Planning for a cohort study to investigate the impact and management of influenza in pregnancy in a future pandemic

BackgroundEvidence from the 2009 A/H1N1 influenza pandemic demonstrated that pregnant women are particularly vulnerable to infection and at an increased risk of death. Active data collection through the UK Obstetric Surveillance System (UKOSS) about women admitted to hospital during the 2009 A/H1N1 pandemic was used to inform ongoing clinical guidance regarding the use of antiviral treatment for pregnant women and demonstrated that, in addition to an increased risk of maternal morbidity, influenza infection in pregnancy is associated with poor perinatal outcomes, including an increased risk of stillbirth and preterm birth. This evidence influenced the decision to offer routine influenza immunisation to pregnant women. Even in a non-epidemic period, pregnant women continue to die from influenza.ObjectiveTo establish, and then to put into hibernation, the study mechanisms needed to mount a rapid investigation of the impact of pandemic influenza in pregnancy in the event of a newly emerging pandemic strain.DesignA new UKOSS cohort study was designed, based on the 2009–10 study, and following consultation with the Pandemic Flu Planning Group at the Royal College of Obstetricians and Gynaecologists and the UKOSS Steering Committee, to identify potential previously unanswered questions.SettingUK maternity units.ParticipantsAll pregnant women admitted to hospital with influenza in a future pandemic.Main outcome measuresManagement of pregnant women with influenza infection, intervention rates, treatment and pregnancy outcome for both the mother and fetus.ResultsThe study was designed and approved by the UKOSS Steering Committee and then placed into hibernation for activation in the event of an influenza pandemic.ConclusionsPregnant women, as a result of their changed immunological status, appear to be particularly susceptible to infection, including from influenza. The existence of the UKOSS enabled us to rapidly mount a study of pregnant women who were hospitalised with 2009 A/H1N1 influenza. Minor modifications to incorporate previously unanswered questions and our previous study enabled us to design, and then put into hibernation, a new study ready to investigate the impact and management of influenza in pregnancy, which is poised for activation in the event of a newly emerging pandemic strain. This will enable real-time data to be available on which to base rapid changes in clinical management as the as-yet-unforeseen pandemic unfolds. In the event of an influenza pandemic the study will be available to be immediately activated following expedited regulatory approvals.Trial registrationCurrent Controlled Trials ISRCTN44137563.FundingThe National Institute for Health Research Health Services and Delivery Research programme.

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Prenatal electrocardiogram testing and postpartum depression: A population-based cohort study

Obstetric Medicine ◽

10.1177/1753495x211012502 ◽

2021 ◽

pp. 1753495X2110125

Author(s):

Jonathan S Zipursky ◽

Deva Thiruchelvam ◽

Donald A Redelmeier

Keyword(s):

Cohort Study ◽

Postpartum Depression ◽

Pregnant Women ◽

Odds Ratio ◽

Population Based ◽

Relative Increase ◽

Organic Disease ◽

Increased Risk ◽

Clinical Clue ◽

In Pregnancy

Background Cardiovascular symptoms in pregnancy may be a clue to psychological distress. We examined whether electrocardiogram testing in pregnant women is associated with an increased risk of subsequent postpartum depression. Methods We conducted a population-based cohort study of pregnant women who delivered in Ontario, Canada comparing women who received a prenatal ECG to women who did not. Results In total, 3,238,218 women gave birth during the 25-year study period of whom 157,352 (5%) received an electrocardiogram during prenatal care. Receiving an electrocardiogram test was associated with a one-third relative increase in the odds of postpartum depression (odds ratio 1.34; 95% confidence interval 1.29–1.39, p < 0.001). Conclusion The association between prenatal electrocardiogram testing and postpartum depression suggests a possible link of organic disease with mental illness, and emphasizes that cardiovascular symptoms may be a clinical clue to the presence of an underlying mood disorder.

