TY - CHAP M1 - Book, Section TI - Defects of the Atrial Septum A1 - Pineda, Andres M. A1 - Sommer, Robert J. A1 - Rhodes III, John F. A1 - Beohar, Nirat A2 - Baliga, R. R. A2 - Lilly, Scott M. A2 - Abraham, William T. PY - 2018 T2 - Color Atlas and Synopsis of Interventional Cardiology AB - A 34-year-old woman was seen in the outpatient clinic for a 1-year history of worsening dyspnea on exertion (New York Heart Association class III), 2-pillow orthopnea, bilateral pedal edema, and occasional episodes of palpitations. Her transthoracic echocardiogram revealed an ostium secundum atrial septal defect (ASD), significant enlargement of the right ventricle, evidence of left-­to-right shunt with a pulmonary to systemic flow (Qp/Qs) ratio of 2.3, and normal left ventricular ejection fraction (Figure 26-1). Transesophageal echocardiogram confirmed an ostium secundum ASD of 18-mm diameter with sufficient tissue rims and ruled out additional congenital defects (Figure 26-2). She underwent successful percutaneous closure of her ostium secundum ASD with a 22-mm atrial septal occluder device using intracardiac echocardiography guidance. After 6 months, she remains asymptomatic and a repeat transthoracic echocardiogram revealed no residual shunt across the interatrial septum and significant reduction in right ­ventricular volume. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accesscardiology.mhmedical.com/content.aspx?aid=1160207394 ER -