Nervous | Examination

Nervous: Examination
  1. Consciousness
  2. Environmentgeneral appearance
  3. Handednessspeech
  4. Headneckneck stiffness
  5. Cranial nerves
  6. Upper limbs: inspecttonepowerreflexescoordsensory
  7. Lower limbs: inspecttonepowerreflexescoordgaitsensory
  8. Systems: spinecarotid bruitaspiration
Consciousness
Environment
  • Bed: one siderail raised (hemiplegia).
  • Bed: pt.'s bad eye side placedagainst wall so they can't be surprised (stroke).
  • Bed: soft mattress to avoid pressure sores (mobility difficulty).
  • Bed: V-shaped posture pillows since pt. unable to support self.
  • Tables: all medsetc. within reach of non-siderailed arm (hemiplegia).
  • Room: hoistwheelchairwalker (paralysis).
  • Room: NG tube (palsy of throat CN's).
  • Room: ventilatorlife support machines.
General appearance
  • Age of pt. (Parkinson's usu. 45+etc).
  • Chorea (Huntington'srheumatic feverdrugsetc).
  • Ethnicity (scandinavian: multiple sclerosis).
  • Ballismadystonia (usu. drugs)noticeable tremor.
  • Posture: leaning to one side (hemiplegia).
  • Posture: stooped forward (Parkinson's).
  • Only using one hand on tray (hemiplegia).
Handednessspeech
Head
  • Asymmetryunilateral facial drooping (stroke).
  • Ptosis.
  • Serpentine stare (Parkinson's).
  • Licking of lips.
  • Scars of previous operations.
  • Traumainjuryabnormalities. 
  • Mental retardation syndrome facies: Down'sFASetc.
  • Eyes: exophthalamos (thyroxicosis)Kayser-Fleisher rings (Wilson's).
Neckneck stiffness
  • Neck: thymectomy scar (MG).
  • Neck: thyroidectomy scar (thyrotoxicosis).
  • Beware of performing manipulation on a cervical spine injury pt.
  • Hand under occiputflex neck to chin and see if resistance.
    • Resistance causes: raised ICPcervical fusion or spondylosisParkinson'smeningitis.
  • If suspect meningitis (feverphotophobia) do Kernig's sign.
Cranial nerves
Upper limbs: inspect
  • Patient sits over side of bed facing you.
  • For rest of examinationcomparing L side to R side.
  • Asymmetry.
  • Deformities: wrist dropwaiter's tipclaw hand.
  • Muscle wastingfasciculations. Include shoulder girdle.
  • Tremor:
    • Intention (cerebellar).
    • Resting with pill-rolling (Parkinson's).
    • Action tremor (BAT:  Benign essential tremor syndromeAnxietyThyrotoxicosis).
  • Feel hand for heat (thryrotoxicosis)grip.
  • Pronator drift: pt's eyes closedarms extendedwith palms up. Tap pt'sarms briskly downward (arm drifting into pronation: UMNLcerebellarpost. column loss).
  • Pseudoathetosis from proprioceptive loss.
  • Muscle bulktenderness.
Upper limbs: tone
  • Ask pt. if any tenderness in any jointsso won't hurt them whenmanipulating them for tone.
  • Grasp under elbow and wristand rotate the 2 joints to assessresistance.
    • If Parkinson'scogwheel rigidity in wrist [combination of tremor andincreased tone].
    • If Parkinson'slead pipe resistance when flexing forearm.
  • If ulnar nerve indicatedFroment's sign:
    • Give pt a piece of paper for each hand.
    • Ask pt to grasp papers by moving straightened thumb to radial side ofindex finger.
    • Affected thumb is forced to flex at interphalangeal joint to grip paper.
  • If median nerve indicatedpen touching test:
    • Pt's hand supine.
    • Dr. hold's pen above thumb
    • Ask pt. to lift thumb to touch it.
    • Affected thumb can't touch pen. 
Upper limbs: power
  • Assess shoulderelbowwristfingers.
    • Assess by ability to push against Dr's hand.
    • Assess across a single joint at a time [eg: Dr's hand on bicepnotforearmto assess shoulder power]. 
  • If MG suspected:
    • Pt. holds arms above head.
