Symptoms Of Cerebrovascular Disease

Tuesday, August 2, 2011

A cerebrovascular accident is clear if the victim displays the following symptoms: dizziness, nausea, vomiting, severe headaches, head pressure, numbness in limbs, slurred speech, loss of vision, loss of coordination and the ability to walk. Hemorrhagic stroke may require surgery to relieve pressure in the brain. Other treatments, endovascular treatment, requires insert a tube into the main artery.

According to the National Stroke Association (1999), strokes often occur suddenly, with the following symptoms that often appear suddenly:

• Difficulty standing or walking, dizziness, loss of balance, loss of coordination
• Numbness in facial weakness, arm or leg, especially on one side of the body
• Confusion, difficulty speaking or understanding
• Vision difficulties in one or both eyes
• Severe headache with no known cause

Another important symptom of stroke, but less common include:

• Nausea, fever, and vomiting that is different from viral disease in the speed of onset (starts in minutes or hours, not days)    
• Retinal effects of the carotid artery, hemispheric, or both.
• Transient suppression of the retina, a sense of calm that is pulled over the eyes.
• Cerebral palsy contralateral (opposite side) of a single body part, paralysis of one side of the body, tingling numbness, local; hemianopic visual loss; aphasia (loss of speech), loss of consciousness rare.
• Vertebrobasilar bilateral visual disturbances including the dim, gray, or blurred vision or temporary blindness; diplopia (double vision).
• Labyrinth / Vertigo medulla; unsteadiness, nausea, vomiting.
• Brain stem slurring dysarthria (weakness of the tongue causes the speech), dysphagia (difficulty swallowing), numbness, weakness; fourth limb paresthesia: a reduction in attacks of sudden loss of postural tone in the basilar origin; episodes of vertebrobasilar artery occlusion causes symptoms that would be caused by suddenly changed position.

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Cause Of Cerebrovascular Disease

In the healthy structure of the anatomy, the carotid artery to form the main blood supply to the brain. After control, stroke of the voluntary muscles may be lost, depending on the type of stroke victims are facing. Stroke can also occur due to embolism or due to rupture of blood vessels. Emboli block small arteries in the brain, causing dysfunction occurs. Spontaneous rupture of blood vessels in the brain causing a hemorrhagic stroke.

Other forms of cerebrovascular disease including aneurysms. In women with damaged collagen, weak branching points of arteries causing a bulge with a very thin cover that can tear the endothelium to bleed easily with a minimal rise in blood pressure. It can also occur with defects caused by the deposition of cholesterol mainly in the capillary network of hypertensive subjects with or without dyslipidemia. If the bleeding occurs in this process, the resulting effect is a hemorrhagic stroke in the form of subarachnoid hemorrhage, intracerebral hemorrhage or both.

In the main structure, the carotid artery disseminate part of the cerebrum. Common carotid artery divides into internal and external cartoid arteries. Internal carotid artery into the anterior cerebral artery and middle central artery. ACA sends blood to the frontal and parietal a small part of the occipital lobe. MCA is the largest branch of the internal carotid artery. From artery Basillar two posterior cerebral arteries. Branch Basillar and PCA supplies the occipital lobe, brainstem, and cerebellum.

Ischemia is the loss of blood flow to the focal area of ​​the brain. This initial process is quite fast. The duration of a stroke is usually 2-15 minutes. One side of the face, hand, or arm may swell. During this time, people can lose control of the conscious and unconscious. Brain deficit may increase for a maximum of 72 hours. Deficits are not complete in all cases. Including stable neurologic recovery period, to enhance, brain function. Stable is the period in which no re-supply of nutrients, is also not lost. Increase, depending on the code of the hospital, generally means that the gain control and function of arterial blood flow in the brain consistent. Cartoid arteries connected to the vertebral arteries. It branched out into meningenial cerebellar artery and posterior, which supplies the back of the brain.

