The Cincinnati Prehospital Stroke Scale

Facial droop (have patient show teeth or smile)

  • Normal—both sides of face move equally

  • Abnormal—one side of face does not move as well as the other side

  • Arm drift (patient closes eyes and holds both arms straight out for 10 seconds)

  • Normal—both arms move the same or both arms do not move at all (other findings, such as pronator drift, may be helpful)

  • Abnormal—one arm does not move or one arm drifts down compared with the other

  • Abnormal speech (have the patient say “you can’t teach an old dog new tricks”)

  • Normal—patient uses correct words with no slurring

  • Abnormal—patient slurs words, uses the wrong words, or is unable to speak

  • Interpretation: If any 1 of these 3 signs is abnormal, the probability of a stroke is 72%.