclusions:

• Initial univariate analysis suggests higher risk for rSAVR, but comorbidities largely explain this.
• Elective rSAVR can achieve outcomes comparable to primary SAVR.
• Patient selection and management of comorbidities are crucial for successful rSAVR.