    • MG pt. will lose powerafter contractions.
  • See Power Scale Reference.
Upper limbs: reflexes
Upper limbs: coordination
  • Pt. finger touches Dr's fingersthen to pt's nose testing for dysdiadochokinesiarebound.
  • Dysdiadochokinesia:
    • Pt's palm on dorsum of their opposite hand.
    • Pt flips their hand quickly so the two hand dorsums touch.
    • Repeat quickly.
Upper limbs: sensory
  • Dorsal columns (vibration):
    • Place on sternum [the last area lost] so pt. knows how the buzzingfeels.
    • Pt's eyes shut and 128 Hz fork on distal interphalangeal joint: ask iffelt.
    • If can feelask pt. to say when it stopsthen later stop it.
    • If deficient: assess dermatomes at wristelbowshoulderboth anteriorand posterior.
    • See Dermatomes Reference.
  • Dorsal columns (proprioception):
    • Grasp pt's distal phalynxmove up and down to show what to do.
    • Tell pt. to close eyes and repeat thissaying whether it's up or down.
  • Spinothalamic (painforget temperature):
    • Sterile toolpick or broken wood tongue depressor on forehead or anteriorchest.
    • Pt. closes eyestells if sharp or dull.
    • Stick each dermatome looking for corddermatomeperipheral nervestocking glove.
  • Light touch: cotton wool. Dab skin lightlydon't stroke.
  • If lesionfeel for thickened nerves:
    • Ulnar at elbow
    • Median at wrist
    • Radial at wrist
    • Axilla.
Lower limbs: inspect
  • Asymmetry.
  • Muscle wastingfasciculationstremor.
  • Muscle bulk: quadsanterior tibials.
  • Foot bruisinginfections from peripheral neuropathy.
Lower limbs: tone
  • Orthopods may roll legs for a quick preliminary inspection of tone.
  • Tone of kneesankles.
  • Test clonus by pushing lower end of quads sharply down towards knee (sustained contractions:UMNL).
Lower limbs: power
  • Power: hipskneesankles. "Lift legdon't let me push itdown". "Push leg downdon't let me push it up".
  • See Power Scale Reference.
Lower limbs: reflexes
  • Knee (L3-4).
  • Ankles (S1-2).
  • Plantar (L5S1-2).
  • Ankle clonus test:
    • Place pt's knee bentthigh externally rotated.
    • Dr lifts pt's heel in Dr's cupped hand.
    • Dr quickly dorsiflexes pt's ankle and holds it flexed for 3 seconds.
    • Clonus if sustained movement afterwards.
  • See DeepTendon Reflexes Reference.
Lower limbs: coordination
  • Heel-shin test:
    • Pt kicks a heel outthen touches that heel to other shin.
    • Repeat in a smooth motion loop.
    • Alternatively: heel sliding up and down on opposite shin.
  • Toe-touching test.
  • Tapping of feet.
Lower limbs: gait
  • Walk few feet then walk back.
  • Notice signature gaits:
    • Trendelenberg gait (proximal myopathy).
    • Shuffling gait (Parkinson's).
    • High-stepping gait (foot drop).
    • Hemiplegic gait [swinging one leg in lateral arc] (usu. stroke).
  • Walk heel to toe (hard: midline cerebellar).
  • Walk on heels (hard: L4-5 footdrop).
  • Squat or sit then stand up (proximal myotrophy).
  • Romberg sign positive if unsteadiness is worse when eyes closed.
Lower limbs: sensory
  • Sensory pin prickvibrationproprioceptionlight touch. Same as was forUpper Limbs.
  • If peripheral sensory losstry to establish sensory level. See DermatomesReference.
  • Examine sensation in saddle region.
  • Test anal reflex (S2-4).
Spine
  • Back: deformityscarsneurofibromas.
  • Palpate for tenderness over vertebral bodies.
  • Straight leg raising test:
    • Pt tries to lift straight leg.
    • Full lifting will be prevented if slipped disc.
  • For moreSee Rheumatoid Examination.
Carotid bruit
Aspiration
  • Paralyzed pt may have aspirated fluid. See PulmonaryExamination.
  • Feeding assistance devicessuch as PEG (dysphagiausu. 2º toneurological damagelike stroke).

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