COVID-19 in pregnancy may significantly affect fetal growth

Objective. Whilst most cases of COVID-19 in pregnancy evolve uneventfully, some others have a poor outcome, such as preterm birth and HDP. The effect of COVID-19 on fetal growth still has to be addressed and appears controversial. Our study aims to focus on fetal growth velocity across the trimesters in pregnancy affected with COVID-19. Materials and Methods. This is a multicentric prospective observational study on data from COVID-19 pregnancies referred to the centers of Careggi University Hospital and S. Stefano Hospital in Prato from 2020 to 2022, included in the local branch of ItOSS surveillance. Fetal growth was evaluated across the three trimesters of pregnancy by abdominal circumference (AC) and expected fetal weight (EFW). Both AC, and EFW plus birthweight were used to calculate growth velocity (Vannuccini et al., 2017). Results. Data from a cohort of 211 cases was collected. The majority (80%) of COVID-19 cases occurred in the third trimester. Of note, the percentage of gestational diabetes (12.3%) and preterm births (7.1%) was comparable to the general population. Mean birthweight was 3259 +/- 509 g. The percentage of cesarean sections was acceptable (13.7%). Concerning the velocity of growth, AC decreased from the second to third trimester to reach values < 10th centile in 24% of cases and < 5th percentile in 17% of cases, even in presence of 2% of hypertensive disorders (HDP). Fetal growth restriction according to Gordjin et al. (2015) was antenatally identified in 4.7% of cases. Fetal growth > 95th centile occurred in 5.7% of cases. At birth, the cumulative percentage of small for gestational age newborns defined as birth weight < 2500 g resulted 5.2%. A significant percentage of newborns required NICU assistance (7.8%). Conclusions. Regardless of the association and prevalence of preterm birth, SGA and HDP in pregnant women, fetal growth appears to be affected by COVID-19 with a higher incidence of impaired growth velocity compared to the general population.

Third level care experience during SARS-CoV-2 pandemic

Objective. As the SARS-CoV-2 Pandemic has widely changed pregnancy experience and assessment, the inpatient and outpatient services have had to be re-organized. Since March 2020, Careggi University Hospital (CUH) has provided a dedicated COVID-pathway: spaces for women with unknown swab status and a COVID-19 ward delivery room. The aim of this study is to analyze the inpatient and outpatient COVID-19 related activities in CUH. Materials and Methods. We prospectively collected data from consecutive COVID-19 pregnancies referred from 2020 to 2022, included in the local branch of the ItOSS surveillance. All patients experienced COVID-19 in pregnancy at various stages of severity and gestational ages. Results. From March 2020 to June 2022, 165 COVID-19 deliveries occurred (169 newborns), while 16 pregnant positive women were admitted without delivering. A single emergency C-section (CS) was performed because of Sars-CoV-2 related ARDS, 15 women experienced serious maternal morbidity and 5 needed ECMO. A single maternal death occurred four months after delivery (C-section). Considering ECMO supported cases during pregnancy or postpartum, the first one tested positive for COVID-19 during the second trimester. She developed ARDS and required ECMO for 38 days. She was discharged in good general conditions and a CS at term was performed following obstetric indication. The second patient developed COVID-19-related ARDS at 28 weeks of gestation and experienced a precipitous vaginal delivery at 31 weeks+6 days of gestation while on ECMO. She was discharged 1 month later in good general conditions. The third patient was an obese (BMI 38) 43-year-old woman who had performed an IVF with embryo donation;she tested positive at 38 weeks+2 days of gestation. A CS was performed because of the worsening of her condition. After the delivery she was admitted in ICU and she underwent ECMO. She died 143 days after the CS by sepsis and multiple organ failure (MOF). For all these pregnancies neonatal outcomes were positive. No perinatal death occurred and only one baby tested positive for SARS-CoV-2 infection at nasal swab sampling (case 3). The anesthesiology team performed neuroassial analgesia intrapartum in all the positive women who needed/requested it. Monoclonal Antibodies (mAbs) have been widely used to treat mild to moderate COVID-19 outpatients (NIH and RCOG recommendations) at risk for developing severe disease. Regarding this specifical therapy, an essential role in the management of the pregnant outpatient was played by the Infectious Disease Department. All patients above 28 weeks requiring hospitalization received LMWH prophylaxis, which was administrated under 28 weeks only in presence of additional risk factors (obesity, IVF, etc.). All new mothers received a ten days LMWH prophylaxis. On the outpatient side, we performed 22 teleconsultations, 43 obstetric ultrasounds (including I trimester screening), 90 obstetric checks with clinical evaluation and home therapy management, 32 fetal monitoring and 47 naso-pharingeal swabs. Conclusions. At Careggi Hospital Maternal Department an extensive re-organization of inpatient and outpatient services has been performed in order to guarantee good practice and management of all pregnant women during the SARS-CoV-2 pandemic. This was only possible thanks to a wide multidisciplinary group which enhanced every professional.

Fetal growth in covid pregnancy: Better than expected?

INTRODUCTION The COVID pandemic has widely affected the pregnancy experience, being a novel risk factor for maternalfetal morbidity/mortality, preterm birth and, as recently hypothesized, preeclampsia. The aim of our study was to investigate the impact of COVID in pregnancy on fetal growth. METHODS Data from ultrasound reports of 73 consecutive pregnancies enrolled in the local ItOSS surveillance on COVID and pregnancy were analyzed. All patients had experienced COVID in pregnancy at various stages of severity. Eight cases were excluded as they did not fit the aim of the study. Fetal abdominal circumference (AC) in 2nd and 3rd trimester were compared for each case, and then with the neonatal birthweight, in order to clarify the possible presence of growth defects/accelerations. RESULTS No case of AC <10° centile was reported neither in the 2nd nor in the 3rd trimester. Interestingly, the percentage of SGA at birth was 5.6%. The same percentage of neonates had pH <7.10 at birth. Only one case presented an AC drop >40 centiles. LGA neonates, with AC >90° centile, accounted for 22.5%, including 8.4% of cases that presented an acceleration of growth velocity from 2nd to 3rd trimester. During the 3rd trimester to birth interval, we observed 8.4% of decrease and 2.8% increase of growth velocity, respectively, in terms of percentiles of expected birthweight vs neonatal birthweight. CONCLUSIONS Data about fetal growth in COVID pregnancies are overall encouraging. No case of defined FGR was observed. Conversely, acceleration of growth from 2nd to 3rd trimester was higher than expected. This may be accountable on poor metabolic status due to the prolonged use of corticosteroids or on lack of regular glycemic screening/nutrition due to pandemic.