Neuro Reflexes Flashcards Preview

Clinical Assess 3 > Neuro Reflexes > Flashcards

Flashcards in Neuro Reflexes Deck (28):
1

Reflex Arc

What does the reflex arc consist of?

–Stretch receptor

–Afferent peripheral nerve fibers

–Anterior horn cell

–Efferent nerve fibers

–Neuromuscular junction

2

Reflex Arc

Reflexes and Spinal Levels

Biceps

•C 5 & 6

A image thumb
3

Reflex Arc

Reflexes and Spinal Levels

Brachioradialis

•C 5 & 6

A image thumb
4

Reflex Arc

Reflexes and Spinal Levels

Triceps

•C 6 & 7

A image thumb
5

Reflex Arc

Reflexes and Spinal Levels

Knee/Patellar

•L 2, 3, & 4

A image thumb
6

Reflex Arc

Reflexes and Spinal Levels

Ankle

•S 1

A image thumb
7

Reflex Arc

Reflexes and Spinal Levels

Plantar response (Babinski)

•L5, S1

A image thumb
8

Grading Deep Tendon Reflexes

Absent

  0 – 4+ scale or “sustained clonus”

0 Absent

A image thumb
9

Grading Deep Tendon Reflexes

Reflex present with reinforcement

  0 – 4+ scale or “sustained clonus”

1+ Reflex present with reinforcement

A image thumb
10

Grading Deep Tendon Reflexes

Reflex present without reinforcement

  0 – 4+ scale or “sustained clonus”

2+ Reflex present without reinforcement

(normal)

A image thumb
11

Grading Deep Tendon Reflexes

Brisker than average

  0 – 4+ scale or “sustained clonus”

3+ Brisker than average

 

A image thumb
12

Grading Deep Tendon Reflexes

Very brisk, with beats of clonus

  0 – 4+ scale or “sustained clonus”

4+ Very brisk, with beats of clonus

 

A image thumb
13

Grading Deep Tendon Reflexes

What is normal?

  0 – 4+ scale or “sustained clonus”

2+    Reflex present without reinforcement

  (this is the normal state)

 

A image thumb
14

Grading Deep Tendon Reflexes

What should you do if the patient sustains clonus?

  0 – 4+ scale or “sustained clonus”

Sustained clonus (document # of beats)

 

A image thumb
15

Alternate involuntary contraction & relaxation in rapid succession.

clonus

16

Deep Tendon Reflexes

Which side of the hammer?

Biceps

Point

17

Deep Tendon Reflexes

Which side of the hammer?

Triceps

Point

18

Deep Tendon Reflexes

Which side of the hammer?

Brachioradialis

long edge

19

Deep Tendon Reflexes

Which side of the hammer?

Ankle

long edge

20

Deep Tendon Reflexes

Which side of the hammer?

Patellar

point

21

Deep Tendon Reflexes

When testing the ankle reflex, you should _______ the foot

slightly dorsiflexes the foot when testing ankle reflexes

22

If clonus is present, what are you assessing for?

•Assesses for CNS (UMN) disease

23

How do you test for clonus?

•Sharply dorsiflex the foot & hold in flexion

•Observe & feel for rhythmic oscillations between dorsi- and plantar flexion

24

What does the Plantar-"Babinski" reflex test for?

–Assesses upper motor neuron dysfunction

25

Plantar-"Babinski" test responses?

ABN = Fanning and abduction of toes. Babinski Response present or “toe upgoing”

________

–Normal =toes down going/flexion of toes and foot. “absent” or “toes downgoing”

26

Superficial Abdominal Reflexes

What is the test, what is normal?

  • Patient supine; stroke each quadrant with reflex hammer

–In upper quadrants, stroke “up and out”

–In lower quadrants, stroke “down and out”

___________

Umbilicus should move TOWARD stimulation

27

Cremasteric Reflex

Test and normal

  • Male Patient
  • Stroke the inner thigh from proximal to distal (down)

____________

•The testicle and scrotum should rise on the side of the stimulus

____________

(if reflex is absent, may have testicular torsion, spinal injury or disease of neuromuscular junction)

28

Cremasteric Reflex

What if the reflex is absent?

(if reflex is absent, may have testicular torsion, spinal injury or disease of neuromuscular junction)

_____________

  • Male Patient
  • Stroke the inner thigh from proximal to distal (down)

____________

•The testicle and scrotum should rise on the side of the stimulus

____________