Eghirayaq ayalning tamaka chikishi qosaqtiki balining yurek kisilige
giriptar bolush xetirini yuquri koturidu.

Tetqiqatchilarning tetqiqan netijisige asaslanghanda, ayallar
eghirayaq bolghan deslepki mezgilde tamaka chekse, yaki tamaka
chikiwatqan sorunda tursa, qosaqtiki balining tughma yurek kisilige
giriptar bolush xetiri yuquri bolidiken.

Smoking While Pregnant Boosts Baby's Heart Defect Risk

HealthDay

By Robert Preidt

Tuesday, November 14, 2006

TUESDAY, Nov. 14 (HealthDay News) -- Add another item to the long
list of reasons to quit smoking: A new study finds that women who
smoke during early pregnancy are more likely to have babies with
congenital heart defects.

U.S. researchers studied 566 infants with a congenital heart defect
(CHD) and 491 infants without a CHD, along with their parents.

They concluded that women who smoked from some point in the month
before conception through to the end of their first trimester were
60 percent more likely to have babies with a CHD. This increased
risk was still evident even if women took prenatal vitamins and
limited their alcohol intake, and occurred regardless of age or race.

Exposure to secondhand smoke in early pregnancy also increased the
risk of CHD, the study found.

"The heart's basic structures develop very early in pregnancy,
before many women realize they are pregnant," study author Sadia
Malik, an assistant professor of pediatrics at the University of
Arkansas for Medical Sciences in Little Rock, explained in a
prepared statement.

"Thus, even if a woman quits smoking at six weeks or later, her
fetus will still have been exposed to the harmful effects of
cigarette smoking during cardiac development," Malik said.

The findings were expected to be presented Tuesday at the American
Heart Association's annual meeting, in Chicago.

Each year in the United States, about 36,000 babies are born with a
heart defect, which can range from holes between the chambers of the
heart to the absence of one or more heart chambers or valves.

HealthDay