Dermatome Screen Flashcards

1
Q

C4

A

Lateral Acromium

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2
Q

C5

A

Mid Deltoid

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3
Q

C6

A

Radial border of forearm / thumb

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4
Q

C7

A

Distal middle finger

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5
Q

C8

A

Ulnar border of forearm / 5th digit

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6
Q

T1

A

Medial border of arm

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7
Q

L1

A

Inguinal Area

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8
Q

L2

A

Anterior Mid-thigh

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9
Q

L3

A

Medial Knee

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10
Q

L4

A

Medial Malleolus

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11
Q

L5

A

Distal medial dorsum of foot

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12
Q

S1

A

Lateral border of foot

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13
Q

S2

A

Medial / Posterior Calcaneus

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14
Q

Lateral Acromion

A

C4

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15
Q

Mid Deltoid

A

C5

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16
Q

Radial Border of Forearm / Thumb

A

C6

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17
Q

Distal Middle Finger

A

C7

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18
Q

Ulnar border of forearm / 5th digit

A

C8

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19
Q

Medial border of arm

A

T1

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20
Q

Inguinal area

A

L1

21
Q

Anterior mid-thigh

A

L2

22
Q

Medial knee

A

L3

23
Q

Medial malleolus

A

L4

24
Q

Distal medial dorsum of foot

A

L5

25
Q

Lateral border of foot

A

S1

26
Q

Medial / posterior calcaneus

A

S2

27
Q

The sharp-dull test is for which tract?

A

Anterolateral System / Ventral Trigeminothalamic Tract

28
Q

The Light Touch test is for which tract?

A

Dorsal Column-Medial Lemniscal / Trigeminal Leminiscus

29
Q

Before beginning a sharp-dull test, what do you want to do first?

A

explain purpose of test to patient

30
Q

How would you describe the purpose of the sharp-dull test to a patient?

A

You have specific nerves and systems in your body that are dedicated to certain sensations such as sharp and dull. By testing these sensations on specific parts of your body, I can assess these specific nerves and systems. When I ask, I want you to tell me if the stimulus feels sharp or dull. Okay?

31
Q

After explaining the test to the patient and before starting a sharp-dull test, what should you do?

A

Show and confirm what a sharp and dull stimulus is with patient on an unaffected area.

32
Q

How is the patient positioned during a sharp-dull test?

A

Patient supine or sitting with eyes closed.

33
Q

During a sharp-dull test, do you test affected or intact area first?

A

intact area FIRST

34
Q

What sort of direction or movement should you go with a sharp-dull test?

A

Use a consistent pattern distally to proximally on a limb, but apply the stimulus randomly in a dermatome.

35
Q

How hard do you apply the sharp or dull stimulus?

A

Apply with sufficient force to deform the skin, but do not draw blood.

36
Q

What are you asking the patient when performing the the sharp-dull test?

A

Ask patient to identify Sharp vs. Dull stimulus

37
Q

After completing the exam on what side, what should you do next?

A

Compare to contralteral side or other sites (discrimination)

38
Q

The Light Tough test is for which tract?

A

Dorsal Column-Medial Leminiscal System / Trigeminal Leminiscus

39
Q

Before beginning a Light Touch test, what do you want to do first?

A

explain purpose of test to patient

40
Q

How would you describe the purpose of the Light Touch test to a patient?

A

You have specific nerves and systems in your body that are dedicated to certain sensations such as light touch. By testing this sensation on specific parts of your body, I can assess these specific nerves and systems. I want you to tell me when you feel a light touch, and then show me where I touched you. Okay?

41
Q

After explaining the test to the patient and before starting a sharp-dull test, what should you do?

A

Show and confirm what a Light Touch stimulus is with patient on an unaffected area.

42
Q

How is the patient positioned during a sharp-dull test?

A

Patient supine or sitting with eyes closed.

43
Q

During a Light Touch test, do you test affected or intact area first?

A

intact area FIRST

44
Q

How do you apply the Light Touch stimulus?

A

Use your finger tip or wisp of cotton or brush to touch (DO NOT BRUSH) the skin lightly.

45
Q

What are you asking the patient when performing the the Light Touch test?

A

Ask the patient to identify when you touch them and where you touched them.

46
Q

Match the term

  1. When you touch them.
  2. Where you touched them.
  3. Compare to other side/sites.

a. recognition
b. discrimination
c. localization

A
  1. When you touch them.
    a. recognition
  2. Where you touched them.
    c. localization
  3. Compare to other side/sites.
    b. discrimination
47
Q

After completing the exam on what side, what should you do next?

A

compare to other side/sites (discrimination)

e.g. same, increased, or decreased.

48
Q

What would decreased light touch in multiple sites in UE and LE on one side indicate?

A

lesion of contralteral brain or brain stem

49
Q

What would decreased light touch in all extremities distally but not proximally suggest?

A

peripheral polyneuropathy