About: A silent stroke is a stroke that does not have any outward symptoms associated with stroke, and the patient is typically unaware they have suffered a stroke. Despite not causing identifiable symptoms a silent stroke still causes damage to the brain, and places the patient at increased risk for both transient ischemic attack and major stroke in the future.

Types Of Silent Strokes:
  •          Ischemic stroke: occurs when a blood vessel supplying blood to the brain becomes blocked. This type of stroke accounts for approximately 87 percent of all stroke cases.
  •          Hemorrhagic stroke: occurs when a blood vessel supplying blood to the brain becomes weakened and ruptures. Typically hemorrhagic stroke is caused by two types of weakened blood vessel: aneurysms and arteriovenous malformations (AVMs).
  •          Lacunar infarcts (LACI) are small (0.2 to 15 mm in diameter) non cortical (does not affect cerebral cortex) infarcts caused by the occlusion of a single penetrating branch of a larger blood vessel that provides blood to the brain's deep structures including the white matter. LACIs are strongly associated with the development of white matter lesions (WML) which can be detected via the use of computerized tomography (CT scans).

Prevention's: Preventive measures that can be taken to avoid sustaining a silent stroke are the same as for stroke. Smoking cessation is the most immediate step that can be taken, with the effective management of hypertension the major medically treatable factor.


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