title: [Association between maternal pre-pregnancy body mass index and adverse outcomes of late preterm infants].
abstract: OBJECTIVE
  To study the association between maternal pre-pregnancy body mass index (BMI) and adverse outcomes of late preterm infants (LPI).
  
  
  METHODS
  A total of 367 LPI who were born from January 2011 to December 2015 and admitted to the neonatal ward were enrolled. The BMI criteria for Chinese population were used to analyze the factors for maternal pre-pregnancy BMI and its association with adverse outcomes of LPI (1 minute Apgar score ≤7, delivery room resuscitation, hospitalization days after birth >7 days, and ventilation duration ≥6 hours).
  
  
  RESULTS
  Of all LPIs, there were 64 LPI (17.4%) in the low maternal pre-pregnancy BMI group, 243 LPI (66.2%) in the normal maternal pre-pregnancy BMI group, and 60 LPI (16.4%) in the high maternal pre-pregnancy BMI group. Low pre-pregnancy BMI was the risk factor for 1 minute Apgar score ≤7 (OR=3.243, 95% CI: 1.102-9.546) and need for delivery room resuscitation (OR=3.492, 95%CI: 1.090-11.190), and high pre-pregnancy BMI was the risk factor for hospitalization days after birth >7 days (OR=1.992, 95%CI: 1.024-3.874).
  
  
  CONCLUSIONS
  Abnormal maternal pre-pregnancy BMI has adverse effects on the outcomes of LPI. In order to reduce these adverse outcomes BMI should be controlled within the normal range in pregnant women.
authors.affiliation: Department of Pediatrics, Third Affiliated Hospital of Anhui Medical University, Hefei 230000, China. wenxiaohong2007@163.com.
authors.forename: Zhi-Xuan
authors.initials: ZX
authors.lastname: Yuan
authors.forename: Xiao-Hong
authors.initials: XH
authors.lastname: Wen
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Huang
authors.forename: Quan
authors.initials: Q
authors.lastname: Liu
authors.forename: Hui-Zhi
authors.initials: HZ
authors.lastname: Huang
authors.forename: Mei
authors.initials: M
authors.lastname: Yu
authors.forename: Li
authors.initials: L
authors.lastname: Ma
mesh_terms: D000328:Adult; D001034:Apgar Score; D015992:Body Mass Index; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D011247:Pregnancy; D011248:Pregnancy Complications; D012307:Risk Factors