AVM Brain - Arterio-Venous Malformations (of Brain)
An AVM is Arteriovenous Malformation, where there is tangling of the arteries and veins. The arteries are responsible for carrying out oxygenated blood to various parts of the body from the heart. The Arteries carry blood with high pressure, this is supported by the thick elastic wall present in them which helps to sustain the blood pressure. Whereas veins carry deoxygenated blood back to heart from the body. This is in contrast to the fact that veins don't have to carry blood with pressure, thus the blood flow is sluggish as compared to arterial flow. To support this sluggish blood flow, there are valves present inside veins which prevent backflow of blood. Thus any intertwining of these two blood vessels is problematic. This can occur anywhere in the body, these are very rare in the brain and occur as a result of developmental abnormality majority of the times. A Brain AVM may or may not cause any signs and symptoms. But the signs and symptoms arise when there is rup...