Autoimmune-associated early double bioprosthetic valve failure: A case report

Area of Science:

• Cardiology
• Immunology
• Surgical Innovation

Background:

• Bioprosthetic heart valves (BHVs) offer improved hemodynamics but face limited durability due to structural valve degeneration (SVD).
• Early SVD in BHVs necessitates complex interventions and poses significant patient risk.
• Understanding the mechanisms behind early SVD is crucial for improving patient outcomes.

Purpose of the Study:

• To present a case of early SVD in a patient with bioprosthetic mitral and aortic valves.
• To investigate potential contributing factors to early SVD, including autoimmune responses.
• To underscore the critical complications associated with SVD and cardiac surgery.

Main Methods:

• A case report detailing a 70-year-old male with severe heart failure 4 years post-BHV replacement.
• Diagnostic imaging confirmed SVD in both mitral and aortic valves.
• Postoperative assessment included investigation for inflammatory markers and antibody profiles.

Main Results:

• The patient experienced severe heart failure due to SVD, requiring high-risk redo surgery.
• Postoperatively, the patient developed refractory systemic inflammatory response syndrome (SIRS) to cardiopulmonary bypass (CPB), leading to death.
• Elevated isolated anti-cardiolipin IgM antibodies suggested a potential autoimmune contribution to valve thrombosis and early SVD.

Conclusions:

• Early SVD in BHVs requires comprehensive diagnostic evaluation.
• Individualized anticoagulation strategies are essential for at-risk patients.
• Severe inflammatory complications, such as SIRS, can occur post-cardiac surgery and must be recognized.