During the band's hiatus, Stefani embarked on a solo pop career in 2004 by releasing her debut studio album Love. Angel. Music. Baby. Inspired by pop music from the 1980s, the album was met with both critical and commercial success.
A normal heart has valves, arteries and chambers that carry the blood in a circulatory pattern: body-heart-lungs-heart-body. When all chambers and valves work correctly, the blood is pumped through the heart, to the lungs for oxygen, back the heart and out to the body for delivery of oxygen. When valves, chambers, arteries and veins are malformed, this circulation pattern can be impaired. Congenital heart defects are malformations that are present at birth. They may or may not have a disruptive effect on a person's circulatory system. Congenital heart defects are structural problems with the heart present at birth. They result when a mishap occurs during heart development soon after conception and often before the mother is aware that she is pregnant.
Congenital heart defects are sometimes also called congenital heart diseases, cyanotic heart disease, heart defects and congenital cardiovascular malformations. A congenital heart defect is a structural problem in the heart that is present at birth, whether it is inherited or caused by the environment.