Women who smoke while pregnant contribute to the severity of asthma and poor lung function in their children, warns a study.<\/p>\n
The findings published in the journal CHEST suggest that tobacco smoke exposure during pregnancy is more strongly associated with worse lung function than current, ongoing exposure in school-aged children with asthma.<\/p>\n
\u201cThis study implicates maternal smoking in pregnancy as the period of second-hand exposure that is more strongly associated with worse lung function in asthmatic children,\u201d said lead investigator Stacey-Ann Whittaker Brown from Icahn School of Medicine at Mount Sinai, New York.<\/p>\n
\u201cMaternal smoking in pregnancy may set children with asthma on a trajectory of poor lung function in later childhood, and other studies suggest this effect may be lifelong,\u201d Whittaker Brown said.<\/p>\n
Investigators analysed the relationship between lung function and the type of second-hand smoke exposure in a representative sample of school-aged children aged six to 11 years.<\/p>\n
The sample consisted of 2,070 children who participated in the 2007-2012 National Health and Nutrition Examination Survey (NHANES) in the US.<\/p>\n
Detailed information about ongoing second-hand smoke exposure as well as parental self-reported exposure prior to birth was obtained.<\/p>\n
During the study period, lung function was measured using spirometry, and exposure to smoking was assessed through levels of cotinine in the blood, a marker of the extent of current second-hand smoke exposure.<\/p>\n
Thus, investigators were able to distinguish clearly between exposure in pregnancy and ongoing second-hand smoke exposure.<\/p>\n
Nearly 10 per cent of both children with and without asthma in the sample had reduced lung function.<\/p>\n
Investigators found that current tobacco smoke exposure was independently associated with airflow obstruction in school-aged children, although the extent of the association was small.<\/p>\n","protected":false},"excerpt":{"rendered":"
Women who smoke while pregnant contribute to the severity of asthma and poor lung function in their children, warns a study. The findings published in the journal CHEST suggest that tobacco smoke exposure during pregnancy is more strongly associated with worse lung function than current, ongoing exposure in school-aged children with asthma. \u201cThis study implicates […]<\/p>\n","protected":false},"author":1,"featured_media":24009,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[239],"tags":[],"class_list":["post-24008","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health"],"_links":{"self":[{"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/posts\/24008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/comments?post=24008"}],"version-history":[{"count":1,"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/posts\/24008\/revisions"}],"predecessor-version":[{"id":24010,"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/posts\/24008\/revisions\/24010"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/media\/24009"}],"wp:attachment":[{"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/media?parent=24008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/categories?post=24008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blastingskyhawk.com\/english\/wp-json\/wp\/v2\/tags?post=24008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}