Also, during ischemia, interneurons weaken, causing the amount sufficient to perform an important function to attend. The neuroglis become congested or maintain the loss for cerebrovascular accident. If the number of impulses cease, then life itself would cease and the victim may have entered the stage of clinical death. Weakened nerve pathways, thereby reducing action potential. Neural arc, which generally consists of sensory and motor neurons, also weakened. The muscles become paralyzed, in some cases for life. Paralysis also includes a weakening of receptors in the body, except for improvements made. Cerebrovascular damage to the brain is what makes it difficult for the receptors to receive and transmit impulses of neurons. Chemical reaction is then transmitted to the body creates poor reflexes. Meninges which also protects the brain and spinal cord are very weak, allowing the victim to suffer a large transmission of disease or unstable growth or maintenance if the victim is not in a resting position.

During the stage of paralysis, spinal canal is not much to do with the eternal condition of cerebrovascular disease, both in time can shorten the life of a victim who suffered due to supply nutrients that are weakened in the transmission during cerebrovascular disease. Descending and up the channel will generally be cut during cerebrovascular disease, which does impulses down the wire the brain. This is known as an anesthetic in minor cases.

In a healthy body, cerebrospinal fluid (also known as CSF) can also weaken cortoid plexus, the capillary network of the brain. Some types of hydrocephalus ("water" or CSF in the brain) can be treated using shunt or brain shunt, which involves inserting a hollow tube (or shunt) through clogged channels so that CSF can be used to dry the other parts of the body. The skin surface area of ​​the dermatome is regulated by the spinal cord. During a stroke, it may be damaged.

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Cerebrovascular Disease

Cerebrovascular disease is a group of brain dysfunction associated with the disease the blood vessels supplying the brain. Hypertension is the most important causes, but damage the lining of blood vessels, the endothelium, exposing the underlying collagen to which platelets aggregate to begin the repair process is not always complete and perfect. Hypertension is sustained permanent architectural changes of the blood vessels making them narrower, stiff, deformed, uneven and more susceptible to fluctuations in blood pressure.

Decrease in blood pressure during sleep can lead to a marked reduction of blood flow in the narrowed blood vessels causing ischemic stroke in the morning. Conversely, a sudden increase in blood pressure due to the excitation during the day can cause tearing of the blood vessels so that the intracranial hemorrhage. Cerebrovascular disease mainly affects people who are elderly or have a history of diabetes, smoking, or ischemic heart disease. The results of cerebrovascular disease can include stroke, or sometimes hemorrhagic stroke. Ischemia or other vascular dysfunction can affect a person for cerebrovascular accident.

Each year, an estimated 158,000 people in the United States died from cerebrovascular disease. An estimated 30,000 people in the United States experienced a ruptured brain aneurysm, and to 6 percent of the population may be living with unruptured aneurysms. Aneurysms occur in all age groups, but the incidence continues to increase for individuals age 25 and older. Ruptured aneurysms are most prevalent at ages 50 to 60 people and about three times more common in women. Ruptured brain aneurysms are fatal about 50 percent of the time.

A form of cerebral aneurysm from weaker sections of the walls of blood vessels, resulting in a bulging or ballooning out of part of the vessel wall. Usually, aneurysms develop at the point where the branches of blood vessels, because the 'fork' is structurally more vulnerable. The disorder can result from congenital defects or from other conditions such as high blood pressure atherosclerosis (the build-up of fatty deposits in arteries), or head trauma. People who suffer from ruptured brain aneurysm (subarachnoid hemorrhage) may have warning signs such as severe headache, nausea or vomiting, stiff neck, blurred or double vision, sensitivity to light (photophobia), and loss of sensation. Unruptured aneurysms, however, may be asymptomatic.

Actress Sharon Stone underwent treatment in October 2001, at age 43, for subarachnoid hemorrhage. In the case of Stone, the bleeding was actually caused by vertebral artery dissection (VAD) at the base of his skull, rather than ruptured aneurysms. The symptoms and the results were virtually identical to those with ruptured aneurysms, excruciating headaches and bleeding into the brain. Occurs only about one in 10,000 people, VADs are 10 times rarer than brain aneurysm. VADs are caused by a tear in the lining of the vertebral artery.

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