SFST Flashcards
(24 cards)
THE SIX TESTS
- ONE LEG STAND
- FINGER TO NOSE
- FINGER COUNT
- WALK AND TURN
- TRACING
- NYSTAGMUS
WHAT IS THE NAME OF THE NYSTAGMUS WE USE
HORIZONTAL GAZE NYSTAGMUS
3 SFST TESTS
- HGN: HORIZONTAL GAZE NYSTAGMUS
- WAT: WALK AND TURN
- OLS: ONE LEG STAND
HGN (HORIZONTAL GAZE NYSTAGMUS)
INVOLENTARY JERKING OF THE EYES, OCCURING AS EYES GAZE TO THE SIDE
(COULD ALSO INCLUDE DRUGS ON BOARD AS WELL)
CATEGORIES OF NYSTAGMUS
- VESTIBULAR
- NEURAL
- PATHOLOGICAL DISORDERS AND DISEASES
VESTIBULAR NYSTAGMUS
- ROTATIONAL
- POST ROTATIONAL
- CALORIC
- POSITIONAL ALCOHOL NYSTAGMUS
NEURAL NYSTAGMUS (3)
- OPTOKINETIC
- PHYSIOLOGICAL
- GAZE
GAZE NYSTAGMUS (3)
- HORIZONTAL
- VERTICAL
- RESTING
VIRTICAL GAZE NYSTAGMUS
INVOLENTARY JERKING OF THE EYES UP AND DOWN
RESTING NYSTAGMUS
JERKING OF THE EYES AS THEY LOOK STRAIGHT AHEAD
PATHALOGICAL DISORDER NYSTAGMUS
- BRAIN TUMORS AND OTHER BRAIN DAMAGE
- SOME INNER EAR DISEASES
- RARE IN THE DRIVING POPULATION
MEDIAL CONDITIONS
- EQUAL PUPIL SIZE
- RESTING NYSTAGMUS
- EQUAL TRACKING
- SYMPTOMS MAY MIMIC ALOHOL IN THE SYSTEM
3 CUES OF HGN
- LACK OF SMOOTH PERSUIT
- DISTINCT AND SUSTAINED NYSTAGMUS AT MAXIMUM DEVIATION
- ONSET OF NYSTAGMUS PRIOR TO 45 DEGREES
HGN PROCEDURE
1 - CHECK FOR EYEGLASSES
2 - VERBAL INSTRUCTIONS
3 - POSITION STIMULUS
4 - EQUAL PUPIL SIZE AND RESTING NYSTAGMUS
5 - EQUAL TRACKING
6 - LACK OF SMOOTH PERSUIT
7 - CHECK FOR DISTINCT AND SUSTAINED NYSTAGMUS AT MAX DEVIATION
8 - CHECK FOR ONSET OF NYSTAGMUS PRIOR TO 45 DEGREES
9 - TOTAL THE CUES
10 - CHECK FRO VGN
HOW MANY CUES INDICATE ABOVE A 0.08
4 OR MORE CUES
WAT PROCEDURE
1 - HEEL-TO-TOE STANCE
2 - ARMS DOWN AT SIDES
3 - DONT START UNTIL TOLD
4 - 9 HEEL-TO-TOE STEPS, TURN, 9 HEEL-TO-TOE STEPS
WAT TEST CLUES
- CANNOT KEEP BALANCE WHILE LISTENING TO INSTRUCTION
- STARTS BEFORE BEING TOLD TO
- STOPS WHILE WALKING
- DOES NOT TOUCH HEEL-TO-TOE FULLY
- STEPS OFF THE LINE (SHOES MUST BE IN LINE WITH ONE ANOTHER)
- USES ARMS TO BALANCE
- IMPROPER TURN
- INCORRECT NUMBER OF STEPS
WAT TEST CRITERA FOR BAC AND CLUES
2 OR MORE CLUES INDICATES BAC AT OR ABOVE 0.08
OLS (ONE LEG STAND)
DIVIDED ATTENTION TEST, MENTAL TASK, AND PHYSICAL TASK
OLS INSTRUCTIONS
1 - STAND STRAIGHT, FEET TOGETHER
2 - KEEP ARMS AT SIDES
3 - MAINTAIN POSITION UNTIL TOLD OTHERWISE
4 - RAISE EITHER LEG
5 - KEEP FOOT RAISED APPROXIAMTELY 6 INCHES OFF GROUND, PARALLEL TO THE GROUND
6 - KEEP BOTH LEGS STRAIGHT AND ARMS AT YOUR SIDE
7 - KEEP EYES ON RAISED FOOT
8 - COUNT OUT LOUD “ONE ONETHOUSAND ONE….” ETC UNTIL TOLD TO STOP
- IT IS A 30 SECOND TIMER
OLS TEST CLUES
- SWAYS WHILE BALANCING (ANYTHING NOTICABLE THAT IS OVER THE TOP)
- USES ARMS FOR BALANCE
- HOPPING
- PUTS FOOT DOWN
OLS TEST CRITERIA FOR BAC AND CLUES
2 OR MORE CLUES INDICATES A BAC AT OR ABOVE 0.08
