article_snippet: With each heartbeat, the right side of the heart receives oxygen-poor blood from the body and pumps the body to the lungs.
article_snippet: The left side of the heart receives oxygen-rich blood from the lungs and pumps the lungs to the body.
article_snippet: ASDs and VSDs allow blood to pass from the left side of the heart to the right side.
article_snippet: Thus, oxygen-rich blood mixes with oxygen-poor blood.
article_snippet: As a result, some oxygen-rich blood is pumped to the lungs instead of the body.
article_snippet: - National Heart, Lung and Blood Institute .
article_snippet: Doctors will continue to mend hospital heart using tissue from elsewhere in the organ .