Objective: To compare neonatal outcomes of twin pregnancies with gestational diabetes (GDM) and preexisting diabetes with non-diabetic twin pregnancies.
Study design: US birth data from 2006 to 2009 was used to compare twin pregnancies of 16 562 GDM and 2137 preexisting diabetic with 258 857 non-diabetic twin gestations. Adjusted odds ratios (aORs) were calculated to assess effects of GDM and preexisting diabetes on neonatal outcomes.
Result: Twin pregnancies with GDM vs non-diabetic twin pregnancies demonstrated decreased 5-min Apgar scores <4 (aOR 0.8, 95% confidence interval (CI) 0.68-0.94), fewer births before 32 weeks gestation (aOR 0.72, 95% CI 0.68-0.76), decreased birth weight less than the tenth percentile (aOR 0.84, 95% CI 0.81-0.89) and fifth percentile (aOR 0.85, 95% CI 0.81-0.89) and a trend toward lower rates of neonatal death (aOR 0.84, 95% CI 0.68-1.02).
Conclusion: Certain adverse outcomes in pregnancies with GDM may be attenuated in twin gestations; however, further investigation is warranted.