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Heart Disease

Congenital Heart Failure

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Congenital Heart Disease
Congenital Heart Disease According to the American Heart Association, about 9 of every 1,000 babies born in the U.S. have a congenital heart defect. This is a problem that occurs as the baby's heart is developing during pregnancy, before the baby is born. Congenital heart defects are the most common birth defects. A baby's heart starts to develop at conception, but is completely formed by 8 weeks into the pregnancy. Congenital heart defects happen during this important first 8 weeks of the baby's develo...
Factors Contributing to Congenital Heart Disease
Factors Contributing to Congenital Heart Disease What causes congenital heart disease? A congenital heart defect (CHD) is a heart problem which is present at birth. It is caused by abnormal formation of the heart during fetal development. In most cases, when a baby is born with congenital heart disease, there is no known reason for it. Scientists know that some types of congenital heart defects can be related to an abnormality in the number of an infant's chromosomes, single gene defects, or environment...
Fetal Circulation
Fetal Circulation How does the fetal circulatory system work? During pregnancy, the fetal circulatory system works differently than after birth: The fetus is connected by the umbilical cord to the placenta. This is the organ that develops and implants in the mother's uterus during pregnancy. Through the blood vessels in the umbilical cord, the fetus receives all the necessary nutrition, oxygen. Life support is received from the mother through the placenta. Waste products and carbon dioxide from the fetu...