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The Impact of Microorganisms in Pregnancy

Asian Journal of Medicine and Health ◽

10.9734/ajmah/2021/v19i530326 ◽

2021 ◽

pp. 22-38

Author(s):

Nastaran Ghandali ◽

Hoda Sabati ◽

Ali Emami ◽

Masumeh Dadashaliha

Keyword(s):

Pregnant Women ◽

Viral Infections ◽

Adverse Outcomes ◽

Physiological Changes ◽

Timely Manner ◽

Increased Risk ◽

Recent Outbreak ◽

Immune Changes ◽

The Impact ◽

In Pregnancy

The pregnancy process involves many physiological changes, including weight gain, hormonal, metabolic and immune changes. One of the effective factors in this process is infection caused by microorganisms. Originally, before the advent of antibiotics, pregnancy was known as a risk factor for severe complications of pneumococcal pneumonia. Among viral infections, the 2009 flu pandemic issued a newer warning that some infections may disproportionately affect pregnant women and cause miscarriage and its complications during pregnancy. Generalization of pregnancy as a condition of suppression of the general immune system or increased risk is misleading and prevents the establishment of adequate guidelines for the treatment of pregnant women during epidemics. Viral infection has also become an important factor in pregnancy conditions. The recent outbreak of Ebola and other viral outbreaks and epidemics shows how pregnant women show worse outcomes (such as preterm delivery and fetal adverse outcomes) than the general population and non-pregnant women. The purpose of this article is studying pathogenesis of microorganisms and the risks which pose to the mother and the fetus. In order to investigate these factors, from 120 article prepared from google scholar and Pub med, Elsevier database. Knowing these factors can increase the ability to treat the infections in a timely manner and prevent their effects on the fetus and the patient.

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Incidence, risk factors and impact of seasonal influenza in pregnancy: A national cohort study

PLoS ONE ◽

10.1371/journal.pone.0244986 ◽

2021 ◽

Vol 16 (1) ◽

pp. e0244986

Author(s):

Nicola Vousden ◽

Kathryn Bunch ◽

Marian Knight ◽

Keyword(s):

Cohort Study ◽

Intensive Care ◽

Pregnant Women ◽

Neonatal Intensive Care ◽

Seasonal Influenza ◽

Perinatal Outcomes ◽

Severe Infection ◽

Risk Groups ◽

Increased Risk ◽

In Pregnancy

Background Pregnant women are particularly vulnerable to severe infection from influenza resulting in poor neonatal outcomes. The majority of evidence relates to pandemic 2009 A/H1N1 influenza. The objective of this study was to describe the characteristics and outcomes of pregnant women hospitalised with seasonal influenza. Methods This national, prospective, observational cohort study used the UK Obstetric Surveillance System (UKOSS) to identify all pregnant women admitted to hospital between 01/11/2016 and 31/10/2018 with laboratory confirmed influenza at any gestation and up to two days after giving birth. These were compared to women admitted to give birth that did not have influenza. Baseline characteristics, immunization status, maternal and perinatal outcomes were compared. Results There were 405 women admitted to hospital with laboratory confirmed influenza in pregnancy: 2.7 per 10,000 maternities. Compared to 694 comparison women, women with influenza were less likely to be professionally employed (aOR 0.59, 95%CI 0.39–0.89) or immunised in the relevant season (aOR 0·59, 0·39–0·89) and more likely to have asthma (aOR 2.42, 1.30–4.49) or have had a previous pregnancy complication (aOR 2·47, 1·33–4·61). They were more likely to be admitted to intensive care (aOR 21.3, 2.78–163.1) and to have a cesarean birth (aOR 1·42, 1·02–1.98). Their babies were more likely to be admitted to neonatal intensive care (aOR 1.86, 1·01–3·42). Conclusions Immunization reduces the risk of hospitalisation with influenza in pregnancy which is associated with increased risk of morbidity for both the mother and baby. There is a continued need to increase awareness of safety and effectiveness of immunization in pregnancy and provision within antenatal care settings, especially for high-risk groups.

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Psychological adversity in pregnancy: what works to improve outcomes?

