Unstable angina is a condition in which your heart doesn't get enough blood flow and oxygen. It may lead up to a heart attack.
Angina is a type of chest discomfort caused by poor blood flow through the blood vessels (coronary vessels) of the heart muscle (myocardium).
See also:
Accelerating angina; New-onset angina; Angina - unstable; Progressive angina
Hang around a hospital coronary care unit, and you will hear the phrase "unstable angina" used a lot. "Mr. Smith was admitted last... Read more »
Source: ADAM Encyclopedia
Ventricular tachycardia (VT) is a rapid heartbeat that starts in the ventricles.Alternative NamesWide-complex tachycardia; V tach; Tachycardia -... Read more »
Source: ADAM Encyclopedia
Paroxysmal supraventricular tachycardia (PSVT) is an occasional rapid heart rate. "Paroxysmal" means from time to time. Alternative NamesPSVT;... Read more »
Source: ADAM Encyclopedia
Multifocal atrial tachycardia is a rapid heart rate that occurs when too many signals (electrical impulses) are sent from the upper heart to the... Read more »
Source: HealthCentral Encyclopedia
The heart normally beats at a rate of about 60 to 100 beats per minute at rest. A rate faster than 100 beats a minute in an adult is called... Read more »
Leading virologist Guan Yi says the H1N1 (swine) flu virus is "very unstable," which means it is capable of combining and swapping genetic material... Read more »