gram-positive bacteria that, when grown on blood-agar plates, completely hemolyze the blood and produce a clear zone around the bacteria colony. Group A beta-hemolytic streptococci cause disease in humans.
The life-threatening compression of the heart by the fluid accumulating in the pericardial sac surrounding the heart.
a group of diseases that affect the myocardium's (heart muscle's) structure or function.
surgical incision of any commissure as in cardiac valves to increase the size of the orifice.
solid, liquid, or gaseous masses of undissolved matter traveling with the fluid current in a blood or lymphatic vessel.
the condition of being inadequate for a given purpose, such as heart valves that do not close properly.
international normalized ratio
the World Health Organization's standard for reporting the prothrombin time assay test when the thromboplastin reagent developed by the first International Reference Preparation is used. The reagent was developed to prevent variability in prothrombin time testing results and provide uniformity in monitoring therapeutic levels for coagulation during oral anticoagulation therapy.
the inflammatory process that causes nodules to form in the myocardial tissue; the nodules become scar tissue over time. Inflammation of the heart muscle.
pericardial friction rub
friction sound heard over the fourth left intercostal space near the sternum; a classic sign of pericarditis.
small, purplish, hemorrhagic spots on the skin that appear in certain illnesses and bleeding disorders.