Rapid or irregular heartbeat. Bacteria or fungi further damage the heart valves, muscles, and linings. Congenital heart disease. Injections of contaminated materials into the child's bloodstream, such as with self-administered intravenous drugs. Use of immunosuppressive drugs.
Artificial heart valves.
Excess alcohol consumption. These include dental work, childbirth, and surgery of the urinary or gastrointestinal tract. Consult your doctor before becoming pregnant. Don't use mind-altering drugs. Usually curable with early diagnosis and treatment.