Subacute bacterial endocarditis (SBE) is an infection that centers on the inner surfaces of the heart, usually on valvular tissue. Because the infection is so central, and affects such a vital part of the body and is extremely dangerous. Before the advent of antibiotics, this condition was always fatal. Since antibiotics have been discovered the mortality rates have decreased, but there still is quite a significant risk of morbid events. In fact, SBE is often discovered at the time of a major...