T8.7: Peripheral NS Disorders

Question 1

Which of these is a positive manifestation?

A. Paresis
B. Anhidrosis
C. Parthesisa
D.Areflexia

RFA

Answer 1

ANS. Paresthesia- is tingling and is a positive manifestation( excess or distorted normal function) other noted are Fasciculation( unpredictable motor activity), Neuralgia( nervous compression causing period of pain)

A, B & D are all Negative Manifestations( total loss of normal function)

Question 2

A 33 year old women is getting her median nerve conduction velocity tested . In the first test two recorders(R1 & R2) are spaced .25m from each other. The results of the test are R1 .001 second and R2.004 seconds. A second test is done this time using two Stimulators (S1 & S2). The Stimulators are also place .25 meters from each other and the results come out as S1 .002 seconds and S2.009 seconds. What is the conduction velocity of the median motor nerve?

A. 35.7 m/s
B. 62.5 m/s
C. 83.3 m/s
D.125 m/s

RFA

Answer 2

Ans A. 35.7 m/s the equation to used is m/s= D/( T2-T1). After knowing the equation need to know which of the two described test is for motor and which is for sensory. In motor 2 stimulators are used and in sensory 2 recorders are used. m/s=.25/(.009-.002)/ plug and chug should get 35.7 m/s

B. Is .25/.004

C. 83.3 is the patients sensory conduction velocity.

D. is .25/.002

Question 3

A 43 year old man suffered from a virus that destroyed his Schwann cells.Two years later he is back to have almost normal muscle control. What influenced the regeneration of the synaptic basal lamina?

A.Laminin 11
B. Schwann cells undergoing Gliosis
C. Laminin 2
D. Laminin 8

RFA

Answer 3

ANS A. Laminin 11-is present in the synaptic basal lamina

B. Schwann Cells don’t undergo Gliosis. It is done by astrocytes after trauma and is formation of scar tissue since astrocytes can’t regenerate

C. laminin 2 is found extrasynaptic basal lamina

D. Laminin 8 was not discussed

Question 4

Gliosis occurs following a trauma. Which glial cells multiple in the damaged region to form a scar that mechanically impedes sprouting axons? (MG)

A. Ependymal cells
B. Tanycytes
C. Astrocytes
D. Microglia

Answer 4

C. Astrocytes

Question 5

36 year old male presents with an infection of the skin that results in painless lesions. The infection was caused by a bacterium from the family Mycobacterium. What condition does the patient have? (MG)

A. Lead poisoning
B. Hansen disease
C. Alcoholic peripheral neuropathy
D. Diabetes Mellitus

Answer 5

B. Hansen disease

aka Leprosy

Question 6

Your patient has carpal tunnel syndrome. Select all of the criteria associated with a high likeliness of carpal tunnel syndrome (MG)

Male/Female/Both as likely
Childhood/Young adult/middle age/elderly
Low T3 levels/high T3 levels

Answer 6

More likely in females
more likely in middle aged
more likely if they have hypothyroidism

+ more likely if the patient is pregnant

Question 7

Your patient Ahmed comes to you with symptoms lasting over the past 6 months. He’s experiencing sensory loss in his feet and now its getting difficult for him to move his toes. You ask him how much he drinks and he says only a few time a week. What will his nerve conduction velocity be?

A) Increased
B) Normal
C) Decreased
D) Flucuating

Answer 7

Answer- B

PT shows signs of chronic alcoholic neuropathy. usually in chronic alcoholic neuropathy nerve conduction velocity is normal. why idk thats what lecturers say.

Question 8

You are extremely cheap and buy your kid shitty quality toys. They develop bilateral muscle wasting and encephalopathy. How did u fuck up ur kid?

A) Guillain Barre
B) Leporsy 
C) Daddy Issues
D) Lead Poisoning
E) Diabetes

Answer 8

Answer = D

in kids under 6 lead poisoning gives encephalopathy