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Acta Obstet Gynecol Scand. 2014 Jan;93(1):109-12. doi: 10.1111/aogs.12258. Epub 2013 Oct 15.

Late preterm birth is associated with short-term morbidity but not with adverse neurodevelopmental and physical outcomes at 1 year.

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University of Exeter Medical School, University of Exeter, Exeter, UK.


We compared the neonatal and infant outcomes at one year (Bayley mental and psychomotor development index, and physical growth) of babies who were (n = 63) or were not (n = 100) delivered prior to 37 weeks in women admitted in threatened late preterm labor (34-35(+6) weeks) with a cervix ≤15 mm. The women were part of a clinical trial to investigate the tocolytic effect of the oxytocin antagonist barusiban. Babies born late preterm (34-36(+6) weeks) had a significantly increased risk of short-term morbidity (hepatobiliary disorders, respiratory disorders, metabolic disorders, nervous system disorders, infection; p < 0.05 for each) compared with those born at term, but there were no significant differences in the neurodevelopmental and physical outcomes at one year (p > 0.05 for both one-year outcomes).


Preterm birth; long-term outcomes; neonatology; short-term outcomes; tocolysis

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