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Prior international studies have shown mixed results regarding the association of hepatitis B and hepatitis C with adverse pregnancy outcomes. We performed an updated evaluation of the prevalence of associated adverse pregnancy outcomes and evaluated trends over time of diagnosis of chronic hepatitis B (HBV) and chronic hepatitis C (HCV) in pregnant women in a national database. All pregnant women with HBV and HCV were identified from the National Inpatient Sample database 2012 to 2018. Multivariate logistic regression analyses were performed to compare pregnancy‐related complications, including rates of preeclampsia/eclampsia, gestational diabetes, intrauterine growth restriction, antepartum/intrapartum hemorrhage, preterm labor, and Cesarean section. We evaluated all‐cause in‐hospital mortality, length of stay, and total cost of hospitalizations. A total of 28.7 million pregnancy‐related hospitalizations that met our eligibility criteria were identified, including 51,200 with HBV and 131,695 with HCV. In comparison with the uninfected controls, the HBV group was significantly more likely to develop gestational diabetes (12.94% vs. 6.94%,  p  < 0.001). The HCV group was more likely to have preterm labor (9.63% vs. 6.27%,  p  < 0.001), intrauterine growth restriction (6.04% vs. 2.89%,  p  < 0.001), longer length of stay (3.4 days vs. 2.7 days,  p  < 0.001), and higher hospitalization cost (15,052 dollars vs. 14,258 dollars,  p  < 0.001). These findings should inform counseling of women who are found to have HBV or HCV during pregnancy regarding the risk of adverse pregnancy outcomes and support the need for an interdisciplinary approach to optimize maternal and neonatal outcomes.

Hepatitis C is associated with more adverse pregnancy outcomes than hepatitis B: A 7‐year national inpatient sample study