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Parental smoking and congenital heart disease: a meta-analysis

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Author:
No author available
Journal Title:
Chinese Journal of Perinatal Medicine
Issue:
11
DOI:
10.3760/cma.j.cn113903-20211203-01002
Key Word:
吸烟;烟草烟污染;心脏缺损,先天性;Meta分析;环境暴露;Smoking;Tobacco smoke pollution;Heart defects, congenital;Meta-analysis;Environmental exposure

Abstract: Objective:To assess the association between maternal smoking, passive exposure to smoking, or paternal smoking in the first trimester and the risk of congenital heart disease (CHD) in offspring.Methods:A meta-analysis was performed on selected case-control studies on parents in the first trimester and CHD involving CHD patients regardless of age or ethnicity, after searching PubMed, Web of Science, Cochrane Library, CNKI, WanFang Data, and China Biology Medicine up to April 2021. The main outcome was CHD confirmed by cardiac ultrasound or cardiac surgery and the quality of included studies was assessed using the Newcastle-Ottawa Scale (≥4 scores). Statistical analysis was carried out using RevMan5.4 software and heterogeneity was determined by Q test combined with I 2 test. In accordance with the heterogeneity test results, the appropriate model (random or fixed) was selected. Subgroup analysis was performed according to the subtype of CHD. Potential publication bias was assessed by funnel plots. Results:A total of 35 studies involving 38 125 subjects were included. The pooled results showed that the risk of CHD in offspring born to mothers who were active or passive smokers in the first trimester was 1.20 ( OR=1.20, 95% CI:1.15-1.26, Z=8.15, P<0.001, I 2=35%) and 1.95 times ( OR=1.95, 95% CI:1.70-2.24, Z=9.52, P<0.001, I 2= 69%) that of non-smoking mothers. The risk of CHD in offspring of fathers who smoked in the first trimester was 1.88 times higher than that of non-smoking parents ( OR=1.88, 95% CI:1.49-2.36, Z=5.39, P<0.001, I 2= 69%). Subgroup analysis indicated an association between active maternal smoking in the first trimester and an increased risk of atrial septal defect ( OR=1.41, 95% CI:1.03-1.92, P=0.030, I 2= 71%) as well as between maternal passive smoking and increased risk of atrioventricular septal defect ( OR=1.76, 95% CI:1.37-2.26, P<0.001, I 2= 11%). Conclusion:Maternal and paternal smoking in the first trimester may both increase the risk of CHD in offspring.

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