stroke

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stroke,

destruction of brain tissue as a result of intracerebral hemorrhage or infarctioninfarction,
blockage of blood circulation to a localized area or organ of the body resulting in tissue death. Infarctions commonly occur in the spleen, kidney, lungs, brain, and heart.
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 caused by thrombosisthrombosis
, obstruction of an artery or vein by a blood clot (thrombus). Arterial thrombosis is generally more serious because the supply of oxygen and nutrition to an area of the body is halted.
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 (clotting) or embolusembolus
, foreign matter circulating in and obstructing a blood vessel. It may be a portion of a clot that has separated from the wall of a vessel (see thrombosis), a bubble of gas or air (known as an air embolus), a globule of fat, a clump of bacterial matter, or a clump of
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 (obstruction in a blood vessel caused by clotted blood or other foreign matter circulating in the bloodstream); formerly called apoplexy. Cerebral hemorrhage or thrombosis occurs most often in elderly persons with constricted arteries (see arteriosclerosisarteriosclerosis
, general term for a condition characterized by thickening, hardening, and loss of elasticity of the walls of the blood vessels. These changes are frequently accompanied by accumulations inside the vessel walls of lipids, e.g.
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), although either may also be caused by inflammatory or toxic damage to the cerebral blood vessels. Cerebral embolism may occur at any age, even in children.

Symptoms of stroke develop suddenly. In cases of severe brain damage there may be deep coma, paralysis of one side of the body, and loss of speech, followed by death or permanent neurological disturbances after recovery. If the brain damage sustained has been slight, there is usually complete recovery, but most survivors of stroke require extensive rehabilitation. Hypertensionhypertension
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 through the small arterial blood vessels (arterioles).
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, which is a major cause of intracranial hemorrhage and stroke, can be treated by preventive measures using diet (e.g., increasing nutrients such as antioxidants and folate), drug therapy, and stress reduction techniques. Other preventive measures for people at high risk include daily aspirin to retard clot formation and surgical correction of the narrowed carotid artery. Sometimes surgical removal of the clot is possible on larger vessels, but it is usually pointless after the stroke or when blockage is widespread. The thrombolytic drugthrombolytic drug
or clot-dissolving drug,
substance, such as streptokinase or tissue plasminogen activator (tPA), that causes the breakdown of blood clots (see thrombosis) that obstruct the flow of blood through the vessels.
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 tissue plasminogen activator, widely used to treat heart attacks, has been approved for use within three hours of the onset of strokes caused by clots.

stroke

[strōk]
(computer science)
In optical character recognition, straight or curved portion of a letter, such as is commonly made with one smooth motion of a pen. Also known as character stroke.
That segment of a printed or handwritten character which has been temporarily isolated from other segments for the purpose of analyzing it, particularly with regard to its dimensions and relative reflectance. Also known as character stroke.
(electronics)
The penlike motion of a focused electron beam in cathode-ray-tube diplays.
(mechanical engineering)
The linear movement, in either direction, of a reciprocating mechanical part. Also known as throw.
(medicine)
A sudden cerebrovascular accident.

stroke

strokeclick for a larger image
The linear distance the piston moves inside the cylinder from top to bottom in a reciprocating engine.

stroke

1. Pathol apoplexy; rupture of a blood vessel in the brain resulting in loss of consciousness, often followed by paralysis, or embolism or thrombosis affecting a cerebral vessel
2. a pulsation, esp of the heart
3. Sport the act or manner of striking the ball with a racket, club, bat, etc.
4. any one of the repeated movements used by a swimmer to propel himself through the water
5. a manner of swimming, esp one of several named styles such as the crawl or butterfly
6. 
a. any one of a series of linear movements of a reciprocating part, such as a piston
b. the distance travelled by such a part from one end of its movement to the other
7. a single pull on an oar or oars in rowing
8. manner or style of rowing
9. the oarsman who sits nearest the stern of a shell, facing the cox, and sets the rate of striking for the rest of the crew
www.neuro.wustl.edu/stroke
http://209.107.44.93/NationalStroke/default.htm

stroke

The oblique stroke character, "/", ASCII 47.

See ASCII for other synonyms.

stroke

(1) In printing, the weight, or thickness, of a character. For example, in the LaserJet, one of the specifications of the font description is the stroke weight from lightest to boldest. See stroke weight.

(2) In computer graphics, a pen or brush stroke. The stroke function lets you set the width of the line being drawn.
References in periodicals archive ?
MAGICAL MOISTURISERS: Every girl knows that the key to strokeable skin is to moisturise.
Brocade, suede and faux fur look and feel sumptuous and strokeable - and are perfect for getting the winter look.
Night time is the best time to treat them - simply apply the cream liberally, and wear some cotton gloves or socks over the top for strokeable skin.
A new waxwork of the Hollywood star has gone on display at Madame Tussauds in central London and the open-shirted model of the movie hunk features a strokeable chest.
Now they have modern strokeable, soft- pile versions which look wonderful used as accents in stripes or in cushions.
We have 60 Ready Steady Go Kits from Nair, each worth pounds 35, containing Nair Glide On's mess-free, fuss-free applicator with added skin-caring ingredients which work fast to remove hair below the skin's surface, leaving your legs very strokeable, Mrs.
So the rest of your body is not left behind, YSL has also launched Hydratant Mineral, a combination of water and minerals to leave all of your skin soft, supple, and of course beautifully strokeable.
FAMILY SHOW THERE'S sheep, sniffable herbs, strokeable grassy benches and bubbles along the way in In A Pickle.
Stock up all the comforts you'll need in a Highland home ( huge cable knitted throws and strokeable cushions will help you hibernate and you will even be able to coordinate with a hand knitted hot water bottle.
For something with a slight twist, take a look at Oasis' embellished pirate off-white jacket, pounds 65CREAM OF THE CROP Strokeable and soft velvet is one of the popular textiles this season: combine velvet and teal with Gap's Romantic velvet teal blazer, pounds 55, Marks & Spencer's teal velvet jacket, pounds 65, and Next's midnight blue velvet blazer, pounds 54.