FAST is an easy way to remember and identify the most common symptoms of a stroke. Recognition of stroke anding 9-1-1 will determine how quickly .Sometimes other symptoms appear, separately, in combination or with F.A.S.T. signs. Sudden confusion, trouble speaking or understanding s.ch. Sudden numbness or weakness of face, arm or leg. Especially on one side of the body. Sudden trouble seeing in one or Both eyes..Abstract. Background and PurposeReliable identification of stroke patients in the field by prehospital personnel could expedite delivery of acute stroke therapy .