Backgrounds: Hybrid operations (i.e. procedures combining surgical and catheter intervention) center around minimally invasive approaches to critical congenital heart anomalies or surgically inaccessible (or hardly accessible) lesions. Methods: Retrospective review of six patients, who underwent hybrid procedures from January 2000 to date, was performed. Results: Four patients (age: 8 -16 days) with hypoplastic left heart complex (HLHC) underwent bilateral pulmonary artery banding, ductal stenting and reverse Blalock-Taussig shunt. One patient (age: 23 days), who had right atrial isomerism (RAI), functionally single ventricle and obstructive total anomalous pulmonary venous drainage (TAPVD), received pulmonary artery banding and stenting of obstructive draining vein of TAPVD. One patient (age: 8.8 years), who developed right ventricular outflow tract obstruction (RVOTO) and left pulmonary artery (LPA) stenosis after Rastelli operation, received surgical RVOTO relief and LPA stenting. Balloon expandable stents were used for intra-operative stenting in all cases. There was no procedure-related complication. Among the patients with HLHC, one received extensive arch reconstruction and bidirectional cavopulmonary shunt (BCPS) 6 months later, and two are waiting for the 2nd stage operation. The fourth patient (with aortic atresia) suddenly died 21 days after the procedure, presumably due to inadequate coronary perfusion through the hypoplastic ascending aorta. The patient with RAI underwent sutureless repair of TAPVD one month later, and now is waiting for BCPS in a stable clinical state. In the patient who underwent LPA stenting, there remained no residual LPA stenosis. Conclusion : Hybrid procedures can be performed safely for critically ill babies with excellent early outcomes.