Relationship between coronavirus disease 2019 in pregnancy and maternal and fetal outcomes: Retrospective analytical cohort study.

Objective: Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has caused many deaths and complications worldwide. However, limited data are available about COVID-19 during pregnancy. This study aimed to assess the epidemiological and clinical features of COVID-19, and the adverse maternal and fetal outcomes.

Design: This retrospective analytical cohort study was conducted on all pregnant women with confirmed COVID-19 at Nekouei-Hedayati-Forghani Hospital in Qom, Iran from 15 March 2020 to 15 November 2020. For the same period, 165 pregnant women who did not have COVID-19 were selected at random and included in this study. All epidemiological and clinical features were collected from the medical records of the participants. A logistic regression model was used to determine associations between COVID-19 in pregnancy and maternal and fetal outcomes.

Findings: The most common symptoms reported by pregnant women with COVID-19 were shortness of breath (60.9%), dry cough (59%) and fever (42.9%). After adjustment for potential confounding factors, COVID-19 in pregnancy was associated with a significantly higher risk of admission to the intensive care unit (ICU) [odds ratio (OR) 6.16, 95% confidence interval (CI) 1.23-31], caesarean section (OR 0.45, 95 CI 0.25-1.03), preterm birth (OR 3.01, 95% CI 1.4-6.54), fetal distress (OR 5.7, 95% CI 2.13-15.59) and admission to the neonatal intensive care unit (NICU) (OR 3.04, 95% CI 1.21-7.70).

Key Conclusions: COVID-19 is associated with adverse maternal and fetal outcomes, including ICU admission, caesarean section, fetal distress, preterm birth and NICU admission.