Relationship Between Interatrial Septal Thickness and Left Atrial Geometry Assessed by Echocardiography in Patients with Rheumatic Mitral Stenosis

Abstract

Objective: To evaluate the relationship between interatrial septal thickness (IAST) and left atrial geometry in patients with rheumatic mitral stenosis (RMD), as measured by transesophageal and transthoracic echocardiography. Methods: Transesophageal and transthoracic echocardiograms were used to detect IAST and left atrial geometry respectively in 100 patients. Results: IAST and interatrial septal thickening fraction (IASTF) were significantly different in patients with different degrees of mitral stenosis. The left atrial volume change fraction (LAVCF) and IASTF were positively correlated (r = 0.766, P < 0.001). Conclusion: There is important clinical significance for transesophageal and transthoracic echocardiography in evaluating the relationship between IAST and left atrial geometry, IAST and IASTF can reflect the changes in left atrial geometry