Maternal and neonatal outcomes in COVID-19 infected pregnancies: a prospective cohort study

Background: Despite the large number of pregnant women with the coronavirus disease 2019 (COVID-19), there is not enough analytical study to compare maternal and fetal consequences of COVID-19 infected with non-infected pregnancies. This cohort study aimed to compare maternal and fetal consequences of COVID-19 infected with non-infected pregnancies. Methods: We included pregnant women with and without COVID-19 who were admitted to Arash Hospital in Tehran, Iran, from 1 March to 1 September 2020. Clinical features, treatments, and maternal and fetal outcomes were assessed. Results: A total of 199 women enrolled, including 66 COVID-19 infected and 133 non-infected pregnant women prospectively. Caesarean section was carried out in total 105 women (52.76%). A significant difference was found in term of delivery type between COVID-19 infected and non-infected pregnant women [adjusted risk ratio (aRR): 1.31, 95% confidence interval (CI): 1.04, 1.65, P = 0 .024]. No significant association was found between COVID-19 infection and preterm birth (aRR: 1.16, 95% CI: 0.54, 2.48, P = 0 .689) , low birth weight (aRR: 1.13, 95% CI: 0.55, 2.31, P = 0 .723) , gestational diabetes (aRR: 1.67, 95% CI: 0.81, 3.42, P = 0 .160) , pre-eclampsia (aRR: 2.02, 95% CI: 0.42, 6.78, P = 0 .315) , intrauterine growth restriction (aRR: 0.16, 95% CI: 0.02, 1.86, P = 0 .145) , preterm rupture of membrane (aRR: 0.19, 95% CI: 0.02, 2.20, P = 0 .186) , stillbirth (aRR: 1.41, 95% CI: 0.08, 18.37, P = 0.614) , postpartum haemorrhage (aRR: 1.84, 95% CI: 0.39, 8.63, P = 0 .185), neonatal intensive care unit (ICU) admission (aRR: 1.84, 95% CI: 0.77, 4.39, P = 0.168) and neonatal sepsis (aRR: 0.84, 95% CI: 0.48, 1.48, P = 0.568). The percentage of patients (4/66, 6.06%) being admitted to the ICU was significantly higher than the control group (0%) (P < 0.001). Conclusion: Basically, although pregnancy and neonatal outcomes were not significantly different, the need for ICU care for pregnant women with COVID-19 was significantly higher compared with those without COVID-19.