The Association of Functional Capacity With Right Atrial Deformation in Patients With Pulmonary Arterial Hypertension: A Study With Two-Dimensional Speckle Tracking

Right atrial deformation is significantly damaged in PH patients. Right atrial reservoir function can be estimated using 2D-STE, which gradually decreases in PH patients with different World Health Organization-functional class (WHO-FC). Right atrial PALS is a valuable factor for predicting the functional status and exercise capacity in PH patients.