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. Maryland has 3 practicing cardiac surgeons. Broken out by city, cardiac surgery doctor density in Baltimore is 1, in Columbia is 1, in Elkridge is 1, and in Towson is 1.

Maryland was one of the thirteen original colonies, and achieved statehood in 1788. Maryland’s population is 5,600,388; Annapolis is its capital and home to the U.S. Naval Academy. Baltimore is the largest city, and is home to world-acclaimed Johns-Hopkins University and Hospital. There are myriad activities available for residents or visitors, including arts and theater, sports, museums, hiking, biking and walking trails, Famous people from Maryland include musician Frank Zappa, baseball great Babe Ruth, and Francis Scott Key, who wrote the “The Star-Spangled Banner.”

According to 2005 Census estimates, Maryland has a population of 5,600,388. Of this population, 1,360,481 are under the age of 18 and 641,040 are at or above the age of 65.