TY - JOUR
T1 - Mitral-septal angle
T2 - A new two-dimensional echocardiographic index of left ventricular performance
AU - Abinader, Edward G.
AU - Kuo, Lawrence C.
AU - Rokey, Roxann
AU - Quinones, Miguel A.
N1 - Funding Information:
From the Section of Cardiology, Baylor College of Medicine, The Methodist Hospital; and the Heart Institute, Haifa City Medical Center (Rothschild), Technion Medical Faculty. Computational assistance was provided by the CLINFO Project, funded by grant RR-00350, Division of Research Resources, National Institutes of Health, Bethesda, Md. Received for publication July 1’7. 1984; revision received Feb. 25, 1985; accepted Apr. 2, 1985. Reprint requests: Miguel A. Quinones, M.D., Section of Cardiology, The Methodist Hospital, 6535 Fannin-MS, F-1001, Houston, TX 77030.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1985/8
Y1 - 1985/8
N2 - 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.
AB - 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.
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U2 - 10.1016/0002-8703(85)90160-7
DO - 10.1016/0002-8703(85)90160-7
M3 - Article
C2 - 4025114
AN - SCOPUS:0022201149
SN - 0002-8703
VL - 110
SP - 381
EP - 385
JO - American Heart Journal
JF - American Heart Journal
IS - 2
ER -