Atrial septal defect ostium secundum

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Atrial Septal Defect Microchapters

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Overview

Anatomy

Classification

Ostium Secundum Atrial Septal Defect
Ostium Primum Atrial Septal Defect
Sinus Venosus Atrial Septal Defect
Coronary Sinus
Patent Foramen Ovale
Common or Single Atrium

Pathophysiology

Epidemiology and Demographics

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Case #1

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Priyamvada Singh, M.B.B.S. [2]; Assistant Editor(s)-In-Chief: Kristin Feeney, B.S. [3]

For a full discussion on atrial septal defects click here.

Overview

During fetal development, the septal wall may fail to fuse causing an atrial septal defect to arise. An ostium secundum atrial septal defect is one such type of malformation arising from the irregular development of the foramen ovale, septum secundum or septum primum.In this there is an absence of tissue in the region of fossa ovalis. It is the most common type of atrial septal defect.

Anatomy

Pathophysiology

Natural History

Epidemiology and Demographics

Echocardiography

Medical therapy

Indications for Surgical Repair

Surgical closure

Percutaneous closure

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