Sensory Tests Flashcards
1
Q
What is the CN I test?
A
- Tests olifactory sense
- Pt plugs one nostril
- Smells common odor
- Positive test if patient cannot smell
- Implicates nasal lesions, anterior/ inferior cerebrum lesions
2
Q
What is the CN II test?
A
- Tests vision
- 20’ from snellen chart; read one line at time , holding non-test eye closed
- Positive test is impaired vision
- Test peripheral vision by moving an object from the patient’s ear towards their field of vision.
- Positive test if the patient cannot see the object before 90 degrees of forward gaze.
3
Q
What is CN III test?
A
- Tests oculomotor and pupillary assesment (inferior, medial, and superior rectus; inferior oblique, levator palpabral
- Pt. follows PT’s finger drawing two large H’s.
- Pt. blinks eyelids
- Positive test is inability to follow finger, blink normally, or has double vision
- Midbrain lesions
4
Q
What is CN IV test?
A
- Tests superior oblique muscle
- Pt. follows clinician’s finger in horizontal and vertical directions without head movement.
- Positive sign is inability to move eye down and inward
- Indicates midbrain lesions.
5
Q
What CN tests may check pupillary constriction?
A
II and III.
6
Q
What does barognosis test?
A
Recognition of weight?
7
Q
Who would classification of sensory test is barognosis?
A
Combined cortical.
