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Smoking Around Expectant Moms Can Harm Babies' Hearts

By Robert Preidt

SUNDAY, March 24, 2019 (HealthDay News) -- Fathers-to-be who expose their pregnant partners to secondhand smoke put their babies at risk of heart defects, researchers warn.

For the new study, investigators in China reviewed 125 studies that included a total of nearly 9 million prospective parents and more than 137,000 babies with congenital heart defects.

All types of parental smoking were linked to an increased risk of these birth defects, the analysis found. Compared to no smoking exposure, the increased risk was 124 percent for women exposed to secondhand smoke while pregnant, 74 percent for men smoking, and 25 percent for women smoking.

"Fathers are a large source of secondhand smoke for pregnant women, which appears to be even more harmful to unborn children than women smoking themselves," said study author Jiabi Qin of Central South University in Changsha, China.

"Fathers-to-be should quit smoking," Qin said in a news release from the European Society of Cardiology.

The overall risk with all types of parental smoking was greater when the analysis was restricted to Asian groups, the study authors noted.

Women's exposure to secondhand smoke was dangerous throughout pregnancy -- and even before, according to the report. While those who smoked before getting pregnant had no added risk, those who smoked during pregnancy were more apt to give birth to a child with a heart defect.

Specifically, smoking while pregnant was associated with a 27 percent higher risk for the newborn to have a hole in the wall between the heart's upper chambers (atrial septal defect), and a 43 percent higher risk of an abnormality in which the smooth flow of blood through the heart is blocked (right ventricular outflow tract obstruction).

Congenital heart defects are the leading cause of stillbirth. These birth defects also affect eight in 1,000 babies born worldwide. Though treatments have improved, the effects last a lifetime.

Qin said women should stop smoking before trying to conceive and should avoid smokers, too. Employers can help by ensuring workplaces are smoke-free.

"Doctors and primary health care professionals need to do more to publicize and educate prospective parents about the potential hazards of smoking for their unborn child," Qin concluded.

The study was published March 24 in the European Journal of Preventive Cardiology.

More information

The March of Dimes has more on smoking and pregnancy.

SOURCE: European Society of Cardiology, news release, March 24, 2019

Copyright © 2019 HealthDay. All rights reserved. URL:http://consumer.healthday.com/Article.asp?AID=744054

Resources from HONselect: HONselect is the HON's medical search engine. It retrieves scientific articles, images, conferences and web sites on the selected subject.
Smoking
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The list of medical terms above are retrieved automatically from the article.

Disclaimer: The text presented on this page is not a substitute for professional medical advice. It is for your information only and may not represent your true individual medical situation. Do not hesitate to consult your healthcare provider if you have any questions or concerns. Do not use this information to diagnose or treat a health problem or disease without consulting a qualified healthcare professional.
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