occlusive stroke

An occlusive stroke occurs when a blood vessel supplying the brain becomes blocked. These strokes are categorized into four types: transient ischemic attacks (TIAs), which have brief symptoms; reversible ischemic neurological deficits, with symptoms lasting up to three weeks; evolving strokes, characterized by progressive deterioration; and completed strokes, resulting in brain tissue death due to severe blood starvation. Atherosclerosis, the hardening and narrowing of arteries, is a primary cause, leading to plaque buildup, vessel narrowing, or complete blockage. Other causes include inflammation, spasm, injury, or emboli from the heart or neck arteries.1

Complications of atherosclerosis, including occlusive disease, are a significant cause of death. Atherosclerosis can lead to arterial dilation (aneurysms) or calcification, increasing blood pressure and the risk of heart failure and stroke. Chronic occlusive disease develops gradually, while acute occlusions occur rapidly, often due to blood clots forming on atherosclerotic plaques, leading to tissue damage if not promptly treated. Treatment for chronic occlusive disease involves opening or bypassing blocked vessels through procedures like atherectomy, bypass surgery, or angioplasty with stenting. Acute occlusions are treated with clot-dissolving drugs or angioplasty, with time being critical for restoring blood flow and preventing irreversible damage.23