Cardiac surgery involves surgery on the heart or heart valves. A cardiac surgeon performs heart surgery, also known as coronary artery bypass surgery, on patients who have heart disease or heart valve disorders. Reasons that may make heart surgery necessary are: coronary artery disease, congenital heart defects, disease of the heart valves, or heart attack. Some heart conditions can cause permanent damage to the heart muscle, and can be fatal.

Doctor density varies by specialty and location. Kentucky has 3 practicing cardiac surgeons. Broken out by city, cardiac surgery doctor density in Lexington is 1, in Madisonville is 1, and in Owensboro is 1.

Kentucky is known for its thoroughbred horses, tobacco and bourbon, but there’s much more. The Kentucky parks system draw thousands of visitors each year for swimming, boating, hiking, biking, and picnicking. The capital city is Frankfort, and has many historic homes and sites to visit, including the Old Governor’s Mansion, the Capital City Museum, and the Liberty Hall Historic Site. Visitors can explore a cave in Mammoth Cave National Park, or when in Louisville, hear authentic bluegrass music. Famous people born in Kentucky are former president Abraham Lincoln, fighter Muhammad Ali, and actor Johnny Depp.

According to 2005 Census estimates, Kentucky has a population of 4,173,405. Of this population, 959,891 are under the age of 18 and 522,811 are at or above the age of 65.