The effect of plurality and obesity on betamethasone concentrations in women at risk for preterm delivery

Cynthia Gyamfi, Lisa Mele, Ronald J. Wapner, Catherine Y. Spong, Alan Peaceman, Yoram Sorokin, Donald J. Dudley, Francee Johnson, Kenneth J. Leveno, Steve N. Caritis, Brian M. Mercer, John M. Thorp, Mary J. O'Sullivan, Susan M. Ramin, Marshall Carpenter, Dwight J. Rouse, Menachem Miodovnik, Baha Sibai

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Objective: Antenatal corticosteroids (ACS) decrease respiratory distress syndrome in singleton gestations. Twin data are less clear. Obesity and body mass index (BMI) also affect medication distribution volume. We evaluated whether maternal or neonatal cord betamethasone concentrations differed in twin gestations or obese patients. Study Design: Participants receiving betamethasone in a randomized controlled trial of weekly ACS were identified. We analyzed maternal delivery and cord serum betamethasone concentrations comparing singletons with twins and obese (BMI ≥30 kg/m2) with nonobese women. Results: Fifty-five maternal and 45 cord blood samples were available. Unadjusted median maternal serum concentrations appeared paradoxically higher in both twin gestations and the obese. However, after controlling for confounders, there were no differences in betamethasone concentrations in maternal serum or cord blood between singletons and twins (P = .61 vs P = .14) or nonobese and obese women (P = .67 vs .12). Conclusion: Maternal and umbilical cord blood serum betamethasone concentrations are not different in twin gestations or obese women.

Original languageEnglish
JournalAmerican Journal of Obstetrics and Gynecology
Volume203
Issue number3
DOIs
StatePublished - Sep 1 2010
Externally publishedYes

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Betamethasone
Obesity
Mothers
Fetal Blood
Pregnancy
Serum
Adrenal Cortex Hormones
Body Mass Index
Randomized Controlled Trials

Keywords

  • betamethasone concentration
  • obesity
  • twins

ASJC Scopus subject areas

  • Obstetrics and Gynecology

Cite this

The effect of plurality and obesity on betamethasone concentrations in women at risk for preterm delivery. / Gyamfi, Cynthia; Mele, Lisa; Wapner, Ronald J.; Spong, Catherine Y.; Peaceman, Alan; Sorokin, Yoram; Dudley, Donald J.; Johnson, Francee; Leveno, Kenneth J.; Caritis, Steve N.; Mercer, Brian M.; Thorp, John M.; O'Sullivan, Mary J.; Ramin, Susan M.; Carpenter, Marshall; Rouse, Dwight J.; Miodovnik, Menachem; Sibai, Baha.

In: American Journal of Obstetrics and Gynecology, Vol. 203, No. 3, 01.09.2010.

Research output: Contribution to journalArticle

Gyamfi, C, Mele, L, Wapner, RJ, Spong, CY, Peaceman, A, Sorokin, Y, Dudley, DJ, Johnson, F, Leveno, KJ, Caritis, SN, Mercer, BM, Thorp, JM, O'Sullivan, MJ, Ramin, SM, Carpenter, M, Rouse, DJ, Miodovnik, M & Sibai, B 2010, 'The effect of plurality and obesity on betamethasone concentrations in women at risk for preterm delivery', American Journal of Obstetrics and Gynecology, vol. 203, no. 3. https://doi.org/10.1016/j.ajog.2010.04.047
Gyamfi, Cynthia ; Mele, Lisa ; Wapner, Ronald J. ; Spong, Catherine Y. ; Peaceman, Alan ; Sorokin, Yoram ; Dudley, Donald J. ; Johnson, Francee ; Leveno, Kenneth J. ; Caritis, Steve N. ; Mercer, Brian M. ; Thorp, John M. ; O'Sullivan, Mary J. ; Ramin, Susan M. ; Carpenter, Marshall ; Rouse, Dwight J. ; Miodovnik, Menachem ; Sibai, Baha. / The effect of plurality and obesity on betamethasone concentrations in women at risk for preterm delivery. In: American Journal of Obstetrics and Gynecology. 2010 ; Vol. 203, No. 3.
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