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Title: Early hemodynamic consequences of patent ductus arteriosus in preterm infants with intrauterine growth restriction.
Author: Rakza T, Magnenant E, Klosowski S, Tourneux P, Bachiri A, Storme L.
Journal: J Pediatr; 2007 Dec; 151(6):624-8. PubMed ID: 18035142.
Abstract:
OBJECTIVE: To test the hypothesis that significant patent ductus arteriosus (PDA) may occur very early after birth in preterm infants with intrauterine growth restriction (IUGR), we compared the longitudinal changes in left-to-right shunting through DA between eutrophic and preterm infants with IUGR. STUDY DESIGN: The preterm infants -26 to 32 weeks gestational age (GA), admitted in our neonatal intensive care unit from February to May 2004 were included. They were separated into an "IUGR of placental origin" group and an "eutrophic" group. Significant PDA was assessed by Doppler echocardiography at 6, 24, and 48 hours of age. RESULTS: Thirty-one eutrophic (GA = 29 +/- 1.4 weeks; birth weight [BW] = 1300 +/- 160 g) and 17 infants with IUGR (GA = 29.3 +/- 1.5 weeks; BW = 810 +/- 140 g) were studied. Six hours after birth, the rate of significant PDA was higher in the IUGR than in the eutrophic group (10/17 [60%] vs 5/31 [15%]; P < .05). More DA became significant in infants with IUGR (11/17 [65%]) than in eutrophic infants (12/31 [40%]) (P < .05) within the 48 hours after birth. CONCLUSION: Markers of high pulmonary blood flow and systemic vascular steal occur more frequently and earlier after birth in IUGR of placental origin than in eutrophic preterm infants. The management of preterm infants with severe IUGR of placenta origin should include early echocardiographic monitoring to assess for markers of significant PDA.

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