39 Acquired Metabolic Diseases of the Nervous System

Question 1

Most effective preventive measure in

high altitude (mountain sickness)

Answer 1

acclimatization by a 2-4 day stay at intermittent altitudes

Question 2

CT scan findings in carbon monoxide poisoning:

Answer 2

discrete lesions centered in the globus pallidus bilaterally and in the inner portion of the putamina

Question 3

At these levels of carbon monoxide poisoning, coma, decerebrate or decorticate posturing and seizures occur

a. 20-30%
b. 30-40%
c. 50-60%
d. 60-80%

Answer 3

c. 50-60%

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Question 4

At what blood glucose level will result to the presence of coma and may cause irreparable injury to the brain if not corrected immediately?

a. 10 mg/dl
b. 20 mg/dl
c. 30 mg/dl
d. 50 mg/dl

Answer 4

a. 10 mg/dl

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Question 5

Glucose reserve in a normal brain?

Answer 5

1-2 g (30 mmol/100g of tissue

Question 6

Initial symptoms of hypoglycemia such as nervousness, hunger, flushed facies, sweating, headache and palpitations are seen usually at this glucose level?

a. 10 mg/dl
b. 20 mg/dl
c. 30 mg/dl
d. 50 mg/dl

Answer 6

c. 30 mg/dl

Question 7

True or False

the cerebellar cortex is less vulnerable to hypoglycemia compared to the cerebral cortex

Answer 7

TRUE

Question 8

A transient improvement in speech with the administration of intravenous diazepines is seen in which of the following?

a. Dialysis Encephalopathy (Dialysis Dementia)
b. Dialysis Disequilibrium encephalopathy
c. Septic encephalopathy
d. Hyperglycemic encephalopathy

Answer 8

a. Dialysis Encephalopathy

(Dialysis Dementia)

Question 9

Pathological finding in Osmotic Demyelinating Syndrome

Answer 9

destruction of myelin sheaths throught the lesion, with relative sparing to the axons and intactness of the nerve cells of the pontine nuclei

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Question 10

Triad of Wernicke’s encephalopathy

Answer 10

Confusion

Ataxia

Nystagmus

‘CAN’ / werniCAN