What is a occlusive stroke?
In nervous system disease: Occlusive strokes. Occlusive strokes, those in which a blood vessel supplying a part of the brain is blocked, are divided into four groups: (1) Transient ischemic attacks (TIAs) are the mildest occlusive strokes; symptoms last for minutes or hours.
What causes an occlusive stroke?
Ischemic strokes occur when blood supply is cut off to part of the brain. This type of stroke accounts for the majority of all strokes. The blocked blood flow in an ischemic stroke may be caused by a blood clot or by atherosclerosis, a disease which causes narrowing of the arteries over time.
What is the difference between ischemic stroke and hemorrhagic stroke?
An ischemic stroke occurs when a blood vessel supplying the brain becomes blocked, as by a clot. A hemorrhagic stroke occurs when a blood vessel bursts, leaking blood into the brain.
What is the difference between ischemic and hemorrhagic stroke?
What is CT stroke protocol?
A CT stroke protocol is obtained in the emergency setting to rapidly diagnose and quantify patients presenting with probable ischemic strokes and to enable appropriate urgent management (e.g. endovascular clot retrieval or intravenous thrombolysis).
Is there a clinical score for large vessel occlusion in stroke?
To date, no clinical score has become widely accepted as an eligible prehospital marker for large vessel occlusion (LVO) and the need of mechanical thrombectomy (MT) in ischemic stroke.
Does CT angiography add clinical value in the assessment of acute stroke?
7 EzzeddineMA, Lev MH, McDonald CT, et al. CT angiography with whole brain perfused blood volume imaging: added clinical value in the assessment of acute stroke. Stroke2002; 33: 959–966. Crossref, Medline, Google Scholar
How is perfusion CT used to diagnose stroke?
Perfusion CT can help distinguish the penumbra from infarcted tissue in acute stroke patients. Several studies have shown that the CBV map depicts the lesions seen at diffusion MR imaging, helping predict the infarcted brain tissue that is not salvageable despite reperfusion (,30,,31).
What is an LVO stroke?
LVO was defined as occlusion of the internal carotid artery and of proximal segments (M1, M2) of the middle cerebral artery. All patients with suspicion of cerebral stroke admitted to our emergency department (seen primarily by a neurologist, present 24/7) in 2015 and arriving within the time frame of 4.5 hours were included (group A).