Birth Weight Independently Affects Morbidity and Mortality of Extremely Preterm Neonates

Apostolos Mamopoulos, Stamatios Petousis, John Tsimpanakos, Sophia Masouridou, Kelly Kountourelli, Chrysoula Margioula-Siarkou, Maria Papouli, David Rousso

Abstract


Background: Neonates born between 24 + 0 and 27 + 6 gestational weeks, widely known as extremely preterm neonates, present a category characterized by increased neonatal mortality and morbidity. Main objective of the present study is to analyze the effect of various epidemiological and pregnancy-related parameters on unfavorable neonatal mortality and morbidity outcomes.

Methods: A retrospective study was performed enrolling cases delivered during 2003 - 2008 in our department. Cases of neonatal death as well as pathological Apgar score (≤ 4 in the first and ≤ 7 in the fifth minute of life), need for emergency resuscitation, respiratory disease syndrome (RDS), neonatal asphyxia, intraventricular hemorrhage (IVH) and neonatal death were recorded for neonates of our analysis. A multivariate regression model was used to correlate these outcomes with gestational week at delivery, maternal age, parity, kind of gestation (singleton or multiple), intrauterine growth restriction (IUGR), birth weight (BW), preterm premature rupture of membranes (PPROM), mode of delivery (vaginal delivery or cesarean section) and antenatal use of corticosteroids.

Results: Out of 5,070 pregnancies delivered, 57 extremely preterm neonates were born (1.1%). Mean BW was 780.35 ± 176.0, RDS was observed in 93.0% (n = 53), resuscitation was needed in 54.4% (n = 31) while overall mortality rate was 52.6% (n = 30). BW was independently associated with neonatal death (P = 0.004), pathological Apgar score in the first (P = 0.05) and fifth minute of life (P = 0.04) as well as neonatal sepsis (P = 0.05).

Conclusion: BW at delivery is independently affecting neonatal mortality and morbidity parameters in extremely preterm neonates.




J Clin Med Res. 2015;7(7):511-516
doi: http://dx.doi.org/10.14740/jocmr2075w


Keywords


Extremely preterm; Neonatal morbidity; Neonatal mortality; Birth weight; Gestational age

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