The brain requires a minimum of 20% of the entire output of fresh oxygenated blood each time the heart beats. It also requires a similar amount of the gluco (blood sugar) that travels within the blood stream. Any disturbances of this blood flow-- even for a few conds-- can have dramatic and long lasting effects. Paralysis of extremities, loss of speech, loss of u of facial muscles, loss of vision, loss of conscious and even death are all potential end results depending upon the area of the brain involved and the extent of the damage.
Stroke is the name given sudden loss of blood flow to the brain. It is often referred to a CVA or Cerebrovascular Accident. When the blood supply to the brain is suddenly impaired the brain and its cells and tissues are damaged. Stroke is the third-leading cau of death in the United States coming only after heart dia and cancer. More than one-fourth of the neurologically impaired patients in nursing homes are stroke victims.
Most commonly the victims of stroke are elderly people with degeneration of the blood vesls entering into the their brains. However, stroke can also occur in young adults and even children.
Stroke usually comes on suddenly however, there are often a number of symptoms which may occur to as prodromal or heralding symptoms (listed below). It then usually progress either rapidly or slowl
y over the next one to two days. During this period, symptoms may come and go, and be irregular or progress steadily to a final conclusion. This period is often referred to as stroke in evolution or the evolution period. When no further deterioration occurs is the stroke considered to be complete. In a few cas' damage may occur in waves over three to ten days and completion may be delayed for up to two or more weeks.
In some cas a sudden stroke is lethal but in most cas the individual survives. In tho individuals who do survive there are varying levels of neurologic and psychologic injury. The damage may be slight and hardly noticed or the individual may be rendered completely brain damaged. Interruption of the blood supply to the brain can cau a significant neurologic deficit but on occasion there can be transient interruption of the blood supply with little or no neurologic deficit this is generally referred to as a TIA or Transient Ischemic Attack. Often injuries are permanent but in many cas they are temporary and in time or with physician therapy normal to near normal function can be obtained.
Approximately 300,000 American men and women suffer strokes each year. Nearly 25% of the people will die of their stroke or from its complications. Stroke is the third leading cau of death in our nation and around the world. The risk of stroke literally doubles each decade after the age of 35
years. Statistics show that nearly 5% people over the age of 65 have had at least one stroke.
In recent years the death rate from stroke has declined by nearly 50 percent the reasons given for this include better nutrition, more exerci, and prompt treatment and incread exposure to information leading to preemptive medical care and prevention.
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Types of Strokes
There are veral different types of strokes. The are primarily dependent on "how" and "why" circulation to the brain becomes impaired. There are two main types which we will discuss here. They are Ischemic Stroke and Hemorrhagic Stroke.
Factors Leading to Stroke
As in most situations there are risk factors that are controllable and there are factors which cannot easily be changed.
Uncontrollable Factors:
走过路过不要错过- Increasing age
糯米粉的做法大全点心- Gender (more men have strokes)
- History of a prior stroke
- Family history of stroke
Controllable Factors:
- High blood pressure-- 70% of all strokes occur in persons with high blood pressure.
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- Atherosclerotic or other forms of heart dia.
- Valvular heart dia or recent heart attack-- are important precursors
- Cigarette smoking
- Elevated cholesterol
- High red blood cell count
- Transient Ischemic Attacks (TIAs) or little strokes
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Women using oral contraceptives tend to have more strokes.
- Diabetes mellitus, if the diabetes itlf can be reasonably well controlled.
Men are more at risk at all ages as compared to women. Young women generally are at low risk, howe What Are the Symptoms of a Stroke?
Warning Signs:
- There may be no warning at all.
- One or more TIAs should always be considered a warning sign.
- Recurrent headaches, naua, dizziness or visual changes may on occasion occur but are often to to definitely indicate that a stroke is coming.
Emergency Symptoms:
美女图片大黄Sudden Ont, or Prodromal Signs and Symptoms which occur before the ont of a stroke or at the imm
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A stroke may be heralded by a mild to incapacitating headaches which may occur gradually or sud - Naua
- Confusion
- Sudden numbness or paralysis, complete or partial, involving the face, arms or legs
- Abrupt loss of consciousness, stupor or coma.
Early Signs and Symptoms:
In the first few hours after a stroke the following may occur:防范招聘诈骗最重要的是
- Generalized or specific weakness, numbness, loss of nsation or motor activity involving the limbs sides of the body (hemiplegia) are not unusual findings. This may occur in either the arm or the leg
upper and lower extremities are involved this will usually occur on the same side of the body with o involvement of the face.
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Loss of speech or comprehension with or without double vision, slurred speech or difficulty swallow - Deterioration of speech, vision or nsation over a relatively short period of time (minutes to hours. - Dimness or loss of vision, particularly in one eye
福兔耳- Unexplained dizziness, unsteadiness, loss of coordination or sudden falls, naua or confusion. Later Symptoms:
- Some strokes are preceded by TIAs, with similar effects that may last anywhere from one minute to - Initially, the paralyzed muscles of a stroke victim are soft becau of central nervous system shock occurs as spinal motor neurons resume function, tightening muscles and causing the limbs to contr - Loss of urine or defecation
How Is the Diagnosis of a Stroke Made?
arteriogram), brain scanning to evaluate for defects in the blood/brain barrier, a The primary diagnosis is made bad on the patients past medical history, family history, prent signs Often the diagnosis cannot be made immediately, as discusd above the process may need to evolve Treatment
Immediate Treatment:
The initial treatment involves maintaining airway, stopping the internal bleeding, lowering elevated bloo Once the patient is stabilized and the stroke is complete the role of treatment changes in two directions: Prevention of another stroke:
Short Term: This often calls for the u of anticoagulants or aspirin (both are blood thinners Long Term: Physiotherapy becomes the most important part of medical treatment during th What Does Having A Stroke Mean?
Without a question having a stroke will change your life. Even if there is no lasting damage, you will not infarct. While a single infarct can cau significant problems, m
Multi-Infarct Dementia. When an area of the brain los circulation the cells in that area die, this is called and
Treatment is a Team Approach
The treatment of any stroke victim requires a team approach both involving the medical aspect, short te Their overall goal is to limit the extent of damage that can be done, prevent future damage, rehabilitate For Information About Ischemic Strokes, click here.
三境界
For Information About Hemorrhagic Stroke
For Information About Transient Ischemic Attacks (TIAs)
