Worse outcomes of pregnancy in COVID-19 infection during parturition may be due to referral bias: analysis in a prospective cohort of 963 pregnancies

Poorer Obstetrics Outcomes During the Second Wave of COVID-19 in India

Introduction

Outcomes of pregnancy in COVID 19-infected mothers are worse than in the general population. Due to immunological changes, antenatal women are more vulnerable to severe complications. The India has experienced two waves of the disease. We analysed whether the second wave of the disease had affected pregnancy outcomes differently by comparing pregnancy outcomes with those of the first wave.

Materials and Method

The study population included all the women delivered in the same tertiary centre during both the waves. Maternal outcome parameters include maternal oxygen requirement, maternal ICU admission and maternal death. Foetal outcome parameters include APGAR scores, preterm deliveries and NICU admissions, maternal and foetal outcome parameters between the first and the second waves were compared.

Results

Demographic parameters were similar in both the waves of COVID 19. No significant differences were found in pre-pregnancy comorbidities, high-risk pregnancies and mode of deliveries between the two waves. Maternal oxygen requirement increased in the second wave [first wave 6(4.7%) vs second wave 25(40.3%) (p-value < 0.001)]. There was also a significant increase in ICU admission [4(3.1%) vs 8(12.9%)], which was in positive correlation with maternal oxygen requirement during the second wave (r = 0.81, p < 0.001). However, there was no significant difference in maternal death [2(1.6%) vs 2(3.2%)]. No significant change noted in neonatal outcomes except for an increase in neonatal sepsis [0 vs 5(8.1%)].

Conclusion

Mothers had more severe diseases during the second wave. But this did not translate into significant increase in maternal mortality and poor neonatal outcomes, possibly due to better preparedness.