Do neonatal birth weight thresholds for labor dystocia outcomes differ between short and normal stature women?

Gal Cohen*, Hanoch Schreiber, Hila Shalev-Ram, Tal Biron-Shental, Michal Kovo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To determine if there is a correlation between maternal short stature and neonatal birth weight among women with adverse outcomes related to labor dystocia. Methods: The medical records of singleton deliveries with adverse obstetric outcomes related to labor dystocia during 2014–2020, in a single tertiary center, were reviewed. Outcomes included at least one of the following: cesarean delivery (CD) due to cephalopelvic disproportion (CPD), prolonged second stage, shoulder dystocia, third- or fourth-degree perineal tear. Maternal short stature was defined as height below the 10th centile (short stature group) and normal stature was defined as maternal height between the 10th and 90th centiles (normal stature group). Maternal and neonatal characteristics were compared between the groups. Results: A total of 3295 women were included, among them, 307 in the short stature group (9.3%, height 1.52 ± 0.02 m) and 2988 in the normal stature group (90.7%, height 1.63 ± 0.04 m). Evaluating the entire cohort revealed similar neonatal birth weights comparing the short and normal stature groups. A subgroup analysis of women after CD due to CPD (n = 296) revealed lower neonatal birth weights in the short stature group (n = 31) compared with the normal stature group (n = 265) (3215 ± 411 vs 3484 ± 427 g, P = 0.001, respectively). Multivariable linear regression was performed for women who underwent CD due to CPD. After adjusting for obesity and diabetes mellitus, short stature and nulliparity were found to be independently associated with decreased neonatal birth weight (266 g less for short stature, P = 0.001, and 294 g less for nulliparity, P = 0.001). Conclusions: Among women with short stature, CD due to CPD occurs at lower neonatal birth weights.

Original languageEnglish
JournalInternational Journal of Gynecology and Obstetrics
DOIs
StateAccepted/In press - 2023

Keywords

  • cephalopelvic disproportion
  • cephalopelvic disproportion and maternal height
  • cephalopelvic disproportion in short women
  • correlation between maternal height and neonatal birth weight in cesarean deliveries
  • correlation between maternal height and neonatal birth weight in labor dystocia
  • dystocia and maternal height
  • short stature and cephalopelvic disproportion
  • short stature and labor dystocia

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