Journal of Children s Services ◽

10.1108/jcs-01-2014-0003 ◽

2014 ◽

Vol 9 (2) ◽

pp. 96-108 ◽

Cited By ~ 6

Author(s):

Vivette Glover ◽

Jane Barlow

Keyword(s):

Pregnant Women ◽

Prenatal Stress ◽

Risk Groups ◽

Anxiety And Depression ◽

Content Type ◽

Increased Risk ◽

Social Adversity ◽

Long Term Impact ◽

The Impact ◽

In Pregnancy

Purpose – Foetal programming is one of the key mechanisms by which physical and social adversity is biologically embedded during pregnancy. While early interest in such programming focused on the long-term impact of the mother's nutritional state on the child's later physical health, more recent research has identified an increased risk of psychopathology in children of women who have experienced stress, anxiety and depression during pregnancy. The purpose of this paper is to examine the literature addressing the impact of stress in pregnancy and the implications for practice. Design/methodology/approach – An overview of the literature has been provided. Findings – Both anxiety and depression in pregnancy are common, with a prevalence in the region of 20 per cent. Exposure in pregnancy to anxiety, depression and stress from a range of sources (e.g. bereavement, relationship problems, external disasters and war), is associated with a range of physical (e.g. congenital malformations, reduced birthweight and gestational age), neurodevelopmental, cognitive, and emotional and behavioural (e.g. ADHD, conduct disorder) problems. The magnitude is significant, with the attributable risk of childhood behaviour problems due to prenatal stress being between 10 and 15 per cent, and the variance in cognitive development due to prenatal stress being around 17 per cent. A range of methods of intervening are effective in improving both maternal anxiety and depression, and in the longer term should improve outcomes for the infant and child. Research limitations/implications – This research highlights the importance of intervening to support the psychological wellbeing of pregnant women to improve outcomes for infants and children, and points to the need for further research into innovative ways of working, particularly with high-risk groups of pregnant women. Originality/value – The paper provides an update of earlier overviews.

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Incidence, risk factors and impact of seasonal influenza in pregnancy: A national cohort study

10.1101/2020.07.23.20160705 ◽

2020 ◽

Cited By ~ 1

Author(s):

Nicola Vousden ◽

Kathryn Bunch ◽

Marian Knight ◽

Keyword(s):

Cohort Study ◽

Intensive Care ◽

Pregnant Women ◽

Neonatal Intensive Care ◽

Seasonal Influenza ◽

Perinatal Outcomes ◽

Severe Infection ◽

Risk Groups ◽

Increased Risk ◽

In Pregnancy

Background Pregnant women are particularly vulnerable to severe infection from influenza resulting in poor neonatal outcomes. The majority of evidence relates to pandemic 2009 A/H1N1 influenza. The objective of this study was to describe the characteristics and outcomes of pregnant women hospitalised with seasonal influenza. Methods This national, prospective, observational cohort study used the UK Obstetric Surveillance System (UKOSS) to identify all pregnant women admitted to hospital between 01/11/2016 and 31/10/2018 with laboratory confirmed influenza together with a comparison group of pregnant women. Baseline characteristics, immunisation status, maternal and perinatal outcomes were compared. Results There were 405 women admitted to hospital with laboratory confirmed influenza in pregnancy: 2.7 per 10,000 maternities. Compared to 694 comparison women, women with influenza were less likely to be professionally employed (aOR 0.59, 95%CI 0.39-0.89) or immunised in the relevant season (aOR 0.59, 0.39-0.89) and more likely to have asthma (aOR 2.42, 1.30-4.49) or have had a previous pregnancy complication (aOR 2.47, 1.33-4.61). They were more likely to be admitted to intensive care (aOR 21.3, 2.78-163.1) and to have a caesarean birth (aOR 1.42, 1.02-1.98). Their babies were more likely to be admitted to neonatal intensive care (aOR 1.86, 1.01-3.42). Conclusions Immunisation reduces the risk of hospitalisation with influenza in pregnancy which is associated with increased risk of morbidity for both the mother and baby. There is a continued need to increase awareness of safety and effectiveness of immunisation in pregnancy and provision within antenatal care settings, especially for high risk groups.

