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    Deaths From Heart Birth Defects Decline

    Study Shows 24% Drop in Deaths From Heart Defects From 1999 to 2006
    By
    WebMD Health News
    Reviewed by Laura J. Martin, MD

    Nov. 22, 2010 -- Deaths from congenital heart defects in both children and adults have declined substantially in recent years, according to new research.

    ''From 1999 to 2006, we saw a 24% decrease in death rates resulting from congenital heart disease among all ages," says researcher Suzanne Gilboa, PhD, an epidemiologist at the National Center on Birth Defects and Developmental Disabilities at the CDC.

    The decline continues a trend that has been ongoing for decades, Gilboa says, and wasn't unexpected.

    In a comparable study published in 2001, deaths due to congenital heart defects dropped 39% from 1979 to 1997.

    "We don't really know why," she tells WebMD. However, she says, "We speculate it has a lot to do with the kind of treatment that children who are born with congenital heart disease get."

    Death Rates From Congenital Heart Disease

    For the new study, Gilboa and her colleagues used data from death certificates filed in the U.S. from 1999 to 2006, calculating the annual death rates from congenital heart disease by age at death, sex, and ethnicity.

    They looked only at death rates, not whether congenital heart disease itself was increasing or decreasing.

    Among the congenital heart disease diagnoses were atrial septal defect (the wall separating the upper chambers or atria doesn't close completely), ventricular septal defect (one or more holes in the wall separating the right and left ventricles), and patent ductus arteriosus (failure of a blood vessel called the ductus arteriosus to close, resulting in abnormal blood flow).

    The researchers found:

    • 41,494 deaths related to congenital heart disease; for 27,960 of these congenital heart defects was the underlying cause. Death rates were highest among non-Hispanic blacks.
    • For Hispanics, death rates were comparable to those of whites in some age groups, but death rates were lower for some age groups in Hispanics compared to whites.
    • Deaths from congenital heart disease dropped an average of 3.6% each year during the years studied, for a total 24% decline.
    • Infant deaths account for nearly half (48.1%) of all deaths from congenital heart disease.

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