Acute biliary pancreatitis (ABP) is associated with increased rates of morbidity in pregnancy. Because there is a paucity of population-based studies evaluating ABP in pregnancy, we sought to investigate clinical outcomes in hospitalized pregnant women on a national level.

By using the Nationwide Readmission Database (2011-2014), we identified all women (age ≥18 years) with an index admission for ABP in the United States. Multivariate and propensity-score matched analyses were performed to evaluate the impact of pregnancy on the clinical outcomes of early readmission and severe acute pancreatitis (SAP) in ABP.

There were 7787 hospitalizations for ABP in pregnant women during the study period. The rate of 30-day readmission was 16.26%; 57% of these early readmissions were due to adverse events of ABP. Compared with nonpregnant women with ABP, ERCP (21.1% vs 25.2%; P < .001) and cholecystectomy (52.8% vs 55.2%; P = .02) were performed less frequently during pregnancy. Propensity-score matched analysis revealed an increased risk of 30-day readmissions in pregnancy (odds ratio [OR], 1.96; 95% confidence interval [CI], 1.67-2.30), whereas there was no difference in the risk of SAP (OR, 1.09; 95% CI, 0.76-1.57). Multivariate analysis demonstrated that weekend admission (OR, 1.40; 95% CI, 1.10-1.79) and >1 week of hospitalization (OR, 1.75; 95% CI, 1.24-2.48) increased the risk of 30-day readmission, whereas ERCP (OR, 0.40; 95% CI, 0.27-0.57) and cholecystectomy (OR, 0.13; 95% CI, 0.10-0.18) reduced the odds of early readmission in pregnancy.

Pregnant women with ABP less frequently undergo timely endoscopic biliary decompression and cholecystectomy. These modifiable factors can potentially lower early readmissions in pregnant women.