Postpartum Acute Care Utilization in a Health Care System in the Southeastern United States.

Introduction: Postpartum acute care utilization (PACU), including visits to an emergency department, obstetric triage, or urgent care ("outpatient"), and hospital readmissions, may indicate medical complications and signal unmet health needs. Methods: We estimated the incidence of PACU and examined patterns by sociodemographic factors, pregnancy and birth characteristics, time since discharge from the birth hospitalization, and medical indications. We constructed a retrospective cohort of people aged ≥18 years who delivered ≥1 liveborn infant >20 weeks of gestation from July 1, 2021, to December 31, 2022, using electronic health record data from a quaternary maternity hospital in the Southeastern United States PACU data throughout the health care system were collected through March 31, 2023. We excluded people with a hospital stay >6 days (n = 29). Results: In this cohort of 6,041 birthing people, 11.3% had ≥1 outpatient encounters (range 0-6) and 3.2% had ≥1 hospital readmissions (range 0-4) within 12 weeks of discharge from the birth hospitalization. Median time to first outpatient PACU was 10 days post-discharge and 6 days for first hospital readmission. Among encounters for the top five medical indications, time to first postpartum acute care encounter varied by medical indication (log-rank test of equality over strata Chi-square = 69.93, degrees of freedom = 4, p < 0.0001). Complications specified during the puerperium (n = 234) and hypertension and hypertensive-related conditions complicating the puerperium (n = 87) were the two most frequent indications. Conclusion: These findings can inform efforts to direct health resources to improve postpartum health care and health outcomes.