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Flow chart depicting study protocol for analysis of systolic pulmonary artery pressures measurements by right heart catheterization and Doppler echocardiography over 6 years. *Noncomprehensive examinations (eg, transoesophageal echocardiography to rule out intracardiac thrombus prior to cardioversion of atrial fibrillation, examination to rule out pericardial effusion, focused examination to rule out left ventricular thrombus, and stress echocardiography).
