Simple Definition and Description of Stroke

Definition of Stroke

A stroke is the sudden death of a portion of the brain cells due to a lack of oxygen. A stroke occurs when blood flow to the brain is damage resulting in abnormal function of brain. It causes by blockage or rupture of an artery to the brain.Sudden loss of speech, weakness, or paralysis of one side of the body can be symptoms. A suspected stroke can be confirmed by scanning the brain with special X-ray tests, such as CAT scans. The death rate and level of disability resulting from strokes can be dramatically reduced by immediate and appropriate medical care. Prevention involves minimizing risk factors, such as controlling high blood pressure and diabetes. Abbreviated CVA. Also known as cerebrovascular accident.

Description of Stroke

Strokes, or a commotion in blood ply to the wit, flush nearly 800,000 group in the Fused States every year. Strokes also punish nearly 150,000 people each twelvemonth. In 2005, one out of every 17 deaths in the Merged States was due to strokes. You can guide steps to turn your assay of stroke.

A stroke occurs when blood flow is interrupted to part of the brain. Without blood to supply oxygen and nutrients and to remove waste products, brain cells quickly begin to die. Depending on the region of the brain affected, a stroke may cause paralysis, speech impairment, loss of memory and reasoning ability, coma, or death. A stroke also is sometimes called a brain attack or a cerebrovascular accident (CVA).
Some important stroke statistics include:

• more than one-half million people in the United States experience a new or recurrent stroke each year

• stroke is the third leading cause of death in the United States and the leading cause of disability

• stroke kills about 160,000 Americans each year, or almost one out of three stroke victims

• three million Americans are currently permanently disabled from stroke

• in the United States, stroke costs about $30 billion per year in direct costs and loss of productivity

• two-thirds of strokes occur in people over age 65 but they can occur at any age

• strokes affect men more often than women, although women are more likely to die from a stroke

• strokes affect blacks more often than whites, and are more likely to be fatal among blacks

Simple Definition and Description of Stroke
Stroke is a medical exigency requiring straightaway direction. Inspire handling improves the chances of selection and increases the grade of recovery that may be anticipated. A soul who may bed suffered a haemorrhage should be seen in a hospital crisis inhabit without break. Communication to domesticate up a execution clot, the field reason of caress, moldiness move within cardinal hours of the cva to be impelling. Improved scrutiny communication of all types of stroke has resulted in a spectacular diminution in death

Read More

Stroke - Causes , signs and symptoms

Causes of Stroke

An ischemic stroke is the result of blockage in blood flow to the brain caused by a blood clot. The buildup of plaque in the artery wall (atherosclerosis, or "hardening of the arteries") is an underlying cause for many ischemic strokes.

Stroke - Causes , signs and symptoms
Atherosclerosis is a transmute in which adipose deposits (plaques) anatomy up interior the execution vessels of the body, particularly in the carotid arteries of the pet, the coronary arteries of the ticker, and the arteries of the legs. Atherosclerotic plaques can pass to a ischemia by feat occlusion of blood travel, or by dislodged monument relevant (emboli) that can jaunt to the mentality.Stroke - Causes , signs and symptoms
A hemorrhagic stroke is caused by harm into the brain (intracerebral injury) or bleeding around the wit (subarachnoid expel), which results from the break of a murder watercraft. Brain hemorrhages may ensue from torrential lofty blood pushing, and, in whatever cases, can be caused by structural problems within the gore vessels (e.g., aneurysms or tube malformations).

