alexa Prenatal diagnosis of transposition of the great arteries over a 20-year period: improved but imperfect.
Pediatrics

Pediatrics

Journal of Neonatal Biology

Author(s): EscobarDiaz MC, , , Freud LR, ,

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Abstract OBJECTIVE: To evaluate temporal trends in the prenatal diagnosis of transposition of the great arteries with intact ventricular septum (TGA/IVS) and its impact on neonatal morbidity and mortality. METHODS: We included in this study cohort newborns with TGA/IVS who were referred for surgical management to our center over a 20-year period (1992-2011). The study period was divided into five 4-year periods and the primary outcome was rate of prenatal diagnosis. Secondary outcomes included neonatal preoperative status and perioperative survival. RESULTS: Of the 340 patients with TGA/IVS, 81 (23.8\%) had a prenatal diagnosis. The rate of prenatal diagnosis increased over the study period, from 6\% in 1992-1995 to 41\% in 2008-2011 (P < 0.001). Compared to patients with a postnatal diagnosis, balloon atrial septostomy (BAS) was performed earlier in patients with a prenatal diagnosis (0 days after delivery vs 1 day after delivery, respectively; P < 0.001) and fewer prenatally diagnosed neonates required mechanical ventilation (55.6\% vs 68.0\%; P = 0.03). Between patients with a prenatal or postnatal diagnosis of TGA/IVS, there were no statistically significant differences in the incidence of preoperative acidosis (16.0\% vs 25.5\%; P = 0.1), need for preoperative extracorporeal membrane oxygenation (2.5\% vs 2.7\%; P = 1.0) or mortality (one preoperative and no postoperative deaths among prenatally diagnosed patients compared with four preoperative and six postoperative deaths among postnatally diagnosed patients). CONCLUSIONS: The prenatal detection rate of TGA/IVS has improved but still remains below 50\%, suggesting the need for strategies to increase detection rates. The mortality rate was not statistically significantly different between prenatally and postnatally diagnosed patients, however, there were significant preoperative differences with regard to earlier BAS and fewer neonates that required mechanical ventilation. Ongoing work is required to ascertain whether prenatal diagnosis confers long-term benefits. Copyright © 2014 ISUOG. Published by John Wiley & Sons Ltd.
This article was published in Ultrasound Obstet Gynecol and referenced in Journal of Neonatal Biology

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