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Preservation of normal left ventricular geometry during mitral valve replacement
C F Sintek1, T A Pfeffer, G Kochamba
1Department of Cardiac Surgery, Southern California Regional Center, Kaiser Permanente Medical Center, Los Angeles 90027, USA.
The Journal of Heart Valve Disease
|September 1, 1995
Summary
Preserving mitral valve subvalvular apparatus during mitral valve replacement (MVR) maintains left ventricular (LV) geometry and function. This technique is safe and yields good intermediate-term results for patients undergoing MVR.
Area of Science:
- Cardiovascular Surgery
- Cardiac Mechanics
- Echocardiography
Background:
- The subvalvular apparatus is crucial for left ventricular (LV) systolic function and mechanics.
- Maintaining mitral annulopapillary muscle continuity is key to preserving normal LV geometry.
Purpose of the Study:
- To evaluate the safety and efficacy of preserving subvalvular apparatus during mitral valve replacement (MVR).
- To assess the impact of this technique on left ventricular geometry and function.
Main Methods:
- Retrospective analysis of 375 patients undergoing MVR between 1990 and 1995.
- Subvalvular apparatus preservation or reconstruction in 183 patients.
- Intraoperative transesophageal and follow-up transthoracic echocardiography for functional assessment.
Main Results:
- Preservation of LV geometry was achieved in patients with retained or reconstructed subvalvular apparatus.
- Echocardiography demonstrated preserved global LV function post-MVR.
- No evidence of LV outflow tract obstruction was observed.
Conclusions:
- Preserving LV geometry via chordal preservation or replacement during MVR is a safe and effective technique.
- This approach leads to favorable intermediate-term outcomes in patients undergoing mitral valve replacement.