Specialist expertise: Cardiology, Interventional Cardiology, Coronary Artery Disease, Exercise Intolerance, Cardiac CT, Complex Coronary Intervention.
A stroke occurs when the blood flow to an area of the brain is reduced. This decreases the amount of oxygen being delivered to that area and results in some form of neurological impairment. The nature of the impairment is dictated by the area of the brain that is affected and common examples are speech or visual disturbance or unilateral limb/muscle weakness.
The vast majority of strokes are ischaemic, which means that the blood flow in a vessel is reduced due to an obstruction (such as a blood clot or tear in the vessel wall). They can, however, also be caused by haemorrhage, which is when a vessel bleeds into the surrounding brain tissue.