The frequency of prior antenatal corticosteroid therapy in late preterm birth pregnancies

Carlos A. Carreno, Jerrie S. Refuerzo, Marium G. Holland, Susan M. Ramin, George Saade, Sean C. Blackwell

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We sought to quantify how often women with late preterm birth (LPTB) receive antenatal corticosteroid (ACS) therapy prior to 34 weeks and to determine its effects on neonatal respiratory morbidity. LPTBs (34 0/to 36 6/weeks) over a 1-year period at a single tertiary care hospital were studied. A composite neonatal respiratory outcome was defined as mechanical ventilation, continuous positive airway pressure with fraction of inspired oxygen (FIO >40% for >2 hours or FIO>40% for >4 hours within the first 72 hours of life. Multivariate logistic regression analysis was used to evaluate the association between ACS therapy and neonatal respiratory morbidity. Over the study period, 503 LPTBs met the study criteria and 6.8% (n=34) had ACS therapy <34 weeks. Most had exposure >7 days prior to delivery (64.7%). Almost one-half of those receiving prior ACS therapy delivered between 34 and 35 weeks. There was no difference in the rate of prior ACS therapy based on LPTB indication for delivery. After adjusting for confounding factors, prior ACS therapy was not associated with lower respiratory morbidity (odds ratio [OR] 2.0, 95% confidence interval [CI] 0.2 to 16.3, p=0.53). Advancing gestational age was the only variable associated with respiratory morbidity (OR 0.50, 95% CI 0.26 to.94, p=0.03). In our population, prior ACS therapy was infrequent and was not associated with improvements in neonatal respiratory morbidity following LPTB.

Original languageEnglish (US)
Pages (from-to)767-771
Number of pages5
JournalAmerican Journal of Perinatology
Volume28
Issue number10
DOIs
StatePublished - 2011

Fingerprint

Premature Birth
Adrenal Cortex Hormones
Pregnancy
Morbidity
Therapeutics
Odds Ratio
Confidence Intervals
Respiratory Therapy
Continuous Positive Airway Pressure
Tertiary Healthcare
Artificial Respiration
Tertiary Care Centers
Gestational Age
Logistic Models
Regression Analysis
Oxygen
Population

Keywords

  • antenatal corticosteroids
  • corticosteroids
  • Late preterm birth
  • neonatal respiratory morbidity
  • preterm birth

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

Cite this

The frequency of prior antenatal corticosteroid therapy in late preterm birth pregnancies. / Carreno, Carlos A.; Refuerzo, Jerrie S.; Holland, Marium G.; Ramin, Susan M.; Saade, George; Blackwell, Sean C.

In: American Journal of Perinatology, Vol. 28, No. 10, 2011, p. 767-771.

Research output: Contribution to journalArticle

Carreno, Carlos A. ; Refuerzo, Jerrie S. ; Holland, Marium G. ; Ramin, Susan M. ; Saade, George ; Blackwell, Sean C. / The frequency of prior antenatal corticosteroid therapy in late preterm birth pregnancies. In: American Journal of Perinatology. 2011 ; Vol. 28, No. 10. pp. 767-771.
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