Percutaneous Rescue for Critical Mitral Stenosis Late After Mitral Valve Repair

Area of Science:

• Cardiology
• Cardiac Surgery
• Medical Device Technology

Background:

• Mitral valve repair, including posterior leaflet cleft closure and annuloplasty ring implantation, can be complicated by long-term pannus ingrowth.
• Pannus formation can lead to severe mitral stenosis and catastrophic hemodynamic compromise years after initial repair.
• Nonrheumatic mitral valve disease requires careful monitoring post-intervention.

Observation:

• A patient presented with severe hemodynamic compromise due to significant pannus ingrowth causing mitral stenosis, years after a prior mitral valve repair.
• The patient's condition necessitated an urgent and complex management strategy.
• Echocardiographic findings confirmed severe mitral stenosis attributed to pannus.

Findings:

• A hybrid treatment strategy was successfully implemented, involving initial right ventricular assist device (RVAD) support.
• Percutaneous balloon mitral valvuloplasty (PBMV) was performed as an intermediate step.
• A definitive mitral valve reoperation was ultimately required to address the severe stenosis.

Implications:

• This case underscores the critical importance of routine clinical and echocardiographic surveillance for patients following mitral valve repair.
• A novel hybrid therapeutic approach, combining mechanical support, percutaneous intervention, and surgical re-intervention, can be effective in managing complex post-repair complications.
• Long-term monitoring is essential to detect and manage late complications like pannus ingrowth after mitral valve surgery.