Atrial septal defect ostium primum echocardiography

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Eli V. Gelfand, MD; Keri Shafer, M.D. [2];

Associate Editors-In-Chief: Cafer Zorkun, M.D., Ph.D. [3]; Priyamvada Singh, MBBS [[4]]

Assistant Editor-In-Chief: Kristin Feeney, B.S. [[5]]

Overview

Echocardiography may be used as a diagnostic tool in the evaluation of an atrial septal defect. Common malformations of the septal wall include: ostium primum, ostium secundum, sinus venosus, and patent foramen ovale. Uncommonly, a defect may occur in the coronary sinus. Specific characteristics exist in echocardiography to identify these classifications of atrial septal defects.

Echocardiography and Ostium Primum Defects

Characteristics of ostium primum defects include:

• Seen best on an apical 4-chamber view.
• Occurs at the lower part of the septum near the valvular inlet.
• Associated with cleft mitral valve, ventricular septal defect, atriovalvular regurgitation, abnormal valvular leaflet insertions and other endocardial cushion defects.

• 

  Defect is present in the lower portion of the inter-atrial septum.

Useful Links

Yale Congenital Heart Disease- ASD [6] Emedicine Sinus Venosus Defect