Severe maternal morbidity in twin pregnancies: the impact of body mass index and gestational weight gain.

OBJECTIVES

The objective of this study was to determine whether body mass index (BMI) and gestational weight gain (GWG) are associated with severe maternal morbidity (SMM) in twin gestations.

METHODS

This was a retrospective cohort of all twin pregnancies delivered at seven hospitals in New York from 2019 to 2023. Multivariable logistic regression modeled the probability of SMM as a function of BMI group, adjusting for excessive GWG, race-ethnicity, and obstetric comorbidity index. A total of 1,976 twin gestations were included.

RESULTS

The SMM rate was 14.0 % (n=276).

CONCLUSIONS

Neither pre-pregnancy BMI nor GWG was associated with SMM, both before or after adjustment for covariates.