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Before atrial septal defect closure. (A) Chest X-ray. (B) A 23-mm secundum atrial septal defect on transthoracic echocardiography is visible (arrow). (C) Dilated RA and RV in the apical four-chamber view. (D) Mitral regurgitation of moderate severity (arrow). (E) Insufficient aortic rim and (F) superior rim on transesophageal echocardiography (arrows).
RA, right atrium; RV, right ventricle.
