What is transient ischemic attack (TIA) or mini stroke?
A transient ischemic attack (TIA) is often called a mini stroke. A transient ischemic attack (TIA) is a transient stroke that lasts only a few minutes. It occurs when the blood supply to part of the brain is briefly interrupted. TIA symptoms, which usually occur suddenly, are similar to those of stroke but do not last as long. Most symptoms of a TIA disappear within an
hour, although they may persist for up to 24 hours.
Transient ischemic attacks (TIAs) are a condition related to strokes. A TIA is a "mini" ischemic stroke that lasts only a few minutes. It occurs when the blood supply to the brain is temporarily interrupted. TIA symptoms, which usually occur suddenly, are similar to those of a full-blown ischemic stroke, but they don't last as long. Most symptoms of a TIA disappear within an hour, although they may persist for up to 24 hours. Symptoms of a TIA can include sudden difficulty with vision, speech, behavior, and thought.
TIAs occur before an ischemic stroke in about 60% of cases, and 35% of untreated patients will develop a stroke within 5 years of a transient ischemic attack. The greatest risk for stroke is early, within the first year after the TIA, with about 20% occurring within the first month after the TIA and 50% within the first year after the TIA. The more frequently TIAs occur, the higher the possibility of stroke.
Symptoms can include: numbness or weakness in the face, arm, or leg, especially on one side of the body; confusion or difficulty in talking or understanding speech; trouble seeing in one or both eyes; and difficulty with walking, dizziness, or loss of balance and coordination.
Once someone has had a TIA, the aim is to prevent another such episode or a stroke. If you have had a TIA you will usually be prescribed antiplatelet agents, which reduce the blood’s ability to clot. Aspirin is one such agent, but there are others available as well. Many of the treatment measures recommended for people with coronary artery disease are also effective at reducing the risk of TIA and stroke. Some people who have had a TIA must have a surgical procedure called an endarterectomy. In this operation, atherosclerotic deposits are removed from the patient’s neck artery to improve blood flow to the brain.
More information on the stroke
What is a stroke? - Stroke (cerebrovascular accident) is a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain.
What're the different types of strokes? - There are two main types of stroke. Ischemic stroke is the most common type of stroke. Hemorrhagic stroke is caused by bleeding.
What is ischemic stroke? - Ischemic stroke is the most common type. Ischemic stroke can further be divided into two main types: thrombotic and embolic.
What is a thrombotic stroke? - Thrombotic strokes are strokes caused by a thrombus (blood clot) that develops in the arteries supplying blood to the brain.
What is an embolic stroke? - Embolic strokes often result from heart disease or heart surgery and occur rapidly and without any warning signs.
What's transient ischemic attack (TIA) or mini stroke? - A transient ischemic attack (TIA) is often called a mini stroke. A transient ischemic attack (TIA) is a transient stroke that lasts only a few minutes.
What is hemorrhagic stroke? - In hemorrhagic stroke, bleeding in the brain itself or between the brain and the skull (subarachnoid hemorrhage) disrupts brain function.
What is an intracerebral hemorrhage? - Intracerebral hemorrhage is usually caused by hypertension (high blood pressure), and bleeding occurs suddenly and rapidly.
What is a subarachnoid hemorrhage? - Subarachnoid hemorrhage results when bleeding occurs between the brain and the meninges in the subarachnoid space.
What causes a stroke? - Stroke caused by damage to blood vessels in the brain. The ischemic stroke is usually caused by atherosclerosis (hardening) of blood vessels.
What are the symptoms of a stroke? - The symptoms of a stroke depend on what part of the brain and how much of the brain tissue is affected. Stroke symptoms usually come on suddenly.
What are the risk factors for a stroke? - Risk factors for a stroke include high blood pressure (hypertension), atherosclerosis, cigarette smoking, atrial fibrillation, diabetes.
How is a stroke diagnosed? - Stroke is diagnosed through several techniques: a short neurological examination, blood tests, CT scans or MRI scans, Doppler ultrasound, and arteriography.
What's the treatment for a stroke? - The aim of the therapy is to minimise the size of the stroke and therefore minimise subsequent disability by restoring blood flow to the area of the brain affected quickly.
What medications can be used for stroke treatment? - Intravenous thrombolytics. clot-busting, or thrombolytic drugs are now administered intravenously for ischemic (not hemorrhagic) stroke.
What can be done to prevent a stroke? - Prevention of stoke is an important public health concern. Medication or drug therapy is the most common method of stroke prevention.
What're the surgical treatments for stroke? - Surgical treatments for stroke include carotid endarterectomy, angioplasty, clipping. Clipping involves clamping off the aneurysm.
How to recover from a stroke? - Spontaneous recovery accounts for most improvements in the first month after a stroke. Successful recovery after a stroke depends on the extent of brain damage.
What is stroke rehabilitation? - Stroke rehabilitation is the process by which patients with disabling strokes undergo treatment to help them return to normal life.