Doppler tissue imaging evaluation of right ventricular function at rest and during dobutamine infusion in patients after repair of tetralogy of Fallot

Reliable, non-invasive evaluation of right ventricular function, especially in congenital heart disease, is challenging. The aim of this study was to evaluate Doppler tissue imaging (DTI) parameters of lateral tricuspid annular motion, mean rate of pressure rise during RV contraction (mean dP/dt) and indexed right ventricular (RV) stroke volume (RVSVi) as RV function indices in repaired tetralogy of Fallot (TOF). DTI evaluation was performed in 25 repaired-TOF patients, aged 11+/-6, at rest and during dobutamine infusion and 20 controls at rest. TOF patients had lower (P