ORIGINAL INVESTIGATIONS: Usefulness of Tricuspid Annular Velocity in Identifying Global RV Dysfunction in Patients with Primary Pulmonary Hypertension: A Comparison with 3D Echo-Derived Right Ventricular Ejection Fraction

ORIGINAL INVESTIGATIONS: Usefulness of Tricuspid Annular Velocity in Identifying Global RV Dysfunction in Patients with Primary Pulmonary Hypertension: A Comparison with 3D Echo-Derived Right Ventricular Ejection Fraction