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9. Asthma in women : implications for pregnancy and perinatal outcomes

Author

Tata, Laila J.

Subjects
616.2380082, RC 321 Neuroscience. Biological psychiatry. Neuropsychiatry
Abstract

Background: Asthma now affects up to 10% of pregnant women in high income countries and international prevalence is rising. It is already one of the commonest chronic diseases that can complicate pregnancy and previous studies have raised concern that women with asthma have increased pregnancy risks. Precise estimates of the magnitude of these risks and the extent to which they may differ by asthma severity and asthma exacerbation rates, have not been determined. Aim: The overall aim of this thesis was to investigate the impact of asthma and asthma therapies on pregnancy and perinatal outcomes in the general female population. Methods: The Health Improvement Network primary care database from the United Kingdom was used to develop a dataset of women matched to their liveborn children and all data on these pregnancies and on pregnancies ending in stillbirth, miscarriage or therapeutic abortion, were extracted for analysis. Three separate studies were carried out using the developed dataset. First, a cohort design was used to compare fertility rates of women with and without asthma or other allergic disease. Secondly, a cross-sectional design was used to compare risks of adverse pregnancy outcomes and obstetric complications in women with and without asthma. Thirdly, a case-control design was used to compare the risk of congenital malformation in children born to women with and without asthma, and to assess whether asthma medications are teratogenic. Results: A study population of 1,059,246 women was obtained and pregnancies ending in 268,601 matched live births, 986 stillbirths, 35,272 miscarriages and 37,118 therapeutic abortions were identified. Women with asthma or other allergic disease had similar fertility rates (live births per 1,000 person-years) to women in the general population. Women with asthma also had a similar risk of pregnancy ending in stillbirth (Odds Ratio (OR)=1.04, 95% confidence interval (CI) 0.86-1.24)) or therapeutic abortion (OR=0.95, 95%CI 0.92-0.99), but had a small relative increase in risk of pregnancy ending in miscarriage (OR=1.10, 95%CI 1.06-1.13), compared with women without asthma. Risks of most obstetric complications were similar in women with and without asthma, regardless of asthma severity or acute exacerbations, with the exception of increased risks of antepartum haemorrhage (OR=1.20, 95%CI 1.08-1.34), postpartum haemorrhage (OR=1.38, 95%CI 1.21-1.57), depression in pregnancy (OR=1.52, 95%CI 1.36-1.69), caesarean section delivery (OR=1.11, 95%CI 1.07-1.16), preterm delivery (OR=1.15, 95%CI 1.06-1.24) and low birth weight (OR=1.18, 95%CI 1.05-1.32) in their offspring. Compared with children born to mothers without asthma, children born to mothers with asthma had a small increased risk of major congenital malformation (OR=1.10, 95%CI 1.01-1.20), however, this was not found for mothers with currently treated asthma (OR=1.06, 95%CI 0.94-1.20). Gestational exposure to asthma medications was safe apart from cromones which may increase the risk of musculoskeletal malformation. Conclusions: These findings indicate that women with asthma do not have substantially increased risks associated with pregnancy or with perinatal outcomes. Treatment with asthma medications before pregnancy and during gestation also appear to be safe for the mother and for the unborn child, providing support for the current practice of optimal pharmacological management of asthma in women of childbearing age.

Published
2007

15. Risk of Venous Thromboembolism With Gout Flares.

Author

Cipolletta, Edoardo, Tata, Laila J., Nakafero, Georgina, Avery, Anthony J., Mamas, Mamas A., and Abhishek, Abhishek

Subjects
*THROMBOEMBOLISM risk factors, *VEINS, *CONFIDENCE intervals, *RISK assessment, *PRIMARY health care, *CASE studies, *HOSPITAL care, *GOUT, *LONGITUDINAL method, *DISEASE complications
Abstract

Objective: Previous studies demonstrated that the risk of venous thromboembolism (VTE) is increased in patients with gout, but not whether there was a temporal association between gout flare and VTE. This study was undertaken to evaluate potential temporal associations between gout flare and VTE. Methods: Data were obtained from electronic primary‐care records from the UK's Clinical Practice Research Datalink, which links data from hospitalization and mortality registers. Using self‐controlled case series analysis adjusted for season and age, we evaluated the temporal association between gout flare and VTE. The 90 days after primary‐care consultation or hospitalization for gout flare was designated the exposed period. This was divided into three 30‐day intervals. The baseline period was up to 2 years before the start of and up to 2 years after the end of the exposed period. The association between gout flare and VTE was measured using adjusted incidence rate ratios (IRRs) with 95% confidence intervals (95% CIs). Results: In total, 314 patients met the inclusion criteria (age ≥18 years, incident gout, no presence of VTE or use of a primary‐care anticoagulant prescription before the start of the pre‐exposure period). Among the 314 patients, VTE incidence was significantly higher in the exposed period than in the baseline period (adjusted IRR 1.83, 95% CI 1.30–2.59). The adjusted IRR of VTE during the first 30 days after gout flare was 2.31 (95% CI 1.39–3.82) relative to the baseline period. No increase in the adjusted IRRs was observed in days 31–60 (adjusted IRR 1.49, 95% CI 0.79–2.81) and days 61–90 (adjusted IRR 1.67, 95% CI 0.91–3.06) relative to baseline. Results were consistent across sensitivity analyses. Conclusion: Among patients with gout, there was a transient increase in the rate of VTE within 30 days after primary‐care consultation or hospitalization for gout flare. [ABSTRACT FROM AUTHOR]

Published
2023
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37. Correction: A Direct-to-Public Peer Support Program (Big White Wall) Versus Web-Based Information to Aid the Self-management of Depression and Anxiety: Results and Challenges of an Automated Randomized Controlled Trial

Author

Morriss, Richard, primary, Kaylor-Hughes, Catherine, additional, Rawsthorne, Matthew, additional, Coulson, Neil, additional, Simpson, Sandra, additional, Guo, Boliang, additional, James, Marilyn, additional, Lathe, James, additional, Moran, Paul, additional, Tata, Laila J, additional, and Williams, Laura, additional

Published
2021
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38. Correction: A Direct-to-Public Peer Support Program (Big White Wall) Versus Web-Based Information to Aid the Self-management of Depression and Anxiety: Results and Challenges of an Automated Randomized Controlled Trial (Preprint)

Author

Morriss, Richard, primary, Kaylor-Hughes, Catherine, additional, Rawsthorne, Matthew, additional, Coulson, Neil, additional, Simpson, Sandra, additional, Guo, Boliang, additional, James, Marilyn, additional, Lathe, James, additional, Moran, Paul, additional, Tata, Laila J, additional, and Williams, Laura, additional

Published
2021
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39. A Direct-to-Public Peer Support Program (Big White Wall) Versus Web-Based Information to Aid the Self-management of Depression and Anxiety: Results and Challenges of an Automated Randomized Controlled Trial

Author

Morriss, Richard, primary, Kaylor-Hughes, Catherine, additional, Rawsthorne, Matthew, additional, Coulson, Neil, additional, Simpson, Sandra, additional, Guo, Boliang, additional, James, Marilyn, additional, Lathe, James, additional, Moran, Paul, additional, Tata, Laila J, additional, and Williams, Laura, additional

Published
2021
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