Association between Prenatal One-Hour Glucose Challenge Test Values and Delivery Mode in Nondiabetic,Pregnant Black Women

Objective. we examined the association between 1-hour glucose challenge test (gct) values and risk of caesarean section. study design. a prospective cohort study recruited 203 pregnant black women to participate. at 28 weeks of gestation,participants underwent a routine 1-hour 50 g gct to screen for gestational diabetes mellitus. logistic regression was used to examine the association between 1-hour gct value and delivery mode. results. of the 158 participants included,53 (33.5%) delivered via c-section; the majority (n=29; 54.7%) were nulliparous. mean 1-hour gct values were slightly,but not significantly,higher among women delivering via c-section; versus vaginally (107.8 ± 20.7 versus 102.4 ± 21.5 mg/dl,resp.; p=0.13). after stratifying by parity and adjusting for maternal age,previous c-section,and prepregnancy body mass index,1-hour gct value was significantly associated with increased risk of c-section among parous women (or per 1 mg/dl increase in gct value = 1.05; 95% ci or: 1.00,1.05; p=0.045). conclusion. even slightly elevated 1-hour 50 g gct values may be associated with delivery mode among parous black women. © 2015 jerel m. ezell et al.