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Impact of the COVID-19 pandemic on mental health in pregnancy women: results from two cohort studies in China

10.21203/rs.3.rs-42153/v1 ◽

2020 ◽

Author(s):

Hong Mei ◽

Na Li ◽

Junwei Li ◽

Dan Zhang ◽

Zhongqiang Cao ◽

...

Keyword(s):

Mental Health ◽

Cohort Study ◽

Pregnant Women ◽

Anxiety And Depression ◽

Significant Difference ◽

Stress Levels ◽

Set Up ◽

Anxiety Depression ◽

The Impact ◽

In Pregnancy

Abstract Background The COVID-19 pandemic led to a global atmosphere of anxiety and depression. However, the impact of this disaster on mental health in pregnancy women was not clear. Methods Based on two cohort study, the Novel Coronavirus Disease Influenced Pregnant Cohort Study (NCP) set up during the COVID-19 epidemic and the Healthy Baby Cohort Study (HBC) set up in 2012, we compared the anxiety, depression and stress levels of pregnant women who did not or did go through the COVID-19 pandemic and analyzed the risk factors for mental health in pregnancy women. Results There were 784 and 2448 participants in the CNP and HBC studies involved in the analysis, respectively. We found that there were 23.09% and 4.72% pregnant women suffering for mild and moderate-to-several anxieties for those in the NCP study, and 21.53% and 3.06% in the HBC study. The mild and moderate-to-several depression rate was 25.89% and 11.35% for those in the NCP study, and 19.81% and 0.51% for those in the HBC study, respectively. No significant difference was found for anxiety, depression and stress levels was found at each gestational trimester (p > 0.05). The pandemic of COVID-19 was significantly associated with maternal depression and stress (p < 0.05), with the co-efficient and 95%CI as 0.37 (0.18, 0.55) and − 0.12 (-0.09, -0.32), respectively. Pregnant women with pre-pregnancy obesity, higher educational level or good sleep quality might have lower risks for anxiety, depression and stress compared with the referenced groups. conclusions The pandemic had a huge impact on depression, especially moderate-to-sever level, in pregnant women at whatever gestational week; and that pre-pregnancy obesity, highly educated and sleep well ones had less anxiety and depression risks. The society, especially the family members, should pay more attention to pregnant ones and give more social support to them.

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Caribbean Consortium for Research in Environmental and Occupational Health (CCREOH) Cohort Study: influences of complex environmental exposures on maternal and child health in Suriname

BMJ Open ◽

10.1136/bmjopen-2019-034702 ◽

2020 ◽

Vol 10 (9) ◽

pp. e034702

Author(s):

Wilco Zijlmans ◽

Jeffrey Wickliffe ◽

Ashna Hindori-Mohangoo ◽

Sigrid MacDonald-Ottevanger ◽

Paul Ouboter ◽

...

Keyword(s):

