Recurrence risk of low Apgar score among term singletons: A population-based cohort study

Sabine Ensing, Jelle M. Schaaf, Ameen Abu-Hanna, Ben W J Mol, Anita C J Ravelli

Research output: Contribution to journalArticle

Abstract

Objective To examine the risk of recurrence of low Apgar score in a subsequent term singleton pregnancy. Design Population-based cohort study. Setting The Netherlands. Population A total of 190 725 women with two subsequent singleton term live births between 1999 and 2007. Methods We calculated the recurrence risk of low Apgar score after adjustment for possible confounders. Women with an elective cesarean delivery, fetus in breech presentation or a fetus with congenital anomalies were excluded. Results were reported separately for women with a vaginal delivery or a cesarean delivery at first pregnancy. Main outcome measures Prevalence of birth asphyxia, a 5-min Apgar score <7. Results The risk for an Apgar score of <7 in the first pregnancy was 0.99% and overall halved in the subsequent pregnancies (0.50%). For those with asphyxia in the first pregnancy, the risk of recurrence of a low Apgar score in the subsequent pregnancy was 1.1% (odds ratio 2.1, 95% confidence interval 1.4-3.3). This recurrence risk was present in women with a previous vaginal delivery (odds ratio 2.1, 95% confidence interval 1.2-3.5) and in women with a previous cesarean delivery (odds ratio 3.8, 95% confidence interval 1.7-8.5). Among women with a small-for-gestational-age infant in the subsequent pregnancy and a previous vaginal delivery, the recurrence risk was 4.8% (adjusted odds ratio 5.8, 95% confidence interval 2.0-16.5). Conclusion Women with birth asphyxia of the first born have twice the risk of renewed asphyxia at the next birth compared to women without birth asphyxia of the first born. This should be incorporated in the risk assessment of pregnant women.

LanguageEnglish
Pages897-904
Number of pages8
JournalActa obstetricia et gynecologica Scandinavica
Volume93
Issue number9
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Birth asphyxia
  • cesarean section
  • low Apgar score
  • recurrence risk
  • subsequent delivery
  • vaginal delivery

ASJC Scopus subject areas

  • Obstetrics and Gynaecology

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