what is a stroke? what causes a stroke? and how is a stroke treated?
a stroke is a brain attack where something blocks blood supply to part of the brain, so the artery is blocked, which is called an ischemic stroke, the most common form. or a blood vessel in the brain bursts, so you bleed into the brain, known as a hemorrhagic stroke. when either happens, parts of the brain are damaged or die, causing brain damage, long-term disability or even death.
fast, an acronym used to identify the signs of stroke, is widely promoted to create awareness. it stands for face, arms, speech and time: if someone’s face is drooping, if they can’t raise both arms and if their speech is jumbled or slurred, it’s time to call 9-1-1 immediately. evidence suggests 1.9 million brain cells die every minute following stroke onset.
acute care makes all the difference in survival. patients in the er with stroke-like symptoms start with an urgent ct scan of the brain to identify a blood clot. since about 1997, wein says stroke patients are given medication by intravenous that essentially breaks up the blood clot. typically, it has to be given within four-and-a-half hours of the stroke to be effective and offers a 33 per cent chance of being more independent, wein adds.