Cohort Study ◽

Occupational Health ◽

Pregnant Women ◽

Fish Consumption ◽

Depression Scale ◽

Environmental Exposures ◽

International Standards ◽

Long Term Effects ◽

The Impact ◽

Environmental And Occupational Health

PurposeThe Caribbean Consortium for Research in Environmental and Occupational Health prospective environmental epidemiologic cohort study addresses the impact of chemical and non-chemical environmental exposures on mother/child dyads in Suriname. The study determines associations between levels of environmental elements and toxicants in pregnant women, and birth outcomes and neurodevelopment in their children.ParticipantsPregnant women (N=1143) were enrolled from December 2016 to July 2019 from three regions of Suriname: Paramaribo (N=738), Nickerie (N=204) and the tropical rainforest interior (N=201). Infants (N=992) were enrolled at birth. Follow-up will take place until children are 48 months old.Findings to dateBiospecimens and questionnaire data on physiological and psychosocial health in pregnant women have been analysed. 39.1% had hair mercury (Hg) levels exceeding values considered safe by international standards. Median hair Hg concentrations in women from Paramaribo (N=522) were 0.64 µg/g hair (IQRs 0.36–1.09; range 0.00–7.12), from Nickerie (N=176) 0.73 µg/g (IQR 0.45–1.05; range 0.00–5.79) and the interior (N=178) 3.48 µg/g (IQR 1.92–7.39; range 0.38–18.20). 96.1% of women ate fish, respective consumption of the three most consumed carnivorous species, Hoplias aimara, Serrasalmus rhombeus and Cichla ocellaris, known to have high Hg levels, was 44.4%, 19.3% and 26.3%, respectively, and was greater among the interior subcohort. 89% frequently consumed the vegetable tannia, samples of which showed presence of worldwide banned pesticides. 24.9% of pregnant women had Edinburgh Depression Scale scores indicative of probable depression.Future plansFish consumption advisories are in development, especially relevant to interior women for whom fish consumption is likely to be the primary source of Hg exposure. Effects of potentially beneficial neuroprotective factors in fish that may counter neurotoxic effects of Hg are being examined. A pesticide literacy assessment in pregnant women is in progress. Neurodevelopmental assessments and telomere length measurements of the children to evaluate long-term effects of prenatal exposures to toxicant mixtures are ongoing.

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Body mass index and risk of all-cause mortality in normotensive and hypertensive adults: The Rural Chinese Cohort Study

Public Health Nutrition ◽

10.1017/s1368980021001592 ◽

2021 ◽

pp. 1-25

Author(s):

Qionggui Zhou ◽

Xuejiao Liu ◽

Yang Zhao ◽

Pei Qin ◽

Yongcheng Ren ◽

...

Keyword(s):

Cohort Study ◽

Population Based ◽

Normal Weight ◽

Sensitivity Analyses ◽

Hypertension Status ◽

Moderation Effect ◽

Increased Risk ◽

All Cause Mortality ◽

Chinese Cohort ◽

The Impact

Abstract Objective: The impact of baseline hypertension status on the BMI–mortality association is still unclear. We aimed to examine the moderation effect of hypertension on the BMI–mortality association using a rural Chinese cohort. Design: In this cohort study, we investigated the incident of mortality according to different BMI categories by hypertension status. Setting: Longitudinal population-based cohort Participants: 17,262 adults ≥18 years were recruited from July to August of 2013 and July to August of 2014 from a rural area in China. Results: During a median 6-year follow-up, we recorded 1109 deaths (610 with and 499 without hypertension). In adjusted models, as compared with BMI 22-24 kg/m2, with BMI ≤18, 18-20, 20-22, 24-26, 26-28, 28-30 and >30 kg/m2, the HRs (95% CI) for mortality in normotensive participants were 1.92 (1.23-3.00), 1.44 (1.01-2.05), 1.14 (0.82-1.58), 0.96 (0.70-1.31), 0.96 (0.65-1.43), 1.32 (0.81-2.14), and 1.32 (0.74-2.35) respectively, and in hypertensive participants were 1.85 (1.08-3.17), 1.67 (1.17-2.39), 1.29 (0.95-1.75), 1.20 (0.91-1.58), 1.10 (0.83-1.46), 1.10 (0.80-1.52), and 0.61 (0.40-0.94) respectively. The risk of mortality was lower in individuals with hypertension with overweight or obesity versus normal weight, especially in older hypertensives (≥60 years old). Sensitivity analyses gave consistent results for both normotensive and hypertensive participants. Conclusions: Low BMI was significantly associated with increased risk of all-cause mortality regardless of hypertension status in rural Chinese adults, but high BMI decreased the mortality risk among individuals with hypertension, especially in older hypertensives.

