Ischemic Stroke

Ischemic Stroke, Ischemic Infarct and Ischemic Treatment

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What causes an Ischemic Stroke

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The most common type of stroke is the ischemic stroke. It involves the constriction of the blood supply to the brain, which reduces the oxygen that gets to the brain cells. A cerebral infarction may occur from a burst or leaking blood vessel or a blocked artery.

Cerebral infarctions are caused by different types of diseases. A common problem of the condition is the restricting of the arteries in the head or neck. This reaction usually occurs from gradual cholesterol deposition or atherosclerosis.

If the arteries become too restricted, then blood cells can accumulate and form blood clots. Blood clots can dislodge and get trapped within the arteries that are close to the brain. They can also block arteries within the vicinity.

Coagulation in the heart is another cause. This condition can be the result of irregular heartbeat, deformities of the heart valves or a heart attack. These conditions are the most common types of cerebral infarctions, but there are other causes. Examples are blood clotting disorders, traumatic injury to the blood vessels in the neck and street drugs.

A number of factors can cause a cerebral infarction. Thrombosis is a common form of the condition. It happens when a blood clot cuts off or restricts the blood flow to the brain. This condition can take time and build up gradually, which slowly decreases blood flow.

An attentive medical physician can detect the early signs of thrombotic stroke and take the steps to prevent it. A number of diseases and conditions cause blood clots to form in different sizes. They can be large and small. Some patients take blood thinners as a precaution to stop blood clots from forming.

Embolism is another event that causes an ischemic stroke. It happens when a piece of debris or blood clot breaks off and enter the blood stream, which results in blocking the blood flow. A cerebral infarction bought on by embolism occurs very rapidly. It is also important to determine the origination of the embolism to prevent another stroke.

Embolism is normally caused by blood clots, but chunks of matter are another cause. Chunk of matters may consist of cancerous cells, bacteria, plaque from infectious arteries, fat and broken bone marrow. Heart related incidents are another culprit and reduces blood flow to all parts to the body.

A cerebrovascular accident (CVA) affects children and people of all ages. Many people who have cerebral infarctions are between the ages of 60 and older. The risk of a CVA also increases with age.What causes an Ischemic Stroke

African Americans are the most common ethnic group affected by this condition. There are also more women than men being diagnosed with having strokes each year. Patients who usually develop a cerebral infarction have other health problems. These health problems put them at a higher risk of having a stroke. Example conditions are heart disease, hypertension, diabetes or smoking.

The best treatment is prevention. Unhealthy habits and certain diseases increase chance of having a CVA. It is important to have a doctor check for high blood pressure because patients usually do not experience symptoms. Living a healthy lifestyle and regular doctor visits are ways to prevent or catch an ischemic stroke in the early stages.

Types of Ischemic Stroke?

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Ischemic stroke is caused by an obstruction in one of the blood vessels in the brain. There are two types of this classification of stroke, and two types of conditions that are similar to this type of stroke.

As mentioned above, ischemic stroke is caused by a blockage in one of the blood vessels leading to the brain. This blockage is generally a blood clot, and is further identified by where the blood clot develops in the body. When the blood clot develops at the site of an obstruction caused by atherosclerosis, the fatty deposits that can develop along the walls of blood vessels, this is called cerebral thrombosis. When the blood clot develops elsewhere in the body and breaks loose, it travels through the blood stream until it reaches blood vessels too narrow to pass. This is referred to as cerebral embolism.

Cerebral thrombosis is also referred to as thrombotic stroke. The underlying condition for this type of ischemic stroke is typically atherosclerosis and its build up of fatty deposits along the walls of the blood vessels. This causes blood vessels to become narrow and restricted. This can severely restrict blood flow to an area of the body. Blood clots can begin to form along these deposits. This type of blood clot is known as a thrombus. If the blood clot develops enough to completely cut off the flow of blood through the affected blood vessel, this results in a cerebral thrombosis, or thrombotic stroke.

Cerebral Embolism is also referred to as embolic stroke. When a blood clot, or embolus, forms in another part of the body then breaks loose and travels to the brain, this is an embolic stroke. This type of stroke often occurs due to heart disease or heart surgery. There is little or no warning before this happens, as the blood clots, or parts of these clots, breaks loose. These pieces of blood clot travel through blood vessels into the brain until they reach blood vessels that are too small to pass through, where they become lodged and block blood flow. This results in a stroke.Types of Ischemic Stroke?

Two conditions that are similar to stroke and very frequently lead to stroke are silent cerebral infarction, and transient ischemic attack. These both can be considered types of smaller stroke as they block blood flow, though depending on which condition is involved, blood flow is blocked to a very small area, or blood flow is blocked for a short amount of time.

Silent cerebral infarction is also referred to as silent stroke or lacunar infarction. Blood flow is blocked in very small arterial vessels, leading to damage of a small area of the brain. Over time, this leaves the presence of a small hole or empty area of the brain. This silent stroke can occur in many areas of the brain, leading to brain damage or a full scale stroke.

Transient ischemic attack is often referred to as a mini stroke, as a temporary blood clot stops blood flow in the brain for a short period of time. These mini strokes should be a cause for concern, as they are precursors for a full blown stroke.

Ischemic Stroke Treatment

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Approximately 700,000 stokes occur every year in the United States and most of them are caused by ischemia, a blockage in the blood vessel that stops the blood flow to a portion of the brain. Usually, fatty deposits or a blood clot moves through the blood vessels and becomes lodged in a tiny vessel of the brain. This condition is known as ischemic stroke and may be fatal if not treated immediately. It is imperative to be aware of the signs and symptoms and to report the event without delay to an emergency response system. Ischemic stroke treatment is required quickly for a good prognosis and to prevent further damage to the brain.

Signs and Symptoms of Stroke

People who are experiencing a stroke may complain of a severe headache or an intense pressure in an area of their head. Depending on the part of the brain affected, additional symptoms may include:Ischemic Stroke Treatment

• Drooping of one side of the face including the eye and mouth
• Loss of sensation or the ability to stand on one or both legs
• The inability to raise one or both arms above the head
• Confusion and agitation
• Loss of consciousness

Ischemic Stroke Treatment with Medication

Treatment of stroke must be performed as an emergency and the victim must receive professional medical care as soon as possible. The longer the brain is deprived of oxygen, the greater amount of injury will be sustained. The treatment is largely dependent on the history, physical condition and the medications the patient has been taking. Most often, the physician elects to use a clot dissolving medication that is injected into the vein with the goal to remove the blockage quickly and without incidence. These medications are potentially harmful and the patient must be monitored in an intense care situation for adverse effects of the injection.

Surgical Interventions for Ischemic Stroke Treatment

If the blockage to the brain is not resolved with medications, the physician may refer the patient to a neurosurgeon for the surgical removal of the blood clot or blockage. The patient is prepped quickly and the surgeon removes the blockage with the guidance of CT scan imagery and MRI assistance. The patient is taken to the intensive unit for post-surgical care and is monitored closely for adverse effects of brain injury and the effectiveness of the surgical procedure.

Prognosis of Ischemic Stroke

Recent technology and the new development of treatments and surgical procedures have improved the outlook and prognosis for stroke markedly. Victims who receive treatment early usually have better outcomes.