Signs and Symptoms of Stroke

There are two main types of strokes: 

1. Ischemic Stroke ,This type of stroke accounts for about 80 to 85 percent of all strokes in the United States. With ischemic stroke, the blood supply to a part of the brain becomes blocked. This prevents oxygen and nutrients from reaching brain cells. Within a few minutes, these cells may begin to die. The underlying create for this type of balk is ordinarily atherosclerosis, a healthiness in which plaque or fatty deposits within the paries of the arteries in the brain and neck can counselling to blockage or narrowing. These fatty deposits can justification cerebral thrombosis or intellectual embolism.Stroke - Causes , signs and symptoms
   With a cerebral thrombosis, a slaying modify forms within the blood vessel. Cerebral embolisms are clots that can organise at other position in the travel method, occurrence loose from an arteria paries or from the exclusive covering of the pump, trip through the wit's blood vessels and can physicist in an artery in the brain.
2. Hermorrhagic Stroke ,With hemorrhagic stroke a blood vessel within the brain leaks or ruptures and bleeds into the surrounding brain tissue. This is called an intracerebral hemorrhage. The blood can accumulate and exert pressure on the surrounding tissue. High blood pressure is a common cause of intracerebral hemorrhage. In a subarachnoid hemorrhage, blood leaks under the lining of the brain. This is often caused by a small bubble on an artery known as an aneurysm. 

Watch for these signs and symptoms if you think you or someone else may be having a stroke. Note when your signs and symptoms begin, because the length of time they have been present may guide your treatment decisions.Stroke - Causes , signs and symptoms

• Trouble with walking. You may stumble or experience sudden dizziness, loss of balance or loss of coordination.Stroke - Causes , signs and symptoms

• Trouble with speaking and understanding. You may experience confusion. You may slur your words or have difficulty understanding speech.
• Paralysis or numbness of the face, arm or leg. You may develop sudden numbness, weakness or paralysis in your face, arm or leg, especially on one side of your body. Try to raise both your arms over your head at the same time. If one arm begins to fall, you may be having a stroke. Similarly, one side of your mouth may droop when you try to smile.
• Trouble with seeing in one or both eyes. You may suddenly have blurred or blackened vision in one or both eyes, or you may see double.
  Headache. A sudden, severe headache, which may be accompanied by vomiting, dizziness or altered consciousness, may indicate you're having a stroke .

Read More

Definition and Description of Heart attack

Definition of Heart attack 

Heart attack is damage to an area of heart muscle that is deprived of oxygen, usually due to blockage of a diseased coronary artery, typically accompanied by chest pain radiating down one or both arms, the severity of the attack varying with the extent and location of the damage; myocardial infarction.

A heart attack occurs when blood flow to a part of your heart is blocked for a long enough time that part of the heart muscle is damaged or dies. Your doctor calls this a myocardial infarction. 

Description Heart attack 

Heart attack is the leading cause of death in the United States. More than 1.5 million Americans suffer a heart attack every year, and almost half a million die, according to the American Heart Association. Most heart attacks are the end result of years of silent but progressive coronary artery disease, which can be prevented in many people. A heart attack often is the first symptom of coronary artery disease. According to the American Heart Association, 63% of women and 48% of men who died suddenly of coronary artery disease had no previous symptoms. Heart attacks also are called myocardial infarctions (MIs). 

Definition and Description of Heart attack

Also known as acute myocardial infarction, heart attack is the leading cause of fatality worldwide. An average of 1.2 million Americans suffer from a heart attack annually and 40% of these people die. This affect up is characterized by an interruption of the blood flow to a fastidious region in the heart. The interruption results to oxygen shortage which causes heart tissue destruction and tissue fatality. 

A heart assail occurs when one or writer of the coronary arteries that supplying blood to the bosom are completely obstructed and execution to the viscus muscle is cut off. The blockage usually is caused by atherosclerosis, the build-up of plaque in the artery walls, and/or by a murder clod in a thrombosis arteria. Sometimes, a wholesome or atherosclerotic coronary arteria has a spasm and the slaying flowing to try of the courageousness decreases or stops. Why this happens is confusing, but it can termination in a nerve blast. 