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Adverse Perinatal Outcomes Associated with Stage 1 Hypertension in Pregnancy: A Retrospective Cohort Study

American Journal of Perinatology ◽

10.1055/s-0041-1739470 ◽

2021 ◽

Author(s):

Elizabeth Norton ◽

Frances Shofer ◽

Hannah Schwartz ◽

Lorraine Dugoff

Keyword(s):

Cohort Study ◽

Retrospective Cohort ◽

Perinatal Outcomes ◽

Hypertensive Disorder ◽

Hypertension In Pregnancy ◽

Increased Risk ◽

Hypertensive Disorder Of Pregnancy ◽

Adverse Perinatal Outcomes ◽

Stage 1 ◽

In Pregnancy

Objective To determine if women who newly met criteria for stage 1 hypertension in early pregnancy were at increased risk for adverse perinatal outcomes compared with normotensive women. Study Design We conducted a retrospective cohort study of women who had prenatal care at a single institution and subsequently delivered a live infant between December 2017 and August 2019. Women with a singleton gestation who had at least two prenatal visits prior to 20 weeks of gestation were included. We excluded women with known chronic hypertension or other major maternal illness. Two groups were identified: (1) women newly diagnosed with stage 1 hypertension before 20 weeks of gestation (blood pressure [BP] 130–139/80–89 on at least two occasions) and (2) women with no known history of hypertension and normal BP (<130/80 mm Hg) before 20 weeks of gestation. The primary outcome was any hypertensive disorder of pregnancy; secondary outcomes were indicated preterm birth and small for gestational age. Generalized linear models were used to compare risk of adverse outcomes between the groups. Results Of the 1,630 women included in the analysis, 1,443 women were normotensive prior to 20 weeks of gestation and 187 women (11.5%) identified with stage 1 hypertension. Women with stage 1 hypertension were at significantly increased risk for any hypertensive disorder of pregnancy (adjusted risk ratio [aRR]: 1.86, 95% confidence interval [CI]: 1.12–3.04) and indicated preterm birth (aRR: 1.83, 95% CI: 1.12–3.02). Black women and obese women with stage 1 hypertension were at increased for hypertensive disorder of pregnancy compared with white women and nonobese women, respectively (aRR: 1.32, 95% CI: 1.11–1.57; aRR: 1.69, 95% CI: 1.39–2.06). Conclusion These results provide insight about the prevalence of stage 1 hypertension and inform future guidelines for diagnosis and management of hypertension in pregnancy. Future research is needed to assess potential interventions to mitigate risk. Key Points

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Impact of Cleft lip and Palate on Mother-to-Infant Bonding: a Cross-Sectional Study in the Japan Environment and Children's Study

10.21203/rs.2.13306/v1 ◽

2019 ◽

Author(s):

Shinobu Tsuchiya ◽

Masahiro Tsuchiya ◽

Haruki Momma ◽

Takeyoshi Koseki ◽

Kaoru Igarashi ◽

...

Keyword(s):

Cohort Study ◽

Maternal Depression ◽

Birth Cohort ◽

Maternal Age ◽

Cleft Lip ◽

Advanced Age ◽

Psychological Status ◽

Birth Cohort Study ◽

Increased Risk ◽

The Impact

Abstract Background Cleft lip and/or palate (CL/P) is among the most prevalent congenital birth defects. They negatively affect maternal psychological status and may consequently result in higher prevalence of child maltreatment. However, the association of CL/P births with bonding disorders still remains unclear. To address this question, we examined the impact of CL/P birth on mother-to-infant bonding, using the nationwide birth cohort study, Japan Environment and Children's Study. Methods This study was conducted as a nationwide birth cohort study of the Japan environment and children’s study (JECS), an ongoing nationwide birth cohort study in Japan. 104,065 of foetuses in fifteen regional centres in JECS were enrolled. Finally, the participants consisted of 79,140 mother-infant pairs, of which 211 mothers with CL/P infants were included in our analyses. Results First, no increased risk of bonding disorders was observed among all the mothers with CL/P births (odds ratio [95% CI]; 0.97 [0.63-1.48], p = 0.880), and advanced maternal age or multiple parity would adversely affect the associations between bonding disorders and CL/P births, respectively. Thus, after stratification with a combination of maternal age and parity, a significant association of CL/P birth with bonding disorders was found only among advanced-age multiparae (OR [95% CI] = 2.51 [1.17-5.37], p = 0.018), but it was weakened after additional adjustment for maternal depression. Conclusion CL/P birth may increase the risk of bonding disorders among advanced-age multiparae possibly through maternal depression. This finding provides valuable information for the provision of multidisciplinary cleft care.

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