Abnormally rapid heart beat.

Abnormally rapid breathing.

A study in which radioactive potassium is carried by the blood and the progress is followed by x-ray pictures.

Local coagulation or clotting of the blood in a part of the circulatory system.

A diagnostic test using an ultrasound device that is passed into the esophagus of the patient to create a clear image of the heart muscle and other parts of the heart.

A transient ischemic attack (TIA) is like a stroke, producing similar symptoms, but usually lasting only a few minutes and causing no permanent damage. Often called a mini stroke, a transient ischemic attack may be a warning.

The three-segmented valve of the heart that keeps blood in the right ventricle from flowing back into the right atrium

An ester formed from glycerol and three fatty acid groups. Triglycerides are the main constituents of natural fats and oils.

A condition that affects only girls and women, results from a missing or incomplete X chromosome.