scholarly journals Impact of COVID-19 Lockdown on Preterm Births, Low Birthweights and Stillbirths: A Retrospective Cohort Study

2021 ◽  
Vol 10 (23) ◽  
pp. 5649
Author(s):  
Charles Garabedian ◽  
Ninon Dupuis ◽  
Christophe Vayssière ◽  
Laurence Bussières ◽  
Yves Ville ◽  
...  
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Pregnancy Outcomes ◽  
Retrospective Cohort ◽  
Low Birthweight ◽  
Perinatal Outcomes ◽  
Preterm Births ◽  
Sufficient Evidence ◽  
Multiple Pregnancies ◽  
Maternity Hospitals

Objective: The effect of lockdowns during the coronavirus (COVID-19) pandemic on pregnancy outcomes remains uncertain. We aimed to evaluate the association between the COVID-19-related lockdown and pregnancy outcomes in maternity hospitals in France. Study design: This was a retrospective cohort study from six tertiary referral hospitals in different regions of France. Three 55-day periods were compared: pre-lockdown from 22 January 2020, lockdown from 17 March 2020, and post-lockdown from 11 May 2020 to 4 July 2020. We included all women who delivered singleton or multiple pregnancies, who delivered at ≥24 weeks of gestation and with birthweights ≥500 g. We documented gestational ages at the delivery of liveborn and stillborn infants (‘stillbirths’). These were categorized as having a very low birthweight (VLBW, <1500 g), or a low birthweight (LBW, <2500 g). Adjustments were made for place of birth, maternal age, parity and diabetes, and hypertensive disorders, as well as for multiple pregnancies. Results: In total, 11,929 women delivered in the six selected centers. This figure is constituted of 4093, 3829, and 4007 deliveries in the pre-lockdown (1), peri-lockdown (2), and post-lockdown (3) periods, respectively. There were no differences in pregnancy outcomes between these three periods. Overall, birth rates <27+6 weeks, between weeks 28+0 and 31+6, and between 32+0 and weeks 36+6 were 1.0%, 1.9%, and 4.4%, respectively. After adjustment, these rates were stable between periods 1 and 2 (adjusted odds ratio, aOR 0.90; 95% confidence interval, CI 0.69–1.19) and between periods 2 and 3 (aOR 1.04; 95% CI 0.80–1.36). Although more VLBW neonates were born during lockdown (3.5% vs. 2.6%, p = 0.03), this difference did not persist after adjustment (aOR 0.84, CI 95% 0.64–1.10). The LBW rates were similar during the three periods at 12.5% overall. The stillbirth rate was unaffected by the lockdown. Conclusion: The pregnancy outcomes (preterm birth, LBW, VLBW, and stillbirth rates) were not modified by the COVID-19 lockdown in our cohort study in France. Considering the discrepancies in results and methodological issues in previous published studies, there is not sufficient evidence to conclude that such lockdowns have any impact on perinatal outcomes.

Is Adherence to the Provisional Institute of Medicine Guidelines of Weight Gain Associated With Better Perinatal Outcomes? A Retrospective Cohort Study of Twin Pregnancies in Southwest China

2021 ◽  
pp. 101053952110260
Author(s):  
Jie Yan ◽  
Li Tang ◽  
Min Xu
Keyword(s):  
Cohort Study ◽  
Weight Gain ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Neonatal Intensive Care ◽  
Low Birthweight ◽  
Perinatal Outcomes ◽  
Institute Of Medicine ◽  
Child Hospital ◽  
Twin Pregnancies

The applicability of the Institute of Medicine (IOM) recommendations of gestational weight gain (GWG) for Chinese twin gestations is uncertain. In this article, we aimed to investigate the associations between GWG among twin gestations, as categorized according to the 2009 IOM guidelines and perinatal outcomes in Chengdu, China. A retrospective cohort study of pregnant women delivering live twins ≥28 weeks at a tertiary maternal and child hospital was conducted. The incidences of perinatal outcomes were compared across 3 groups—that is, women with low, adequate, and excessive GWG. Logistic regression analyses were next performed to confirm the associations while taking into account potential confounders. Results showed that low GWG was associated with a higher risk of preterm birth, low and very low birthweight, neonatal intensive care unit admission, and gestational diabetes, whereas preeclampsia was more frequent among excessive GWG women. In conclusion, adherence to the 2009 IOM guidelines for twin pregnancies are associated with improved perinatal outcomes. This has the potential to improve short- and long-term public health outcomes.

