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s S111 880 Shortand long-term follow-up of left-ventricular function after surgical treatment of mitral valve for chronic regurgitation. A. Klisiewicz 1, P. Leszek 2, P. Michalek 3, J. Korewicki 2, P. Hoffman 3 . 1Institute of Cardiology, Congenital Heart Disease Department, Warsaw, Poland; 2Institute of Cardiology, Heart Failure Department, Warsaw, Poland; 3Institute of Cardiology, Congenital Heart Disease Department, Warsaw, Poland Background: There are ambiguous data concerning late LV remodeling following mitral valve surgery due to chronic regurgitation (MR). Methods: We performed serial echocardiographic evaluation of 35 consecutive patients prior and following surgical treatment of mitral valve for chronic regurgitation. Studies were performed 1 week before operation (I), then at 1 week (II) and 9 – 13 months (III) (mean 11 months) after surgery. End-diastolic and systolic diameters (LVEDD and LVESD) and left atrial (LA) size were recorded from parasternal longaxis view, and ejection fraction (EF) was calculated by Teicholtz formula. Statistical significance of achieved values was assessed. Materials: The study group consisted of 35 patients (25 males, 10 females, age 63±9 yrs) All pts were symptomatic due to the significant MR: NYHA II (n = 8), III (n = 25), IV (n = 2). All subjects had excluded coronary artery disease by coronary angiogram. 30 patients underwent successful mitral valve replacement without preservation of subvalvular apparatus and 5 mitral valve repair. Results: Echo – Doppler examination before procedure discovered isolated significant MR (4+) with left ventricular dilatation (LVEDD 6.6cm±0.3, LVESD 4.3cm±0.8, left atrial enlargement (6.0 cm±1.1), and pulmonary hypertension (systolic PAP 46 mmHg ± 16). Changes of assessed parameters obtained in consecutive examinations are depicted in table 1. All changes were independent of age, LV size, EF or NYHA status.

880 Short- and long-term follow-up of left-ventricular function after surgical treatment of mitral valve for chronic regurgitation