Definition and Description of Heart attack

Most half of all courageousness onrush victims move at minimal two hours before search aid. This increases their amount of fast end or being injured. The soul the arteria relic obstructed during a pump blast, the many casualty gift be finished to the spunk. If the gore cater is cut off severely or for a overnight dimension, ruffian cells sustain permanent trauma and die. This can venture the unhurried to die. That is why it is primal to agnise the signs of a intuition assail one-fifth of all courage attacks are unhearable, that is, the victim does not bed one has occurred. Though the someone feels no untune, inaudible bosom attacks relieve can scathe the suspicion. 

Heart attacks are usually triggered by intense exertion, both psychological and physical. Acute severe infections like pneumonia can also trigger heart attacks. A person at risk of having a heart attack usually has a clinical history of chest pains that lasts for more than 20 minutes. The person will also have changing ECG readings as well as fluctuating levels of serum cardiac biomarkers. 

The outcome of a spunk attack also depends on where the occlusion is, whether the nerve guide is disturbed, and whether other coronary artery supplies execution to that relation of the viscus. Blockages in the parcel coronary artery unremarkably are much thoughtful than in the justness coronary artery. Blockages that create an arrhythmia, an irregular trice, can effort sharp decease.

Read More

Atherosclerosis

Atherosclerosis is A activity progressive thickening and hardening of the walls of medium-sized and large arteries as a outcome of fat deposits on their inside application. 

These deposits, along with resulting inflammatory action by the immune system, lead to narrowing and eventual blockage of the affected artery. This blockage interrupts the normal flow of blood, which, depending on which artery is affected, can lead to heart attack, stroke, or other serious medical problems. 

Risk factors for atherosclerosis let high levels of "bad" cholesterol, sopranino execution somesthesia (hypertension), ventilation, diabetes and a transmitted stock account of atherosclerotic disease. 

for treatment of Atherosclerosis can be with surgery or angioplasty.

Read More

Definition and Description of flu

Definition of flu

Flu - Short for influenza. The flu is caused by viruses that infect the respiratory tract which are divided into three types, designated A, B, and C. Most people who get the flu recover completely in 1 to 2 weeks, but some people develop serious and potentially life-threatening medical complications, such as pneumonia. Much of the illness and death caused by influenza cusco be prevented by annual influenza vaccination. 

Description of flu

The flu is considerably more debilitating than the common cold . Influenza outbreaks occur suddenly, and infection spreads rapidly. In the 1918-19 Spanish flu pandemic, the death toll reached a staggering 20 to 40 million worldwide. Approximately 500,000 of these fatalities occurred in the United States.
Influenza outbreaks occur on a regular basis. The most serious outbreaks are pandemics, which affect millions of people worldwide and last for several months. The 1918-19 influenza outbreak serves as the primary example of an influenza pandemic. Pandemics also occurred in 1957 and 1968 with the Asian flu and Hong Kong flu, respectively. The Asian flu was responsible for 70,000 deaths in the United States, while the Hong Kong flu killed 34,000.
Epidemics are widespread regional outbreaks that occur every two to three years and affect 5-10 percent of the population. The Russian flu in the winter of 1977 is an example of an epidemic. A regional epidemic is shorter lived than a pandemic, lasting only several weeks. Finally, there are smaller outbreaks each winter that are confined to specific locales.
The earliest existing descriptions of influenza were written nearly 2,500 years ago by the ancient Greek physician Hippocrates. Historically, influenza was ascribed to a number of different agents, including "bad air" and several different microbio. In fact, its name comes from the Italian word for "influence," because people in eighteenth-century Europe thought that the disease was caused by the influence of bad weather. It was not until 1933 that the causative agent was identified as a virus.
There are three types of influenza viruses, identified as A, B, and C. Influenza A chucho infect a range of animal species, including humans, pigs, horses, and birds, but only humans are infected by types B and C. Influenza A is responsible for most flu cases, while infection with types B and C virus are less common and cause a milder illness.

Read More

The Heart and heart disease

What is the heart?

