What is a stroke?A stroke is a "brain attack". It is also known as a cerebrovascular accident or CVA. It occurs when blood flow to an area of brain is cut off. When this happens, the brain loses its blood supply and the part of the body that the blood-deprived brain, the brain cells that becomes deprived of oxygen begin to die. During a stroke, abilities controlled by that area of the brain such as memory and muscle control are lost.
Ischemic strokes: Ischemic stroke is caused by ischemia ( the blockages or narrowing of the arteries that provide blood to the brain and results in severely reduced blood flow). These blockages are often caused by blood clots, which can form in the arteries connecting to the brain.
Hemorrhagic strokes: This type of stroke are caused by arteries in the brain, either leaking blood or bursting open. The pressure of leaked blood that puts on brain cells and damages them.
Transient ischemic attacks (TIAs): Also referred to as mini-strokes, TIAs are different from the above mentioned kinds of stroke because the flow of blood to the brain is only briefly interrupted. In TIAs even if the blockage of the artery is temporary, they serve as warning signs for future strokes and indicates that there is a partially blocked artery or clot source in the heart.
The most common risk factors for stroke are the following:
- Increasing age
- High blood pressure
- High cholesterol
- Patent foramen ovale
- Heart valve disease
- Atrial fibrillation
Billroth Hospitals is one of the Best Cardiac Hospital in Chennai, Tamil Nadu. The hospitals offers service of the Best Cardiac Surgeon in Chennai for the diagnosis, treatment, and rehabilitation of cardio-vascular diseases. The Institute of Cardiology in Billroth Hospitals comprises of a well-recognized team of Best Cardiologists in Chennai, ensuring the highest level of treatment for patients.
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