Virtual stenting as a method for optimizing right ventricular outflow tract stenting prior to radical correction of tetralogy of fallot in children

Objective. To evaluate the efficacy of right ventricular outflow tract (RVOT) stenting using virtual stenting (VS) technology in children with tetralogy of Fallot and Fallot-type congenital heart defects (CHD). Materials and methods. We analyzed 22 cases of RVOT stenting in patients aged 2.36 [0.73–3.07] months (2018–2024). In 8 cases, stenting planning was performed using CT angiography and VS technology. Results. The procedural success rate was 95%. Oxygen saturation increased from 80 [71–88]% to 95 [92–98]% (p < 0.001), systolic pressure gradient (SPG) decreased from 70 [41–80] mmHg to 30 [21–39] mmHg. VS implementation improved stent positioning accuracy to 95% (vs 78% without VS) and reduced reinterventions (1 vs 4 cases). Conclusion. RVOT stenting using virtual modeling technology demonstrates high clinical efficacy, significantly improving oxygenation and hemodynamic parameters while reducing the need for repeat interventions.