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[Confounding effect of prematurity in the neonatal death associated with obstetric maternal morbidity]

Lorenzo Osorno Covarrubias1, Carolina Watty Cáceres, Felipe Alonzo Vázquez

  • 1Departamento Clínico de Neonatología, Hospital de Ginecopediatría, Centro Médico Nacional Ignacio García Teĺlez de Mérida, Yucatań, Meéxico. osornol@prodigy.net.mx

Ginecologia Y Obstetricia De Mexico
|August 18, 2009
PubMed

Insights

Prematurity is the primary driver of neonatal mortality, not prenatal care or delivery method. Prolonged rupture of membranes significantly increases preterm infant mortality risk.

Area of Science:

  • Obstetrics and Gynecology
  • Neonatal Medicine
  • Public Health

Background:

  • Prematurity is the leading cause of neonatal mortality in developed nations, accounting for 60-80% of cases.
  • Understanding factors contributing to neonatal death is crucial for improving infant survival rates.

Purpose of the Study:

  • To investigate the association between obstetric morbidity, prematurity, and neonatal mortality.
  • To identify specific risk factors contributing to adverse neonatal outcomes.

Main Methods:

  • A large cohort study of 25,365 live newborns from 2000-2004.
  • Analysis compared neonatal mortality based on prenatal visit frequency, pregnancy type, preeclampsia/eclampsia, delivery mode, and membrane rupture duration.
  • Stratification by gestational age and statistical analysis using Chi-square and Odds Ratio (OR) with 95% Confidence Intervals (CI).

Main Results:

  • No significant difference in neonatal mortality was found related to the number of prenatal visits, single vs. multifetal pregnancy, or presence of preeclampsia/eclampsia when stratified by gestational age.
  • Neonatal mortality did not differ between vaginal and cesarean deliveries after controlling for gestational age, malformations, and maternal-fetal/obstetrical morbidity.
  • An increased risk of neonatal mortality was observed in preterm neonates with membrane rupture lasting 48 hours or more (OR 3.05, CI 95% 1.64-5.66).

Conclusions:

  • Prematurity, not prenatal visit frequency, multifetal pregnancy, preeclampsia/eclampsia, or cesarean section, was significantly associated with neonatal mortality.
  • The duration of membrane rupture is an independent risk factor for neonatal mortality in preterm infants.
Abstract

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