Examinations Flashcards
CN I?
Olfacotry - sense of smell
Damage = loss of smell
CN II?
Optic - vision (including detecting light)
Damage = reduced vision, loss of accomodation and loss of pupilary reflex
CN III?
Occulomotor - eye muscles and pupillary contraction
Damage = ptosis, eyes look down and out, dilated pupils
CN IV?
Trochlear - eye muscles
Damage = verticle diplopia (when looking down and inwards e.g. when reading or walking down stairs)
CN V?
Trigeminal (opthalmic, maxillary and mandibular branches) - sensation to the face and muscles of mastication
Damage = loss of corneal reflex, loss of facial sensation and difficulty chewing. Loss of jaw jerk in UMN lesion
CN VI?
Abducens - eye muscles
Damage = horizontal diplopia (when looking outwards), the eye will rest in adduction and can not be abducted
CN VII?
Facial - taste to the anterior 2/3rds of the tongue, muscles of facial expression and glands e.g. lacrimal/submandibular/sublingual glands
Damage = Paralysis of the facial musles on the ipsilateral side = facial weakness, mouth droop and flattening of the nasolabial fold. Also loss of taste to anterior tongue
If UMN damage = forehead sparring, if LMN damage = forehead paralysis
CN VIII?
Vestibulocochlear - hearing and balance
Damage = vertigo and nystagmus (if vestibular involvement), hearing loss and tinnitus (if cochlear involvement)
CN IX?
Glossopharygneal - taste to psoterior 1/3 of the tongue, sensory part of the gag reflex
Damage = loss of gag reflex, uvula deviates away from the damged side
CN X?
Vagus - muscles of speech, motor part of the gag refelx and parasympathetic innervation to the heart and GI system
Damage = Bouvine cough, uvula deviates away from the damged side
CN XI?
Accessory - Trapezius (allows shoulder shrugging) and sternocleidomastoid (allows the head to turn)
Damage = difficulty turning the head and shrugging the shoulders
CN XII?
Hypoglossal - tongue muscles
Damage = tongue deviates towards the damged side
What is Rinne’s test?
Place a tuning fork on the mastoid process until it is no longer heard then place it next to the external acoustic meatus.
Bone better than air = conductive hearing loss
Air and bone both decreased = sensorineual hearing loss
What is Weber’s test?
Place a vibrating tuning fork on the forehead in the midline
Conductive hearing loss = louder in abnormal ear
Sensorineural hearing loss = louder in normal ear
Describe the MRC grading of motor power?
5/5 = movement against gravity with full power against resistance
4/5 = movement against gravity with reduced power against resistance. 4-, 4 and 4+ = movement against slight, moderate and
strong resistance respectively
3/5 = movement against gravity only without applied resistance
2/5 = muscle contraction with active movement only when gravity is eliminated
1/5 = flicker of muscle contraction seen, no movement
0/5 = no muscle contraction
What would you expect to see in cerebellar dysfunction?
Dysarthria when saying repeated letters, intention tremor, nystagmus, uncoordination when attempting rapid repetitive movements, ataxia, wide stance and inability to walk toe to heel
Which nerve roots supply the lower limb reflexes?
Knee = L3/4 Ankle = L5/S1 Plantar = L5/S1/S2
Which nerve roots supply the upper limb refelxes?
Biceps = C5/6 Triceps = C7 Supinator = C6
What is normal chest expansion?
3-5cm
What do pectus excavatum and pectus carinatum mean?
Funnel chest and Pigeon chest
When might you feel parasternal heaves?
Ventircular hypertrophy (particularly left ventricular)
Which position do you put the patient in to best hear mitral stenosis and aortic regurgitation?
Mitral stenosis = roll the patient onto their left side
Mitral regurg = lean the patient forward
What causes pronator drift and ankle clonus?
UMN lesion
What is the Romberg’s test? What does it show?
The patient stands with their arms out in front and their hands supinated.
If they can not do this with their eyes open = cerebellar lesion
If they can with their eyes open but not with them closed = loss of proprioception
Describe the hemiplegic gait?
Patient lurches their upper body towards the unparalysed side to elevate the pelvis and swings the paralysed leg round. The plantar flexed foot of the paralysed leg scrapes the floor
Describe the apraxic gait?
Patient is slow and shuffling - stride lenght is markedly reduced and balance can be lost when turning - wide base.
Parkinsons gait is this but with additional loss of arm swing and with narrow base
Describe the steppage gait?
Foot drop forces the patient to flex the knee and lift the foot high to clear their toes from the ground