Aorta. The aorta is the body's largest artery (the blood vessels that carry oxygen-rich blood). Roughly the diameter of a garden hose, this artery extends from the aortic valve in the heart down through the chest and abdominal region, where it divides into a blood vessel that supplies each leg.
WolffâParkinsonâWhite syndrome (WPW) is one of several disorders of the electrical system of the heart that are commonly referred to as pre-excitation syndromes.olffâParkinsonâWhite syndrome (WPW) is one of several disorders of the electrical system of the heart that are commonly referred to as pre-excitation syndromes.
The incidence of preexcitation and Wolff-Parkinson-White (WPW) syndrome ranges from 0.1 to 3 cases per 1000 population (average, 1.5 cases per 1000 population) in otherwise healthy persons. This includes only patients with manifest preexcitation (delta wave evident on surface 12-lead electrocardiography [ECG]).