A tiny single celled microorganism.

A barium swallow test is also known as esophagography, an imaging procedure used to examine the upper gastrointestinal tract, which includes the esophagus and, to a lesser extent, the stomach.

A ventricular assist device (VAD) is a mechanical circulatory device that is used to partially or completely replace the function of a failing heart.

A drug that reduces the heart rate and cardiac output, which lowers blood pressure and makes the heart beat slowly with less force. Beta-blockers are also known as beta-adrenergic blocking agents. Commonly prescribed include Acebutolol (Sectral), Atenolol (Tenormin), Betaxolol (Kerlone), Bisoprolol/ hydrochlorothiazide (Ziac), Bisoprolol (Zebeta), Carteolol (Cartrol), Metoprolol (Lopressor, Toprol XL), Nadolol (Corgard), Propranolol (Inderal), Sotalol (Betapace) and Timolol (Blocadren)

The procedure of taking a small tissue sample (i.e., heart, muscle, bone marrow, etc.) for examination.

A gelatinous or semisolid mass of coagulated blood.

A blood test that measures the concentration of oxygen in the blood.

Blood pressure, sometimes referred to as arterial blood pressure, is the pressure exerted by circulating blood upon the walls of blood vessels, and is one of the principal vital signs.

A tubular structure carrying blood through tissues and organs; a vein, artery, or capillary.

See anti-coagulant.

An specialized x-ray of the left hand and wrist that is used to measure the degree of skeletal maturity. A bone age assesses the state of development or decline of the skeleton or its segments in comparison with x-ray views of bone structures of other individuals of the same chronological age.

The soft, fatty, vascular tissue that fills most bone cavities and is the source of red blood cells and many white blood cells.

Inflammation of the mucous membrane in the bronchial tubes.

Bundle branch block (BBB) is a disruption in the normal flow of electrical pulses that drive the heart-beat.