syncope
Pronunciation: SIN-ko-pee
Temporary loss of consciousness due to inadequate cerebral blood flow, commonly called fainting.
Full Definition
Syncope is a transient loss of consciousness and postural tone caused by cerebral hypoperfusion, with spontaneous recovery typically occurring within minutes. It differs from other causes of altered consciousness by its rapid onset, brief duration, and complete recovery without intervention. Syncope can be classified into neurally mediated (vasovagal), orthostatic, or cardiac causes. Cardiac syncope is particularly concerning as it may indicate serious underlying heart disease such as arrhythmias, structural abnormalities, or ischemia. Proper evaluation includes detailed history, physical examination, ECG, and sometimes additional cardiac testing.
Usage
Usage note: Distinguish from presyncope (near-fainting) and other causes of altered consciousness.
In Context
- "The patient experienced recurrent syncope episodes prompting cardiac evaluation." — Cardiology consultation note
- "Syncope in elderly patients requires careful assessment for underlying cardiac causes." — Clinical guideline