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The pathophysiology and influencing factors on right ventricular (RV) deterioration from chronic pulmonary regurgitation (PR) after repair of tetralogy of Fallot (TOF)15). RBBB, right bundle branch block; RVEDVi, right ventricular end-diastolic volume index; RVOT, right ventricular outflow tract; VT, ventricular tachycardia.
