What type of stroke is characterized by a clot obstructing a blood vessel in the brain?

The term used to describe a stroke that occurs due to a clot obstructing a blood vessel in the brain is ischemic stroke. This type of stroke is the most common, making up about 87% of all strokes. When a clot forms in a blood vessel or when a piece of plaque breaks off and travels to the brain, it can obstruct blood flow, depriving brain tissue of oxygen and nutrients. This can lead to cell death and resulting neurological deficits.

In contrast, a hemorrhagic stroke occurs when a blood vessel in the brain ruptures, leading to bleeding within or around the brain, while a transient ischemic attack (TIA) is often called a mini-stroke and involves temporary blockage of blood flow, causing symptoms that resolve within 24 hours. Cerebral venous sinus thrombosis refers specifically to a clot in the brain's venous system, which can lead to increased intracranial pressure rather than the immediate effects of an arterial blockage seen in ischemic strokes. Understanding these distinctions is vital for appropriate emergency response and treatment.