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KMID : 0364019990320040353
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Korean Journal of Thoracic and Cardiovascular Surgery
1999 Volume.32 No. 4 p.353 ~ p.357
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The Effect of Chordae Preservation in Mitral Valve Replacement
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Kim Kong-Soo
Jo Jung-Ku
Gu Ja-Hong
Kim Tae-Ho
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Abstract
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Background: Mitral valve replacement(MVR) with chordal preservation in patients with mitral vlavular disease has been proven to be beneficial for left ventricular function and for reduction of postoperative complication.
Material and Method: From January 1995 to July 1996, the early postoperative results of mitral valve replacement were compared between 20 patients who underwent chordae resection(classic MVR group) and 10 patients who underwent chordae
preservation(preservation MVR group) in the Department of Thoracic and Cardiovascular Surgery, Chunbuk National University Hospital.
Result: There was no significant difference between the two groups in age, sex, NYHA functional class, cardiothoracic ratio, echocardiographic finding, cardiopulmonary bypass time and aortic cross clamping time. The difference between
preoperative and postoperative cardiothoracic ratio after 3 months was not statistically significant. At echocardiographic left ventricular evaluation, ejection fraction and fractional shortening decreased slightly in the preservation group then
preoperative value (p=0.47, p=0.12), however, decreased significantly in the classic MVR group(p=0.03, p=0.04), and were statistically significant between the two groups(p=0.03, p=0.02).
Conclusion: We conclude that MVR with chorda preservation seems to have a beneficial effect on postoperative left ventricular performance in mitral valve disease than the classic MVR.
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KEYWORD
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Mitral valve replacement, Chorda tendinae,
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