What PR fraction indicates need for PVR in repaired TOF?

Pulmonary valve replacement (PVR) is considered when PR fraction >=40% by CMR, RV end-diastolic volume index >=160 mL/m2, RV end-systolic volume index >=82 mL/m2, or RVEF <47% per ACC/AHA CHD guidelines.

What is the significance of residual VSD after TOF repair?

Residual VSD with Qp/Qs >1.5:1 indicates hemodynamically significant left-to-right shunt warranting re-intervention (catheter closure or surgical revision) to prevent LV volume overload.

What is the optimal timing for PVR in repaired TOF?

PVR should be performed before irreversible RV dilation occurs. Current evidence suggests intervention before RV EDVi >160 mL/m2 to optimize recovery of RV function post-PVR.

Tetralogy of Fallot Residual PR VSD

Assess residual pulmonary regurgitation (PR) and residual VSD after tetralogy of Fallot repair. Pulmonary regurgitation fraction >40% and residual VSD Qp/Qs >1.5 indicate re-intervention thresholds.

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Frequently Asked Questions

What PR fraction indicates need for PVR in repaired TOF?

What is the significance of residual VSD after TOF repair?

What is the optimal timing for PVR in repaired TOF?