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. 1978 Jul;93(1):110-3.
doi: 10.1016/s0022-3476(78)80617-9.

The silent ductus arteriosus

The silent ductus arteriosus

R L McGrath et al. J Pediatr. 1978 Jul.

Abstract

Preterm infants at risk of developing a patent ductus arteriosus were followed sequentially by physical examination, echocardiographic determinations of the LA/AO ratio, and chest roentgenograms. The results show that a significant number of infants who have no clinical signs or symptoms of a PDA have large left-to-right shunts. The presence of this shunt was suggested by acute increase in left atrial size by ECHO determination and confirmed by retrograde single-film aortography. Clinical signs and symptoms often developed several days after documentation of the left-to-right shunt.

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