Letter to the EditorA rare lethal combination of premature closure of the foramen ovale and d-transposition of the great arteries with intact ventricular septum
Introduction
D-transposition of the great arteries (d-TGA) is the most common cyanotic congenital heart disease in neonates. The discordant ventriculo-arterial arrangement results in parallel circulation. Unless there is an avenue for adequate mixing of deoxygenated and oxygenated blood, this cardiovascular malformation is not compatible with extrauterine life. Complete premature closure of the foramen ovale in d-TGA with intact ventricular septum is extremely rare, with only three case reports in the literature [1], [2], [3]. All reported cases resulted in early neonatal demise despite aggressive treatment including extracorporeal membrane oxygenation (ECMO) in one [3]. In this paper, we report a fourth case of premature closure of the foramen ovale in an infant with d-TGA and intact ventricular septum who became cyanotic and decompensated immediately after birth.
Section snippets
Case report
A 2880 gm, 38 weeks' gestation female infant was born to a healthy mother. Prenatal fetal ultrasound at 32 weeks' gestation showed, by report, normal four-chambered cardiac anatomy with two ventricular outflow tracts identified. Cardiac size and position were reported as normal. The infant was delivered vaginally after an unremarkable labor. The infant cried spontaneously immediately after birth. Apgar scores were 7 and 8 at 1 and 5 min, respectively. The infant subsequently became dusky, limp
Discussion
Infants with d-TGA have parallel systemic and pulmonary circulations, and are dependent on shunting of oxygenated blood to the systemic circulation to survive postnatally. In 1979, Bhatt first reported a rare lethal combination of premature closure of the foramen ovale and d-TGA with intact ventricular septum [1]. Since then, antenatal restriction of the foramen ovale and constriction of the ductus arteriosus have been recognized to be associated with increasing risk of morbidity and mortality
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