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Three newborn infants with transposition of the great arteries (TGA) and intact ventricular septum (IVS) developed postnatal persistent pulmonary hypertension of the newborn (PPHN) and were successfully treated with inhaled nitric oxide (iNO). Inter-vention with balloon atrial septostomy (BAS) was performed in two of the infants before the iNO treatment, but they continued to be severely hypoxic with metabolic acidosis. However, the iNO immediately improved oxygenation and the clinical condition. The third neonate had a moderately large atrial communication and echocardiographic signs of PPHN. He received iNO before BAS with dramatic clinical improvement, which therefore postponed BAS. Conclusion: Early diagnosis of PPHN and treatment with iNO may improve final outcome in neonates with TGA and IVS. In the presence of moderately large atrial communication and PPHN, treatment with iNO might be considered before BAS.
Three newborn infants with transposition of the great arteries (TGA) and intact ventricular septum (IVS) developed postnatal persistent pulmonary hypertension of the newborn (PPHN) and were successfully treated with inhaled nitric oxide (iNO). Inter-vention with balloon atrial septostomy ( BAS) was performed in two of the infants before the iNO treatment, but they continued to be severely hypoxic with metabolic acidosis. However, the iNO immediately improved oxygenation and the clinical condition. The third neonate had a moderately large atrial communication and echocardiographic signs of PPHN. He received iNO before BAS with dramatic clinical improvement, which made postponed BAS. Conclusion: Early diagnosis of PPHN and treatment with iNO may improve final outcome in neonates with TGA and IVS. In the presence of moderately large atrial communication and PPHN, treatment with iNO might be considered before BAS.