CLINICAL SCIENCES

Question 1

Erythrocytes containing mesh-like structures = which cells?

Answer 1

Reticulocytes (residual RNA from prematurely released erythrocytes)

Question 2

What test to use to predict the change of a parameter when another parameter correalted to it changes?

Answer 2

Linear regression

Question 3

Injury in forearm causing impossibility to flex index and middle fingers (hand of benediction) + weakness of forearm pronation and wrist flexion + ulnar deviation = lesion where?

Answer 3

Median nerve
(also loss of thumb opposition (ape thumb deformity) + loss of sensation in palmar 3 and 1/2 lateral fingers)

Question 4

High median nerve injury causes what lesions?

Answer 4

Low median injury signs + Benediction hand + weakness of pronation and ulnar deviation of wrist

Question 5

Low median nerve injury causes what lesions?

Answer 5

Ape hand: loss of thumb abduction + flexion of index and middle fingers + thenar wasting + loss of palmar sensation in thumb index middle and half ring finger

Question 6

Alcoholism + painful peripheral neuropathy in glove and stocking distribution + foot drop = diagnosis?

Answer 6

Dry beriberi due to thiamine deficiency B1

Question 7

Thiamine deficieny-associated diseases?

Answer 7

Wernicke: nystagmus + ophthalmoplegia + ataxia
Korsakoff: confabulation and amnesia
Wet beriberi: ddialted cardiomyopathy
Dry beriberi: peripheral neuropathy

Question 8

What is the relationship between variance and standard deviation?

Answer 8

Standard deviation is the square root of variance
(inversely, variance is the square of standard deviation)

Question 9

Which cells are affected in Guillain-Barré?

Answer 9

Schwann cells (responsible for myelin production in the peripheral nervous sytem - it’s the equivalent of oligedendroglia in the CNS)

Question 10

What is Arthus reaction?

Answer 10

IgG mediated type of hypersensitivity type III after booster vaccine