This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

KANSAS CITY, Mo. — Heart defects are the most common birth defects. Almost one out of 100 babies is born with one.

Heart advocates are pushing for a law in Missouri that would require every newborn to be screened with a pulse oximetry test before leaving the hospital. The federal government recommends it for all newborns. The screening involves placing a small wrap around a finger to measure blood oxygen levels. Low levels can be a possible sign of a heart defect.

Dr. Bill Drake, a cardiologist at Children’s Mercy Hospital, says the law has the potential to save 20 babies a year in Missouri.

FOX 4 Medical Reporter Meryl Lin McKean talked with Dr. Drake and a family whose daughter survived being born with only half a heart.