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Revista Colombiana de Cardiología

versión impresa ISSN 0120-5633


RUZ, Miguel et al. Results of Norwood's operation in patients with hypoplastic left heart syndrome. Rev. Colom. Cardiol. [online]. 2009, vol.16, n.2, pp.83-88. ISSN 0120-5633.

Introduction: hypoplastic left heart syndrome is a complex congenital heart disease that requires surgical correction during the first days of life. Treatment is paliative and Norwood's operation is the first surgery to be performed. In this intervention the right ventricle is systemic and the pulmonary circulation occurs through a systemic-to-pulmonary or ventricle-to-pulmonary fistula. Objective: inform our experience with Norwood's operation in patients diagnosed with hyoplastic left heart syndrome. Methods: retrospective, observational and descriptive study. 32 patients admitted with diagnosis of hypoplastic left heart syndrome were included. They underwent Norwood surgery between December 2001 and October 2007. Patients were classified into two groups according to the type of technique used. Group I: Blalock-Taussig fistula and group II: fistula between the right ventricle and the pulmonary artery. Results: 32 patients were included; 12 (37.5%) belonged to group I and 20 (62.5%) to group II. 19 (59.4%) were men and 13 (40.6%) were women. Mean days of life at the time of surgery was 14.7 days. 14 (43.7%) patients had mitral-aortic atresia. Mean extracorporeal circulation time was 192 minutes with a range of 95 to 310 min and the mean time for the circulatory stop was 60 min. The average of mechanical ventilation was 153 hours and the sternal closure was realized at a media of 56 hours. Mortality in group I was 83% and in group II 50%, for an overall mortality of 62% until 2006; for 2007, mortality was 0%. Conclusions: current advances in prenatal diagnostic techniques, medical treatment, hemodynamic intervention and surgical techniques are promising for improving the survival of these patients. Nowadays we rely on three management options: cardiac transplant, Norwood operation (implemented in our service with an increased survival rate in the last year) and a hybrid procedure as alternative for patients at high risk for Norwood I surgery.

Palabras clave : hypoplastic left heart syndrome; Norwood; extracorporeal circulation; Sano technique.

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