Transaortic occlusion of collateral arteries to the lung by detachable valved balloons in a patient with tetralogy of Fallot.

1 5-year-old boy with tetralogy of Fallot, near-atresia of the right ventricular outflow tract, and large collateral arteries to the lungs, who previously underwent infundibulectomy without closure of the ventricular septal defect.

Transaortic occlusion of collateral arteries to the lung by detachable valved balloons (metrizimide-filled balloons).

Successful occlusion of collateral arteriessafety