Neuro A&P (Lauren's Part slide 68-132 ๐ญ) Flashcards
Where is the lesion:
aphasia
Neglect (canโt attend to one side of body)
Hemianopia
UMN hemiparesis
Hemisensory of face and arm vs the leg
Cortex
Where is the lesion:
Dense hemiplegia (face, arm, and leg all equally affected)
Abnormal movements (chorea, ball is, tremor, cogwheeling)
Subcortical structures: Internal Capsule and Basal Ganglia
Where is the lesion:
Truncal ataxia and dysmetria
Midline cerebellum
Where is the lesion:
Limb ataxia and dysmetria
Hemisphere of cerebellum
Where is the lesion:
Ipsilateral CN palsies
Contralateral body deficits
โCrossed signsโ
Brainstem
Where is the lesion:
Paraparesis
Bowel and Bladder involvement (rectal tone)**
Sensory level
Saddle anesthesia
spinal cord
Your patient has bilateral lower extremity weakness and bowel and bladder tone loss. What do you need to do immediately?
Give dexamethasone.
Cauda equina syndrome
If the test question says โFasciculationsโ what is the answer
Lower motor neuron
Do lower motor neurons have any sensory function?
NO. Motor control only
Where is the lesion:
Fasciculation
No sensory involvement
Lower motor neuron
What are fasciculations?
Wiggly tongue
Wiggly things under the skin
Do peripheral nerves have motor and sensory?
Yes
Where is the lesion:
Stocking glove weakness and sensory loss
Diminished reflexes
Peripheral nerve
What is fatigability ?
Your muscles perform the task at first just fine, but they get tired right away if you keep doing it
If you start brushing your teeth but you cant finish because your muscles are too tired, what is that called?
Fatigability
If you see โFatigabilityโ in a test quesstion, what is the answer?
NMJ (neuromuscular junction)
Where is the lesion:
Fatigability
No sensory involvement
Normal DTRs
NMJ
Where is the lesion:
Proximal weakness
Symmetric
No sensory involvemnt
Muscle
What is the โsettingโ of a patientโs presentation?
Patientโs age and race
What is the โtime courseโ of a patientโs presentation?
The onset and course
Ex: acute, subacute, chronic, progressive, stepwise, stable
Once you localize the lesion, you need to do VITAMIN CDE to come up with a list of differentials for what could have caused the lesion.
What does VITAMIN CDE stand for?
Vascular
Inflammatory
Trauma
Autoimmune
Metabolic
Infectious
Neoplastic
Congenital
Drugs
Epilepsy/seizures
(You would come up with Vascular things that could have caused a lesion. Then come up with Inflammatory things that could have caused it, etc)
What are the steps of a neurological examination?
Mental status (alert, coma, etc)
Neck/spine
Cranial nerves
Motor exam
Sensory exam
Reflexes
Coordination
Station and gait
Instead of describing your patientโs level of arousal as โstuporousโ or โobtundedโ etc, what should you do instead?
Just describe them.
โThe patient opens eyes and turns to voice but is mute and obeys no verbal commandsโ
What are you looking for on the neck/spine part of the neuro exam?
Inspection
Auscultation
Nuchal rigidity
What are all the cranial nerves in order?
I forgot too
I. Olfactory
II. Optic
III. Oculomotor
IV. Trochlear
V. Trigeminal
VI. Abducens
VII. Facial
VIII. Vestibulocochlear
IX. Glossopharyngeal
X. Vagus
XI. Spinal accessory
XII. Hypoglossal
What is your favorite mnemonic to remember the cranial nerves in order. Here is mine
Oh Oh Oh To Touch And Feel Virgin Girlsโ Vaginas And Hymens
What do you do to test cranial nerve II (Optic)
Visual acuity (just ask them to look at the clock or a Kleenex box)
Color vision (especially RED DESATURATION)
Visual fields
Fundoscopic exam
Pupils
What is red desaturation?
If someone is going to lose their color vision, red is going to be the color that usually is lost first.
She suggests you carry around a pen with a red cap and ask them if it looks more red in one eye vs the other
What is the fancy name for tunnel vision (losing peripheral vision)
Bitemporal hemianopia
What causes bitemporal hemianopia?
Pituitary adenoma
If someone has increased ICP, what will you see when you do a fundoscopic exam?
Papilledema
Emergency! Their brainstem could herniate
When you are doing the pupillary reflex, which cranial nerve receives the info from the light, and which one constricts the pupils?
Sees the light: CN II
Constricts the pupil: CN III
If you shine a light in someoneโs left eye, and both pupils constrict, what can you assume about their cranial nerves?
Left CN II is intact
Right AND Left CN III are intact
(Normal response)
If you shine a light in someoneโs Right eye, and neither pupil constricts, what can you assume about their cranial nerves?
Right CN II doesnt work
canโt say anything about CN III on either side
(In on II, out on III)
If someone has complete paralysis of their eyes and numbness on the top and middle part of their face, what is the problem
Something is wrong in the CAVERNOUS SINUS ***
What does CN V do?
Sensation to face
Muscles of mastication
Sensory limb of the corneal reflex (feeling the Q tip on the cornea)
When you do the corneal reflex test (touching their eyeball with a Q tip to see if they blink), which cranial nerves are you testing?
CN V: detects the Q tip
CN VII: blinks
Which cranial nerve closes your eyes
CN VII
What cranial nerve keeps the eyelids open
CN III
Which cranial nerve is damaged if you have PTOSIS (lack of eyelid opening)
CN III
What cranial nerve is damaged if you can not close your eyelids
CN VII
What is the vestibulo-ocular reflex?
Head rotates to right, eyes move to the left
Which cranial nerves are tested in the vestibulo-ocular reflex?
CN VIII (detects the Head movement)
CN VI and III move the eyes
What cranial nerves are tested with the gag reflex?
CN IX
CN X
(In on 9 out on 10)
Youโre doing the vestibulo-ocular reflex test and you turn the patients head to the right, and his eyes follow.
Abnormal or normal?
Abnormal
BRAINSTEM DAMAGE