(Encyclopedia) injection, introduction of a fluid into the body, usually by means of a needle and syringe. The material injected may be a test substance (as in determining allergic sensitivity or…
(Encyclopedia) diureticdiureticdīˌyərĕtˈĭk [key], drug used to increase urine formation and output. Diuretics are prescribed for the treatment of edema (the accumulation of excess fluids in the…
Born: 1903 Heart-Lung Machine. Gibbon's development of the heart-lung machine made possible the first successful open-heart operation in 1953. Improved versions allow surgeons today to perform…
(Encyclopedia) hypertension or high blood pressure, elevated blood pressure resulting from an increase in the amount of blood pumped by the heart or from increased resistance to the flow of blood…
(Encyclopedia) nicotine, C10H14N2, poisonous, pale yellow, oily liquid alkaloid with a pungent odor and an acrid taste. It turns brown on exposure to air. Nicotine, a naturally occurring constituent…
(Encyclopedia) Beaverton, city (2020 pop. 99,561), Washington co., NW Oreg., a suburb of Portland, in a farm area; inc. 1893. Beaverton is the heart of…
(Encyclopedia) blue baby, infant born with a congenital heart defect that causes a bluish coloration of the skin as a result of cyanosis (deoxygenated blood). The color is most noticeable around the…
(Encyclopedia) Chaudière Falls, in the Ottawa River in the heart of the city of Ottawa, Ont., Canada. The river is narrowed by rocky cliffs to a width of c.200 ft (60 m) and drops 50 ft (15 m) in a…
(Encyclopedia) coronary artery disease, condition that results when the coronary arteries are narrowed or occluded, most commonly by atherosclerotic deposits of fibrous and fatty tissue. Coronary…
