The Impact of the COVID-19 Pandemic on Postpartum Readmission Rates at a Single Tertiary Care Center in New York City.

Objective: The aim of this study was to mitigate transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and decrease exposure to the hospital setting, Mount Sinai Hospital implemented new protocols, including early postpartum discharge. Early discharge would allow for more single-bedded rooms, limiting exposure to other patients and their support persons. During the pandemic, patients were discharged to home on postpartum day 1 or 2 after vaginal or cesarean delivery, respectively, instead of day 2 or 3, unless longer hospitalization was needed for medical indications. We aim to determine if the readmission rate was increased in the setting of earlier discharge during the coronavirus disease 2019 (COVID-19) pandemic.

Study Design: Historical cohort study comparing the readmission rate in SARS-CoV-2 negative women who presented to Mount Sinai Hospital for delivery admission from March to May 2019 versus March to May 2020. The primary outcome was readmission rate within 6 weeks of discharge day. Maternal and neonatal characteristics and outcomes were compared between groups using -tests or Wilcoxon's rank-sum test for continuous measures and chi-squared or Fisher's exact tests for categorical measures, as appropriate. Primary and secondary outcomes were assessed using linear and logistic univariable and multivariable regression.

Results: Patients in the 2020 cohort ( = 1,078) were significantly less likely to have public/state insurance ( = 0.02), more likely to have pregestational diabetes ( = 0.02), gestational diabetes ( = 0.04), gestational hypertension ( < 0.01), and an operative vaginal or cesarean delivery (vs. spontaneous vaginal delivery,  = 0.01) compared with 2019 cohort patients ( = 1,910). Patients in the 2020 cohort were significantly more likely to have an earlier postpartum day of discharge and a shorter median length of stay compared with 2019 cohort patients (both  < 0.01). Despite differences in length of stay, the rate of readmission was similar between the two groups ( = 0.45).

Conclusion: During the COVID-19 pandemic, there was no difference in readmission rate despite shorter hospital stays.

Key Points: · Maternal length of stay during COVID-19 was shorter.. · Earlier maternal discharge occurred during COVID-19.. · Shorter maternal postpartum stay did not increase readmission rate..