Topic: fainting


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fainting

The Columbia Encyclopedia, Sixth Edition
fainting or syncope , temporary loss of consciousness caused by an insufficient supply of oxygen to the brain. It can be concurrent with any serious disease or condition, such as heart failure, hypertension (high blood pressure), arrhythmia , hemorrhage , injury to the brain or other organs, or poisoning. Less serious conditions can also cause fainting, e.g., fatigue, prolonged standing, getting up after long confinement to bed, pain, hunger, dehydration, anemia, or fright or other emotional disturbance. Loss of control of blood pressure can be detected with the tilt test. Such ... Read more
Fainting (Syncope)
Complete Human Diseases and Conditions Fainting (Syncope) Fainting is a brief loss of consciousness caused by a temporary drop in blood ... at a circle of concerned faces. Sixty-year-old Reno had just had a fainting spell, her second in less than a year. The September 1998 incident ... Read more
fainting
World Encyclopedia fainting (syncope) Temporary loss of consciousness accompanied by general weakness of the muscles. A faint may be preceded by giddiness, nausea and sweating. Its causes include insufficient flow of blood to the brain and shock. Read more

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