Definition, etiology, and clinical manifestations of transient ischemic attack
- Karen L Furie, MD, MPH
Karen L Furie, MD, MPH
- Chair and Professor of Neurology
- Alpert Medical School of Brown University
- Hakan Ay, MD
Hakan Ay, MD
- Stroke Service, Department of Neurology
- A.A. Martinos Center for Biomedical Imaging, Department of Radiology
- Massachusetts General Hospital
- Harvard Medical School
Cerebrovascular disease is caused by one of several pathophysiologic processes involving the blood vessels of the brain:
●The process may be intrinsic to the vessel, as in atherosclerosis, lipohyalinosis, inflammation, amyloid deposition, arterial dissection, developmental malformation, aneurysmal dilation, or venous thrombosis.
●The process may originate remotely, as occurs when an embolus from the heart or extracranial circulation lodges in an intracranial vessel.
●The process may result from inadequate cerebral blood flow due to decreased perfusion pressure or increased blood viscosity.
●The process may result from rupture of a vessel in the subarachnoid space or intracerebral tissue.
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- DEFINITION OF TIA
- Symptom duration and infarction
- CLINICAL MANIFESTATIONS AND MECHANISMS
- Low-flow TIA
- Embolic TIA
- Lacunar or small vessel TIA
- Typical TIA
- Atypical TIA
- HIGH-RISK LESIONS
- Internal carotid artery TIA
- Intracranial atherothrombotic disease
- Arterial, aortic, or cardiac sources of emboli
- Dissection lesions
- URGENCY OF EVALUATION
- INFORMATION FOR PATIENTS
- SUMMARY AND RECOMMENDATIONS