A stroke or cerebrovascular accident (CVA) as the doctors call it is a sudden event in which the blood supply to a part of the brain is cut off, either by way of a blockage or due to blood leaking into the brain tissue. This results in a decreased supply of oxygen to the part of the brain that was being supplied by the involved blood vessel and eventual cell death. This condition, called ischaemia, is at first reversible, if the blood supply is restored partially. But if the oxygen starvation continues, then the cell damage becomes permanent and the brain cells in that region die. It is obvious that the earlier one is able to identify the symptoms in a person having a stroke, the greater are the chances of treating it before the ischaemia becomes irreversible. Unfortunately, many people recognise the symptoms quite late, since they do not know what to look out for. Here is how one can quickly recognise, if a person is having a stroke.
The F.A.S.T. symptoms thus help in identifying stroke victims early and can be very helpful in seeking medical intervention early.