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The following questions include a statement of assertion and a statement of reasoning. Determine whether the statements are true or false, and the correlation between them.
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Question 1 of 20
1. Question
Assertion: Neuromuscular blockade in utilised to treat EICP
BECAUSE
Reason: with a ‘Train of 4’ less than 1, it decreases cerebral metabolic rate
CorrectIncorrect -
Question 2 of 20
2. Question
Assertion: A fibre-optic intraparenchymal pressure monitor inserted at the frontoparietal suture may misrepresent the CPP of the cerebellum.
BECAUSE
Reason: Its accuracy is limited to local ICP
CorrectIncorrect -
Question 3 of 20
3. Question
Assertion: An EVD set at 15cm above the level of the tragus draining vigorously suggests an ICP of greater than 20cmH2O
BECAUSE
Reason: pathologically high ICPs are required for EVDs to drain
CorrectIncorrect -
Question 4 of 20
4. Question
Assertion: a four day-old Codman monitor may no longer be accurate
BECAUSE
Reason: Codman monitors cannot be re-zeroed
CorrectIncorrect -
Question 5 of 20
5. Question
Assertion: Hypokalaemia is a complication of thiopentone coma
BECAUSE
Reason: it causes a secondary osmotic diuresis
CorrectIncorrect -
Question 6 of 20
6. Question
Assertion: Bradycardia is the earliest feature of Cushing’s Triad
BECAUSE
Reason: it occurs as a result of brainstem mediated autonomic dysfunction
CorrectIncorrect -
Question 7 of 20
7. Question
Assertion: Tube ties should be replaced with brown ‘neuro’ tape or EDATs in patients with EICP
BECAUSE
Reason: accidental extubation and hypoxia may be catastrophic
CorrectIncorrect -
Question 8 of 20
8. Question
Assertion: Hyperventilation should be rapidly initiated for patients with an ICP >25mmHg
BECAUSE
Reason: hypocapnea decreases cerebral blood flow
CorrectIncorrect -
Question 9 of 20
9. Question
Assertion: Propofol is used to directly treat EICP
BECAUSE
Reason: Its vasodilatory properties promote venous drainage
CorrectIncorrect -
Question 10 of 20
10. Question
Assertion: CSF production is regulated by ICP
BECAUSE
Reason: CSF is secreted by a series of one-way valves in the choroid plexus
CorrectIncorrect -
Question 11 of 20
11. Question
Assertion: Third cranial nerve lesions that spare the pupil but lead to a ‘down and out’ gaze may be caused by chronic microvascular disease.
BECAUSE
Reason: The motor fibers run deepest in the nerve
CorrectIncorrect -
Question 12 of 20
12. Question
Assertion:A limited increase in ICP can be compensated for
BECAUSE
Reason: CSF can be displaced into the extracranial subarachnoid space
CorrectIncorrect -
Question 13 of 20
13. Question
Assertion: Uncal herniation causes a contralateral blown people
BECAUSE
Reason: the uncus compresses the parasympathetic fibers that run externally on the third cranial nerve.
CorrectIncorrect -
Question 14 of 20
14. Question
Assertion: A prominent P2 on the ICP waveform indicated a decreased cerebral compliance
BECAUSE
Reason: P2 represents the arterial pulse being transmitted through choroid plexus
CorrectIncorrect -
Question 15 of 20
15. Question
Assertion: Cortical blindness may result as a complication of uncal herniation
BECAUSE
Reason: compression of the posterior cerebral arteries crossing the tentorial notch may lead to bilateral occipital infarction
CorrectIncorrect -
Question 16 of 20
16. Question
Assertion: Tonsillar herniation may lead to acute hydrocephalus
BECAUSE
Reason: The cerebellar tonsils may compress the third ventricle
CorrectIncorrect -
Question 17 of 20
17. Question
Assertion: Excessive and rapid CSF drainage via an EVD may lead to a decreased level of consciousness
BECAUSE
Reason: Ventricular collapse may cause extradural haemorrhage.
CorrectIncorrect -
Question 18 of 20
18. Question
Assertion: In patients with severely elevated ICP, head of the bed should be >60 degrees
BECAUSE
Reason: this facilitates increased venous drainage
CorrectIncorrect -
Question 19 of 20
19. Question
Assertion: The EVD of a patient with EICP should drain but not oscillate
BECAUSE
Reason: The brain has decreased compliance
CorrectIncorrect -
Question 20 of 20
20. Question
Assertion: In the absence of EICP, a decrease in amplitude in P1 of the ICP waveform should prompt consideration of vasospasm
BECAUSE
Reason: P1 represents the natural frequency of the waveform
CorrectIncorrect