Images in Clinical Medicine

Kim Eagle, M.D., Editor

Ostium Secundum Atrial Septal Defect

Judy R. Mangion, M.D.

N Engl J Med 1995; 332:1336May 18, 1995

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Article

Figure 1 The electrocardiogram of a 42-year-old woman with the ostium secundum type of atrial septal defect shows normal sinus rhythm with incomplete right bundle-branch block (RBBB), indicated by the rSR' pattern in leads V₁ and V₂ and the terminal S wave in V₆; right atrial enlargement (RAE), indicated by the tall P waves in leads II, III, and aVF; and right ventricular hypertrophy (RVH), indicated by the tall R waves in leads V₁ and V₂. The chest radiograph of the same patient shows a globular cardiac silhouette with prominent pulmonary arteries (p); cs denotes cardiac silhouette. Two-dimensional echocardiography confirmed the presence of an ostium secundum atrial septal defect.

Kim Eagle, M.D.

Judy R. Mangion, M.D.
Baystate Medical Center, Springfield, MA 01199