Transient Ischemic Attack - Oren Zarif - Transient Ischemic Attack
A transient ischemic attack is a sudden, brief event that results from ischemia in the brain or spinal cord. Although this type of stroke is not usually fatal, it may be a symptom of a underlying problem. Although these attacks usually do not cause long-term disability, they are also a sign of future strokes. Fortunately, TIAs do not usually require emergency medical attention.
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The exact cause of a TIA varies depending on the type of TIA, but they all have the same problem. The ischemic interruption of arterial blood flow is the common thread that links all types of TIAs. Large artery atherothrombosis, a cause of TIA, may occur extracranially or intracranially. Similarly, small vessel ischemic diseases may be caused by lipohyalinosis or arteriosclerosis of the small vessels. High blood pressure, age, and family history are all common risk factors for TIAs. Finally, atrial fibrillation, a heart rhythm disorder, may contribute to TIAs.
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Recent scientific studies have improved our understanding of transient ischemic attack (TIA) and the risk of stroke from TIA. The new definition of the condition is based on tissue-based evidence synthesis and a systematic review of published research in the field from 1990 to June 2007. The new definition supports a tissue-based definition of TIA. TIAs are associated with increased risk of early stroke, which can be determined by using a clinical scale, a diffusion magnetic resonance imaging, or a blood sample.
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Treatment for TIAs focuses on reducing the short and long-term risks of an attack. Surgical procedures such as carotid endarterectomy may be considered when the narrowing of the carotid artery in the neck is severe enough to limit blood flow to the brain. During a carotid endarterectomy, the affected artery is opened up and plaque is removed. The surgery can last one or two hours and is performed under general anesthesia.
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If you have experienced any of these symptoms, you should seek medical treatment immediately. Your doctor may order diagnostic tests and refer you to a neurologist. An ultrasound of the neck may be necessary to look for blocked blood vessels. It is best to go to an ER for immediate medical care if TIA symptoms persist. A TIA may be a symptom of a larger health issue, such as a heart condition or an underlying condition.
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A TIA occurs when there is a blockage or burst in the artery carrying oxygenated blood to the brain. When the brain is deprived of oxygen, brain cells die. This is a transient ischemic attack (TIA). Unlike a stroke, a TIA does not cause permanent damage to brain cells. This is the reason for its similarity to a stroke. The symptoms, however, may be different.
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While the new definition of TIA is based on all available information, it does not restrict clinical evaluation to the presence of blood clots. Diagnostic tests are essential in determining the presence of hemorrhagic and ischemic brain infarctions, and imaging studies play a central role in classifying acute cerebrovascular syndromes. However, TIA diagnosis requires more detailed imaging studies. If an MRI is positive, the diagnosis will be based on clinical findings and imaging.