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Published on: February 14, 2017
Ischemic mitral valve disease: classification and systemic approach to management
J H Oury1, J C Cleveland, C G Duran
1Division of Cardiac Surgery, St. Patrick Hospital, Missoula, Montana 59802.
Insights
Mitral valve repair and replacement in coronary artery disease patients showed similar mortality. However, repaired valves experienced more structural dysfunction than replaced valves over time.
Area of Science:
- Cardiovascular Surgery
- Cardiac Surgery
- Adult Cardiac Surgery
Background:
- Coronary artery disease (CAD) frequently coexists with mitral valve pathology.
- Surgical management requires careful consideration of both conditions.
- Optimal surgical strategy remains debated.
Purpose of the Study:
- To compare outcomes of mitral valve repair versus replacement in patients with CAD.
- To analyze long-term structural valve dysfunction in both groups.
Main Methods:
- Retrospective review of 169 consecutive patients with CAD and mitral valve pathology.
- Patients underwent either mitral valve repair (n=87) or replacement (n=82) with coronary artery bypass grafting.
- Flexible ring annuloplasty and chordal-sparing techniques were employed.
Main Results:
- No significant difference in operative mortality between repair and replacement groups.
- Higher incidence of structural valve dysfunction in repaired mitral valves (6.0%) compared to replaced valves (0%).
- Concomitant coronary artery bypass grafting performed in all patients.
Conclusions:
- Mitral valve repair and replacement offer comparable short-term survival in high-risk CAD patients.
- Long-term durability favors mitral valve replacement due to lower rates of structural valve dysfunction.
Abstract:
One hundred sixty-nine consecutive patients with coronary artery disease and mitral valve pathology operated during the past 5 years were reviewed (98% follow-up). Eighty-seven patients underwent mitral valve repair and 82 mitral valve replacement with concomitant coronary artery bypass grafting (number of AV grafts = 3). An analysis of these patients (age range 48 to 92 [mean 69]) and a classification based on anatomic pathology of the mitral apparatus is presented. Flexible ring annuloplasty was utilized in all repairs and chordal-sparing techniques in all valve replacements. There was equal mortality for replacement and repair in this subset of high risk patients. Structural valve dysfunction of repaired valves was more common (5/81 [6.0]) than primary tissue valve failure after mitral valve replacement (0 patients).
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