ABCN Neuropathological Conditions and Clinical Presentations 2

Question 1

According to standard classification criteria, a traumatic brain injury is classified as 'severe' when the post-resuscitation Glasgow Coma Scale score is:

Accepted Answer

3–8

Answer

Severe TBI is defined by a GCS score of 3–8, reflecting profound impairment of consciousness at the time of injury.

Question 2

Following mild traumatic brain injury (concussion), which neuropsychological domain demonstrates the most consistent acute-phase impairment?

Accepted Answer

Processing speed and sustained attention

Answer

Processing speed and attention are the most reliably impaired cognitive domains in the acute and subacute phases after mild TBI, reflecting disrupted neural efficiency.

Question 3

Post-stroke aphasia characterized by non-fluent speech output, impaired repetition, and relatively preserved auditory comprehension is most consistent with which syndrome?

Accepted Answer

Broca's aphasia

Answer

Broca's aphasia involves non-fluent, effortful output with impaired repetition and relatively preserved comprehension due to lesions in the left posterior inferior frontal gyrus.

Question 4

A patient with left temporal lobe epilepsy is most likely to demonstrate which selective memory impairment on neuropsychological testing?

Accepted Answer

Impaired verbal learning and recall with relatively preserved visuospatial memory

Answer

Left temporal lobe epilepsy disrupts the language-dominant hippocampus and surrounding cortex, producing selective verbal memory deficits while visuospatial memory, subserved by the right hemisphere, remains relatively intact.

Question 5

Which neuropsychological measure is considered most sensitive for detecting left hippocampal dysfunction in temporal lobe epilepsy presurgical evaluation?

Accepted Answer

California Verbal Learning Test (CVLT) delayed recall

Answer

Verbal list-learning measures such as the CVLT are highly sensitive to left hippocampal dysfunction because they tax the encoding and consolidation processes dependent on left medial temporal structures.

(ABCN) American Board of Clinical Neuropsychology Practice Test

(ABCN) American Board of Clinical Neuropsychology Practice Test

ABCN Neuropathological Conditions and Clinical Presentations 2