Final answer:
Strokes from cerebral vein thrombosis involve venous clots which increase pressure, while arterial thrombosis or embolism causes ischemic strokes due to blocked arteries. Hemorrhagic strokes result from ruptured arteries. Quick intervention is crucial, as treatments like rtPA can dissolve clots and improve outcomes.
Step-by-step explanation:
Strokes caused by cerebral vein or venous sinus thrombosis differ from strokes caused by arterial embolism or thrombosis in that venous thrombosis involves clotting in the veins that prevents blood from draining out of the brain. This can lead to increased pressure in the brain's veins, which can cause hemorrhage and brain tissue damage. In contrast, arterial thrombosis or embolism leads to the loss of blood flow to a specific area of the brain because the arteries are blocked or narrowed, often by an embolus like a blood clot or fat deposit.
Ischemic strokes, accounting for almost 90% of cases, occur when a blood clot obstructs an artery leading to the brain, resulting in a lack of oxygen and causing death of brain cells. Hemorrhagic strokes, on the other hand, are caused by the rupture of an artery within the brain, which can be fatal.
Identifying and treating a stroke quickly is vital, with treatments like recombinant tissue plasminogen activator (rtPA) being able to help by dissolving the clot and restoring blood flow, particularly in ischemic stroke cases where tissue may be salvageable. It's also important to distinguish these events from transient ischemic attacks (TIAs), often referred to as 'mini-strokes,' which occur temporarily and do not cause permanent brain damage.