Cranial Nerve Clinical Presentation Flashcards
A lesion affecting the olfactory nerve will cause loss of what sense?
Smell
A lesion affecting the optic nerve will affect what sense?
Vision
A patient presents with ptosis and a dilated fixed pupil. What nerve is most likely to be affected?
Oculomotor
A lesion of the oculomotor nerve results in what clinical presentation?
‘Down and out’ eye
A lesion of the trochlear nerve will cause horizontal/vertical diplopia
Vertical (superior oblique affected)
How many a lesion of the trigeminal nerve present clinically?
Trigeminal neuralgia
Loss of corneal reflex and facial sensation
Mastication muscle paralysis
A patient presents with horizontal diplopia. What nerve has been affected?
Abducens
How may a patient with a facial nerve lesion present clinically?
Flaccid facial paralysis
Loss of corneal reflex
Loss of taste (ant 2/3rds)
How may a patient with a vestibulocochlear nerve lesion present?
Hearing loss
Vertigo
Nystagmus
A lesion of the glossopharyngeal nerve will cause what reflex to become defective?
Gag reflex
In a vagus nerve reflex, the uvula deviates away from/towards the affected side
Away from
A patient struggles to turn their head. What cranial nerve is most likely affected?
Accessory
A patient has a lesion of the right hypoglossal nerve. To which side will his tongue be pointing?
The right
What are the afferent and efferent limbs of the corneal reflex?
Afferent = ophthalmic nerve Efferent = facial nerve
What are the afferent and efferent limbs of the gag reflex?
Afferent = glossopharyngeal nerve Efferent = vagus nerve
