Health

More evidence fried food ups heart disease, stroke risk

(HealthDay)—Check out the menus at any county fair—corn dogs, fried Oreos, even fried butter—and you'll quickly see that Americans love fried foods. But yet another study suggests that it's time to put that corn dog ...

Cardiology

Treating stroke patients just 15 minutes earlier can save lives

Initiating stroke treatment just 15 minutes faster can save lives and prevent disability, according to a new UCLA-led study, published today in JAMA. The research also determined that busier hospitals—those that treat more ...

Cardiology

New cell discovered that can heal hearts

University of Calgary researchers are the first to discover a previously unidentified cell population in the pericardial fluid found inside the sac around the heart. The discovery could lead to new treatments for patients ...

Neuroscience

How the brain prepares for movement and actions

Our behaviour is largely tied to how well we control, organise and carry out movements in the correct order. Take writing, for example. If we didn't make one stroke after another on a page, we would not be able to write a ...

Medical research

Researchers identify health conditions likely to be misdiagnosed

For a patient, a diagnostic error can mean the difference between life and death. While estimates vary, likely more than 100,000 Americans die or are permanently disabled each year due to medical diagnoses that initially ...

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A stroke, also known as a cerebrovascular accident (CVA), is the rapid loss of brain function(s) due to disturbance in the blood supply to the brain. This can be due to ischemia (lack of blood flow) caused by blockage (thrombosis, arterial embolism), or a hemorrhage (leakage of blood). As a result, the affected area of the brain cannot function, which might result in an inability to move one or more limbs on one side of the body, inability to understand or formulate speech, or an inability to see one side of the visual field.

A stroke is a medical emergency and can cause permanent neurological damage, complications, and death. It is the leading cause of adult disability in the United States and Europe and the second leading cause of death worldwide. Risk factors for stroke include old age, hypertension (high blood pressure), previous stroke or transient ischemic attack (TIA), diabetes, high cholesterol, cigarette smoking and atrial fibrillation. High blood pressure is the most important modifiable risk factor of stroke.

A silent stroke is a stroke that does not have any outward symptoms, and the patients are typically unaware they have suffered a stroke. Despite not causing identifiable symptoms, a silent stroke still causes damage to the brain, and places the patient at increased risk for both transient ischemic attack and major stroke in the future. Conversely, those who have suffered a major stroke are at risk of having silent strokes. In a broad study in 1998, more than 11 million people were estimated to have experienced a stroke in the United States. Approximately 770,000 of these strokes were symptomatic and 11 million were first-ever silent MRI infarcts or hemorrhages. Silent strokes typically cause lesions which are detected via the use of neuroimaging such as MRI. Silent strokes are estimated to occur at five times the rate of symptomatic strokes. The risk of silent stroke increases with age, but may also affect younger adults and children, especially those with acute anemia.

An ischemic stroke is occasionally treated in a hospital with thrombolysis (also known as a "clot buster"), and some hemorrhagic strokes benefit from neurosurgery. Treatment to recover any lost function is termed stroke rehabilitation, ideally in a stroke unit and involving health professions such as speech and language therapy, physical therapy and occupational therapy. Prevention of recurrence may involve the administration of antiplatelet drugs such as aspirin and dipyridamole, control and reduction of hypertension, and the use of statins. Selected patients may benefit from carotid endarterectomy and the use of anticoagulants.

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