Mitral-septal angle: A new two-dimensional echocardiographic index of left ventricular performance

Edward G. Abinader, Lawrence C. Kuo, Roxann Rokey, Miguel A. Quinones

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The diagnostic value of a new two-dimensional echocardiographic measurement, the mitral septal angle, was evaluated as an index of left ventricular (LV) function in 122 patients. Their mean age was 56.5 years and the majority (80%) suffered from coronary artery disease, 46 with an acute myocardial infarction. Mitral septal angle was easily and reproducibly measured. An ejection fraction (EF) of ≥50% and an angle ≤30 degrees were used as normal cut-off values. A strong negative correlation was found between the angle and radionuclide EF (-0.821) and angiographic EF (-0.82) in patients without acute myocardial infarction. For patients with acute myocardial infarction, the correlation was -0.722. For the entire group, the correlation coefficient was -0.742. In patients without acute infarction, the sensitivity, specificity, and predictive accuracy of the mitral septal angle were 92%, 86%, and 89%, respectively. In acute infarction, sensitivity dropped to 70% without change in specificity (89%). We conclude that mitral septal angle is a simple index of LV function which relates well to EF, particularly in patients with chronic heart disease.

Original languageEnglish (US)
Pages (from-to)381-385
Number of pages5
JournalAmerican Heart Journal
Issue number2
StatePublished - Aug 1985

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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