scholarly journals Comparison of adverse perinatal outcomes between Asians and Caucasians: a population-based retrospective cohort study in Ontario

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Na Zeng ◽  
Erica Erwin ◽  
Wendy Wen ◽  
Daniel J. Corsi ◽  
Shi Wu Wen ◽  
...  
Keyword(s):  
Cohort Study ◽  
Birth Weight ◽  
Preterm Birth ◽  
Cesarean Section ◽  
Gestational Age ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Perinatal Outcomes ◽  
Population Based ◽  
Adverse Perinatal Outcomes

Abstract Background Racial disparities in adverse perinatal outcomes have been studied in other countries, but little has been done for the Canadian population. In this study, we sought to examine the disparities in adverse perinatal outcomes between Asians and Caucasians in Ontario, Canada. Methods We conducted a population-based retrospective cohort study that included all Asian and Caucasian women who attended a prenatal screening and resulted in a singleton birth in an Ontario hospital (April 1st, 2015-March 31st, 2017). Generalized estimating equation models were used to estimate the independent adjusted relative risks and adjusted risk difference of adverse perinatal outcomes for Asians compared with Caucasians. Results Among 237,293 eligible women, 31% were Asian and 69% were Caucasian. Asians were at an increased risk of gestational diabetes mellitus, placental previa, early preterm birth (< 32 weeks), preterm birth, emergency cesarean section, 3rd and 4th degree perineal tears, low birth weight (< 2500 g, < 1500 g), small-for-gestational-age (<10th percentile, <3rd percentile), neonatal intensive care unit admission, and hyperbilirubinemia requiring treatment, but had lower risks of preeclampsia, macrosomia (birth weight > 4000 g), large-for-gestational-age neonates, 5-min Apgar score < 7, and arterial cord pH ≤7.1, as compared with Caucasians. No difference in risk of elective cesarean section was observed between Asians and Caucasians. Conclusion There are significant differences in several adverse perinatal outcomes between Asians and Caucasians. These differences should be taken into consideration for clinical practices due to the large Asian population in Canada.

scholarly journals Contraceptive Use and Pregnancy Outcomes among Opioid Drug-Using Women: A Retrospective Cohort Study

PLoS ONE ◽  
2015 ◽  
Vol 10 (3) ◽  
pp. e0116231 ◽  
Author(s):  
Charles S. Cornford ◽  
Helen J. Close ◽  
Roz Bray ◽  
Deborah Beere ◽  
James M. Mason
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Pregnancy Outcomes ◽  
Retrospective Cohort ◽  
Contraceptive Use

Re: Perinatal outcomes after open fetal surgery for myelomeningocele repair: a retrospective cohort study

2018 ◽  
Vol 126 (1) ◽  
pp. 131-132 ◽  
Author(s):  
Antonio Fernandes Moron ◽  
Mauricio Mendes Barbosa ◽  
Herbene José Figuinha Milani ◽  
Stephanno Gomes Sarmento ◽  
Eduardo Felix Martins Santana ◽  
...  
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Fetal Surgery ◽  
Perinatal Outcomes ◽  
Myelomeningocele Repair

scholarly journals Impact of Blood Urea Nitrogen and Creatinine Levels on Maternal and Fetal Outcomes of Pregnancy: a Retrospective Cohort Study

2021 ◽  
Author(s):  
Guifang Deng ◽  
Lanlan Wu ◽  
Yao Liu ◽  
Zengyou Liu ◽  
Hengying Chen ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Cohort Study ◽  
Blood Urea Nitrogen ◽  
Retrospective Cohort Study ◽  
Pregnancy Outcomes ◽  
Retrospective Cohort ◽  
Fetal Outcomes ◽  
Urea Nitrogen ◽  
The Third ◽  
Fourth Quartile

