Coil reduction of the right ventricular cavity in a boy with pulmonary atresia, intact ventricular septum, and an aneurysmal coronary sinusoid.

Coronary sinusoids are often found in patients with pulmonary atresia and intact ventricular septum. We report on a 4-year-old boy with such pathology in whom, after completion of the Fontan-circulation, the pulsatile flow through a major sinusoid significantly increased the size of a coronary artery up to aneurysmal dimensions. Because percutaneous closure of the sinusoid was unsuccessful, the right ventricular cavity was partially obliterated with coils. This resulted in a significant decrease of right ventricular stroke volume, regression of the pulsatility and of the coronary size, with good clinical result at 1.5 years of follow-up.