ObjectiveTo evaluate the results in surgical procedures of univentricular hearts. Patients and methodsRetrospective analysis of the 42 patients operated from 2013 to 2015. ResultsNeonatal palliation (16 patients): Blalock-Taussig shunt: 7 cases; Norwood procedure: 5 patients; Banding 4 cases. BT shunt: age 23 days (2-40); Aristóteles 7.5. Medium stay at PICU 12 days (5-32) and hospital 32 days (10-97). 1 reintervention due tu acute thrombosis. No mortality. Norwood procedure: 5 patients. Age 29 (6-90) days. Aristóteles 20.8. Stay at PICU 35 (19-57) days and hospital 48 days. Morbidity: 1 case of inferior vena cava thrombosis. Mortality: 1 case due to refratory septic shock. All cases have reached the Glenn procedure.Glenn procedure: 11 patients (1 case associated to Damus-Kaye-Stansel procedure). Age: 8(4-135) months. Aristóteles 9. Stay at PICU 17 (3-90) days and hospital 27 (7-119 days). Morbidity: 1 case of phrenic nerve paralysis.Fontan procedure: 15 patients. Age 56 (40-113) months. Aristóteles 11. Stay at PICU and hospital: 7 (4-81) and 24 (14-90). Morbidity: 1 case of cardiac tamponade due to chylopericardium, 1 case of persistent pleural effusion (reintervention and embolization of thoracic duct and 1 case of thrombosis of inferior vena cava. No mortality.Overall mortality 2.3% ConclusionsSurgery of univentricular hearts means complex high risk procedures. Currently, they can be performed successfully and patients are able to reach the definitive palliation with the Fontan procedure.