ABSTRACT
Syncope is sudden, brief loss of consciousness due to transient impairment of cerebral circulation, from whatever cause, usually occurring in the absence of organic brain disease or cerebrovascular disease. Typically the onset is sudden or develops over a few seconds with blurred vision, dizziness, cold extremities and sweating. If aware of the symptoms the patient may take evasive action and sit or lie down. If however, venous return remains impaired, muscle twitching and convulsions (convulsive syncope) may occur.