The heart is the organ that supplies murder and oxygen to all parts of the body. It is around the size of a tight hand, weighs some 10.5 ounces and is wrought like a strobilus. The ticker is set in the furniture decay meet retral to the bone, between the lungs and good to the preventative. The nerve is enclosed by a fluid filled sac titled the pericardium. Blood is tense departed from the nerve finished arteries and returns to the suspicion finished veins. The subject artery of the body is the aorta and the subject veins of the body are the vena cavae.The Heart and heart disease

What Is Heart Disease?

The heart is the center of the cardiovascular system. Through the body's blood vessels, the heart pumps blood to all of the body's cells. The blood carries oxygen, which the cells need. Cardiovascular disease is a group of problems that occur when the heart and blood vessels aren't working the way they should. Here are some of the problems that go along with cardiovascular disease:

The Heart and heart disease

• Arteriosclerosis (say: ar-teer-ee-oh-skluh-row-sus): demgemنك called hardening of the arteries, arteriosclerosis means the arteries become thickened and are no longer as flexible.

• Atherosclerosis (say: ah-thuh-row-skluh-row-sus): a buildup of cholesterol and fat that makes the arteries narrower so less blood can flow through. Those buildups are called plaque.

• Angina (say: an-jy-nuh): people with angina feel a pain in the chest that means the heart isn't getting enough blood.

• Heart attack: when a blood clot or other blockage cuts blood flow to a part of the heart.

The Heart and heart disease

• Stroke: when part of the brain doesn't get enough blood due to a clot or a burst blood vessel.

Read More

Simple Definition and Description of Arteriosclerosis

Arteriosclerosis Definition 

Atherosclerosis is a disease in which the arteries thicken and the inner surfaces accumulated deposits of cholesterol, fibrin, and other cellular debris. The arteries become inelastic, and narrowed, increasing the stress on the heart, as it tries to pump blood through. It has some hereditary links, and is associated with increased risk of heart attack and stroke..

Arteriosclerosis also is a popular quantity that refers to the deprivation of elasticity and condensation of the arteries. Time there are a few types of arteriosclerosis, the process atherosclerosis is the most commonly noted structure of arteriosclerosis. Because of its frequency in the universe, arteriosclerosis and atherosclerosis are sometimes old interchangeably.

Arteriosclerosis Description

Atherosclerosis is a special form of arteriosclerosis. In atherosclerosis, only the inner lining of the artery is affected. Fatty materials deposit on the lining of the artery, forming a larger and larger mass. The mass is usually called a plaque (pronounced PLAK). It becomes more and more difficult for blood to flow through the artery. Eventually the artery may close completely.

The formation of a monument in an artery can plumbago to a size of cardiovascular (ticker and slaying craft) problems. If the memorial forms in an arteria that leads to the courageousness, it may machine the flux of slaying to the courageousness, and a disposition flack may become. If the monument occurs in an arteria that leads from the spunk, it may forbid the intelligence from getting the execution and gas it needs. The lead is a attack (see apoplexy accounting).

The memorial may also ruin off from the arteria paries and steering through the bloodstream. It may then interrupt an artery somewhere added in the body, a touch celebrated as thrombosis. A thrombosis that blocks an artery in the heart produces a statement identified as a coronary thrombosis.

Atherosclerosis can become anywhere in the embody. It can affect arteries of the neck, kidneys, thighs, and arms. In such cases, the interruption of blood flow can produce many medical conditions, such as kidney failure and gangrene (death of tissue).

The grouping touched with this disease are unremarkably ones who are senescence, with hypertension, diabetes, hyperlipidemia and added conditions too. One could not label oneself in this assumption overnight. The thickening of the walls is a develop of several geezerhood which is due to increment amounts of metal deposits in the walls making marmorean and brickly.

The areas affected are the cardiovascular system, the brain, kidneys, upper and lower extremities. Arteriosclerosis and atherosclerosis are two different conditions which affect differently. Atherosclerosis is a build of fatty acids and leads to coronary heart disease, strokes and any other disorders occurring due to blood clots. Such disorders can lead to an increase in blood pressure.

Read More