ANSWERS (GRADED A+).
What characterizes the memory loss in patients with dissociative amnesia? (x2) - CORRECT -Episodic
Amnesia preceded by epigastric sensation/fear are associated with electrical abnormalities where? -
CORRECT -Temporal lobe
Memory loss pattern in dissociative amnesia? - CORRECT -Occurs for a discrete period of time
(episodic!)
Amnesia characterized by loss of memory of events, occur after onset of etiologic condition or agent? -
CORRECT -Anterograde
Pt reports hearing voices of someone not present, stops moving, stares blankly, repetitively picks at
clothing, does not respond to questions/commands for several minutes. The confusion resolves after 15
minutes but pt has no recollection of events. Likely what? - CORRECT -Complex partial seizure
55 y/o pt BiB family after episode of amnesia/bewilderment lasting several hours. CVA ruled out. Pt
keeps asking what is happening. What medication to administer at this point? - CORRECT -
Observation with no pharmacological intervention
What psychoactive drug produces amnesia? - CORRECT -EtOH
Pt with strange behavior answers appropriately with fluent speech but no ability to retain new
information. Episode lasts 6 hours then back to normal. No recollection of events. What is the
diagnosis? - CORRECT -Transient global amnesia
Which of the following diagnoses involves a sense of loss of identity, often following a traumatic
experience and associated with inability to recall one's past? - CORRECT -Dissociative fugue
, Contralateral leg weakness with sparing of the face and arms. Urinary incontinence and abulia. Where
is the lesion? - CORRECT -Anterior cerebral artery
Visual problem in pituitary tumor compressing optic chiasm (x10)? - CORRECT -Bitemporal
hemianopsia
60 y/o right-handed M, getting lost, only writes on right half of paper. Left-sided hemi-neglect. Where
is the lesion? (x8) - CORRECT -Right parietal lobe
66 yo c/o frequent falls, several months h/o of anxiety, unwillingness to leave home. On exam, mild
impairment of vertical gaze on smooth pursuit, saccades, mild axial rigidity of upper extremities, along
with mild slowness of movement on finger tapping, hand opening and wrist opposition.
Posture normal. Gait tentative/awkward, but w/o shuffling, ataxia, tremor. Pt is slow in arising from
chair. Most likely diagnosis? 5x - CORRECT -Progressive supranuclear palsy
65 yo pt fell several times in past 6 months. MSE normal. Smoth pursuit, saccadic movements
impaired. Worse with vertical gaze. Full ROM with doll head maneuver. Mild symmetric
rigidity/bradykinesia, no tremor. MRI/CSF/labs unremarkable. Diagnosis? x4 - CORRECT -
Progressive supranuclear palsyof right hand for
70 yo pt develops confusion, lethargy, and generalized tonic clonic seizures. Lab reveals serum sodium
of 95 meq/L. This is most likely a complication of excessively rapid correction of which metabolic
problem? - CORRECT -Central pontine myelinolysis
Which lesion causes b/l coarse nystagmus worsening with visual fixation and present with horizontal
and vertical gaze? - CORRECT -Brain stem
26 y/o with headache, clumsiness of right hand for weeks. Struggles with rapid alternating movements
of right hand, overt intention tremor with finger to nose, mildly dysmetric finger tapping. CNS normal,
no papilledema. Damage to what is seen on MRI? x3 - CORRECT -Cerebellum
9 y/o F has 3-month h/o seemingly unprovoked bouts of laughter. Worse when not sleeping well. Pt
does not feel happy during these episodes. Started menstruating 6 months ago and at Tanner stage
4. Diagnosis? x2 - CORRECT -Hypothalamic hamartoma