Strokes and Brain Bleeds – Dr. Gnana sankaralingam Stroke is said to have occurred when blood supply to an area of brain has been interrupted resulting in damage to that part, leading to loss of function of the corresponding regions of the body controlled by the diseased brain segment. Since it involves blood vessels and brain cells, it is called Cerebro-Vascular accident (CVA). It is a medical emergency due to either blockage or rupture of artery to the brain causing death of cells if not treated quickly, due to lack of oxygen and nutrients. About 60% are ischaemic strokes due to blocked artery in brain while around 40% are haemorrhagic strokes due to burst artery in brain. Important risk factors for a stroke are diabetes, high blood pressure and atrial fibrillation. In Transient Ischaemic attack (TIA) or mini stroke, symptoms resolve itself within 24 hours. To understand strokes, brief knowledge ...