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Nascer e Crescer
versión impresa ISSN 0872-0754
Resumen
PINHEIRO, Adriana et al. The benefit of prenatal diagnosis in transposition of great arteries . Nascer e Crescer [online]. 2011, vol.20, n.2, pp.87-91. ISSN 0872-0754.
Objective:To study the impact of prenatal diagnosis (PND) of transposition of the great arteries (TGA) on perioperative morbidity and mortality in a pediatric cardiology center. Methods: Retrospective study of newborns (NB) with simple TGA, with and without PND, who underwent corrective surgery, between January 2007 and July 2010. The following variables were analysed: clinical characteristics of the patients, age at surgery, duration of circulatory arrest, and outcome. Statistical analysis included the Student t and the X2 tests. Statistical significance was assessed by use of a cutoff value of P =0,05. Results: Among a total of 31 NB with TGA we isolated 17 cases of simple TGA, six with PND (Group 1) and 11 with neonatal diagnosis (Group 2). Deliveries of group 1 were all in tertiary hospital by caesarean section. The NB of Group 2 started prostaglandins at a mean time of 26,7 hours (h). The Rashkind procedure was carried out at a mean time of 27,2h vs 55,1h. In the second group the intensive care unit (ICU) admission occurred at 20,4h. The minimum oxygen saturation in preoperative varied between 82-95% vs 30-80%. In the first group 16,7% of the NB had preoperative metabolic acidosis vs 54,5% and maximum creatinine value varied between 0,5-0,8 mg/dl vs 0,6-1,1. The surgeries of the 1st group occurred on average at 9,0 days (d) of life vs 11,5d. Extra-corporal circulation and ventilation support durations were similar in both groups. The mean ICU stay was 4,7d vs 7,4d and the mean total hospital stay was 12,0d vs 29,9d. Complications in postoperative period: group 1 - cardiac tamponade (1), necrotizing enterocolitis (1); group 2: ventricular fibrillation (1), compressive hemothorax (1), transitory complete atrioventricular block (1), sepsis (1), diaphragm paresis (1), pericardial effusion (1) and death (1). Conclusion: The PND of TGA allowed us to schedule delivery in optimal conditions and provide adequate management, avoiding complications such as prolonged hypoxemia and metabolic acidosis.
Palabras clave : Transposition of great arteries; prenatal diagnosis; perioperative morbidity.