Echocardiographic Indices for Optimal Timing of Mitral Valve Repair in Degenerative Mitral Regurgitation in Japanese Patients

Figures

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  Central Figure.

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  Figure 1.. Receiver operating characteristic curve analyses of preoperative transthoracic echocardiographic parameters to predict postoperative left ventricular dysfunction. The receiver operating characteristic curve demonstrates good discriminatory ability of preoperative left ventricular end-systolic diameter (LVESD) in predicting postoperative left ventricular dysfunction (area under the curve=0.819; P<0.001). LVEDD, left ventricular end-diastolic diameter; LVEF, left ventricular ejection fraction.

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  Figure 2.. Frequency of detection of preoperative and postoperative left ventricular (LV) dysfunction according to LV end-systolic diameter (LVESD) and LV ejection fraction (LVEF). Frequency of preoperative and postoperative LV dysfunction detected from conventional cut-off values (A) and novel cut-off values (B).

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  Figure 3.. Comparison of cardiac events after mitral valve repair between patients with and without left ventricular (LV) dysfunction. Kaplan-Meier curves for freedom from cardiac death and hospital admission for heart failure. The rate of freedom from cardiac events was significantly decreased in patients with postoperative LV dysfunction.

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  Figure 4.. Changes in left ventricular (LV) ejection fraction (LVEF) over postoperative time and comparison of cardiac events after mitral valve (MV) repair among the 4 groups. All patients were divided into 4 groups based on the postoperative course of LVEF. Kaplan-Meier curves for freedom from cardiac death and hospital admission for heart failure in the 4 groups. The rate of freedom from cardiac event patients was significantly diminished in Group 4, followed by Group 3. MVP, mitral valve prolapse.