Abstract Background: Blood urea nitrogen (BUN) and creatinine (SCr) are associated with gestational diabetes mellitus (GDM). However, there were limited data in the literature on the influence of BUN and SCr on maternal and fetal outcomes of pregnancy. We aimed to examine the association of BUN and SCr levels during gestation with the risk of selected adverse pregnancy outcomes.Methods: This retrospective cohort study included 1606 singleton mothers aged 22-44 years. Both BUN and SCr levels were collected and measured during the second (16-18th week), third (28-30th week) trimesters of gestation respectively and followed up pregnancy outcomes. Statistical analysis was used multivariate logistic regression. Results: In the multivariate adjusted logistic regression model, the highest level of SCr in the second trimester increased the risk of PROM by 45% (95% CI, 1.01-2.09). In the third trimester of gestation, compared with those in the lowest quartile, BUN levels in the highest quartile decreased the risk of macrosomia and LGA by 60%(95% CI, 0.20-0.78), 66%(95% CI, 0.21,0.55) , respectively, and increased the risk of SGA by 137%(1.06, 5.31), 186%(1.29,6.34) in the third and fourth quartiles, respectively. The adjusted OR (95%CI) for macrosomia in the fourth quartile was 0.46 (0.24, 0.87), for SGA in the third quartiles was 2.36 (1.10, 5.10), and for LGA in the fourth quartile was 0.61 (0.41,0.91) compared with those in the first quartile of SCr levels. The elevated changes of BUN (> 0.64mmol/L) was the risk factor of SGA (OR: 2.11, 95%CI: 1.03,4.32).Conclusion: Higher BUN and SCr levels during the 28-30th week of gestation even those towards the upper limit of the normal range can act as a warning sign of the impending SGA. Elevated changes of BUN and SCr during pregnancy also associated with the lower birth weight.

Pregnancy outcome following bacteriuria in pregnancy and the significance of nitrites in urinalysis – a retrospective cohort study

2019 ◽  
Vol 47 (6) ◽  
pp. 611-618
Author(s):  
Eviatar Naamany ◽  
Irit Ayalon-Dangur ◽  
Eran Hadar ◽  
Iftach Sagy ◽  
Dafna Yahav ◽  
...  
Keyword(s):  
Cohort Study ◽  
Pregnant Women ◽  
Retrospective Cohort Study ◽  
Pregnancy Outcomes ◽  
Retrospective Cohort ◽  
Urine Culture ◽  
Premature Delivery ◽  
Positive Urine Culture ◽  
Positive Urine ◽  
Adverse Pregnancy

Abstract Background The association between bacteriuria and adverse pregnancy outcomes has been extensively described. The current practice of screening all pregnant women for bacteriuria is challenged by recent studies. We aimed to evaluate pregnancy outcomes among women with a positive urine culture, to assess the significance of positive urinary nitrites in this setting. Methods This was a retrospective cohort study at the emergency department (ED) of the Helen Schneider Hospital for Women, Israel, during 2014–2018. This included all gravida women >18 years old within the 20th week of pregnancy or above, admitted to the ED with diverse complains, who had urinalysis collected and subsequently had a positive urine culture. Clinical and obstetric characteristics were stratified by positive vs. negative nitrites in urinalysis. The primary outcome was premature delivery, and the secondary outcomes were a composite outcome of all recorded pregnancy complications and the significance of urinalysis in predicting urinary tract infection (UTI). Results Overall, 874 pregnant women with a positive urine culture were included. Of them, 721 (79%) patients had a negative nitrite in their urine exam (NNU-group) and 153 (21%) had a positive nitrite in their urine exam (PNU-group). Escherichia coli was the most common pathogen, with significantly higher rates of growth in the PNU-group vs. NNU-group [129 (84.3%) vs. 227 (38.4%), P < 0.001]. Premature delivery was recorded with no association of symptomaticity or nitrite status. Among symptomatic women with classic symptoms of UTI, PNU was significantly associated with decreased risk for major peripartum complications [odds ratio (OR) with 95% confidence interval (CI) of 0.22 (0.05–0.94)]. Conclusion Our findings support that PNU among symptomatic pregnant women with UTI-related symptoms was associated with lower risk of developing major adverse obstetrical outcomes.

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