The Value of Mitral valve E point septal separation as an index of assessment of left ventricular systolic function

Abstract

Background and objectives: There are several methods of assessment of left ventricular function utilizing M-mode echocardiography, the most popular one being geometrically derived ejection fraction, for which its validity is compromised in case of abnormal geometry or regional wall motion abnormalities. Mitral valve E septal separation estimated by M mode echocardiography or cardiac magnetic resonance imaging can be used as an index of left ventricular systolic function assessment. The aim of this study is to assess the value of mitral valve E septal separation estimated by M mode echocardiography in evaluation of left ventricular systolic function in patients assessed in two hospitals in Erbil city. Methods: from March 2016 to May 2019, 564 patients were randomly selected in Rizgary and Erbil teaching hospitals were included in this study. For all cases; demographic data were recorded, echocardiography performed by cardiologists, ejection fraction estimated by the most appropriate method and mitral valve E septal separation estimated by M mode scanning. Results: Means of age, ejection fraction, mitral valve E septal separation were 52.4±14.8, 65.4±10.4% and 3.87±4.1 respectively. Male to female ratio was 0.64 (220/344). There was strong highly significant negative correlation between ejection fraction and E septal separation, value of 6.9 mm was the upper normal level representing ejection fraction of 55%. The sensitivity and specificity of mitral valve E septal separation more than 7 mm as a reference to low left ventricular systolic function were 100% and 99%. Conclusions: Mitral valve E septal separation is reliable and easily measurable index of assessment of left ventricular systolic function; value more than 7 mm is indicating abnormal systolic function with sensitivity of 100% and specificity of 99%.