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  • Title: Transventricular balloon dilation and stenting of the RVOT in small infants with tetralogy of fallot with pulmonary atresia.
    Author: Cools B, Boshoff D, Heying R, Rega F, Meyns B, Gewillig M.
    Journal: Catheter Cardiovasc Interv; 2013 Aug 01; 82(2):260-5. PubMed ID: 22753282.
    Abstract:
    INTRODUCTION: The management of small infants with tetralogy of Fallot (TOF) with pulmonary atresia (PA) and hypoplastic pulmonary arteries can be very challenging. METHODS: In three small infants (weight range 2,200-3,600 g, pulmonary trunk 2.0-3.2 mm), initial palliation consisted of sternotomy, transventricular puncture of the right ventricular outflow tract and atretic pulmonary valve, followed by balloon dilation (n = 1) or stent deployment (n = 2) from the right ventricle into the pulmonary trunk (stent diameter 5-6 mm, length 16 mm). RESULTS: The procedure resulted in adequate palliation with good anterograde flow to the pulmonary arteries and near normal saturations in all three patients (>92%); there was no associated morbidity. Additional transvenous stenting was required in all patients because of progressive muscular infundibular stenosis after a median of 3 months. Two patients evolved to full repair at the age of 5 months and one patient with multiple hilar stenoses requires additional percutaneous procedures through the stented RV outflow tract. CONCLUSION: Transventricular balloon dilation and stenting of the RVOT through medial sternotomy as initial palliation strategy appears a safe and well tolerated alternative treatment in small infants with TOF with PA and a hypoplastic pulmonary trunk.
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