Brainstem Syndromes and CN Disorders Flashcards
Name the part of the brain:
Ventral bridge to hemispheres
Contains which CN?
Midbrain
CN3, CN4
Name the part of the brain:
Dorsal to cerebellum
Contains which CN?
Pons
Corticospinal tract
CN7 wraps around
CN6 exits ventral
CN5 exits lateral
Name the part of the brain:
Bridge to spine
Contains which CN?
Medulla
CN8-CN12
Order the following medial to lateral:
CN10, Nucleus ambiguous, Spinal V, CN 12
CN12, CN10, Nucleus ambiguous, Spinal V
CN12 most medial b/c exit ventrally to tongue
Which of the following is NOT a symptom of midbrain disorder? A. Extraocular symptoms B. Facial weakness C. Diplopia D. Somnolence/coma
B. This is a sign of pons disorder
CN3, CN4, aRAS
Which of the following is NOT a symptom of Pons disorder? A. Diplopia B. Facial weakness C. Somnolence/coma D. Vertigo
D. This is a sign of medulla
CN6, CN7, aRAS
Which of the following is NOT a symptom of medulla disorder? A. Coughing B. Choking C. Facial weakness D. Vertigo E. Tongue weakness F. Hiccups
C. Sign of pons
CN8, CN9, CN10, CN 12
Midbrain strokes caused by which vessels?
Basilar
Posterior Cerebral Artery
Posterior communicating
Pons strokes caused by which vessels?
Basilar perforates
Medulla strokes caused by which vessels?
Vertebral artery perforates
Vertebral artery perforator or PICA occlusion causes ____
Lateral medullary syndrome
Anterior spinal artery occlusion causes ____
Medial medullary syndrome
Lacunar ischemic stroke in pons causes ___
pure motor symptoms
Lacunar ischemic stroke in midbrain causes all of the following EXCEPT: A. Weber syndrome B. Ipsilateral hemiparesis C. Oculomotor nerve palsy D. Contralateral hemiplegia
B. Contralateral hemiparesis
Weber syndrome = oculomotor nerve palsy, contralateral hemiparesis, contralateral hemiplegia
Lacunar ischemic stroke in medulla causes all of the following EXCEPT: A. Contralateral body numbness B. Ipsilateral tongue weakness C. Contralateral facial numbness D. Vertigo
C. Ipsilateral facial numbness
Lateral medullary syndrome
Medial medullary syndrome
Locked in syndrome
Lacunar ischemic stroke in bilateral anterior spinal arteries cause
Locked-in syndrome
Hypertensive hemorrhage mainly affects ___
pons
Non-pupil sparing CN3 palsy suggests
Posterior communicating aneurysms
Pupil sparing CN3 palsy suggests
Diabetic 3rd
Name the CN disorder:
Extreme lancing electrical pain worse w/ skin touch, cold, chewing, brushing teeth
Trigeminal neuralgia (CN5)
Treatment for Trigeminal neuralgia
Carbamazepine
Name the CN disorder:
Facial weakness involving forehead and lower face
Bell’s Palsy (CN7)
Nerve regrowth may cause crocodile tears
Name the CN disorder:
Slow growing tumor of Schwann cells
Acoustic Schwannoma (CN8)
Causes hearing loss, imbalance
Genetic: associated w/ NF-2
Evaluation for carcinomatous meningitis includes:
MRI and gadolinium
Lumbar puncture
