Congenital heart disease (CHD) is a problem with the heart that exists from birth and can affect both the structure of the heart and the way that blood flows through the heart and its ability to pump blood to the rest of the body. CHD occurs in nearly 1 percent of birth, affecting approximately 40,000 infants born annually in the United States. It can be due to a genetic cause or occur spontaneously. Here’s a quick rundown of the most …