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Late (two-year) follow-up after percutaneous balloon mitral valvotomy
P C Block1, I F Palacios, E H Block
1St. Vincent Hospital and Medical Center Heart Institute, Portland, Oregon 97225.
The American Journal of Cardiology
|February 15, 1992
Summary
Percutaneous balloon mitral valvotomy (PBMV) offers effective midterm results for mitral stenosis. While initially improving mitral valve area, long-term catheterization shows a slight decrease, though echocardiography remains stable.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- Percutaneous balloon mitral valvotomy (PBMV) is an alternative to surgical commissurotomy for mitral stenosis.
- Early outcomes of PBMV show comparable symptom improvement and increased mitral valve area.
Purpose of the Study:
- To evaluate the 2-year clinical and hemodynamic outcomes of PBMV.
- To compare mitral valve area and New York Heart Association (NYHA) class before, immediately after, and 2 years post-PBMV.
Main Methods:
- Prospective study of 41 patients undergoing PBMV for mitral stenosis.
- Clinical evaluation, NYHA class assessment, 2D/Doppler echocardiography, and transseptal cardiac catheterization were performed at baseline and 2-year follow-up.
Main Results:
- Mitral valve area increased significantly immediately after PBMV (1.1 to 1.8 cm²) but showed a non-significant decrease at 2 years (1.6 cm²).
- Echocardiography revealed a smaller increase in mitral area post-PBMV and no significant decrease at 2 years.
- At follow-up, 17 patients were NYHA class I, 20 were class II, and 4 were class III.
Conclusions:
- PBMV provides effective therapy with good midterm results for selected patients with mitral stenosis.
- While catheterization shows a slight decline in mitral valve area at 2 years, echocardiographic measures remain stable, indicating sustained benefit.