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Neurological Exam. Duc Tran, M.D. August 2003. Neurological Exam. Mental Status Cranial Nerves Motor Sensory Reflexes Coordination Gait. Neuroaxis. Central Brain Spinal Cord Peripheral Root Plexus Nerve Neuromuscular Junction Muscle. Intracranial. Supratentorial Frontal
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Neurological Exam Duc Tran, M.D. August 2003
Neurological Exam • Mental Status • Cranial Nerves • Motor • Sensory • Reflexes • Coordination • Gait
Neuroaxis • Central • Brain • Spinal Cord • Peripheral • Root • Plexus • Nerve • Neuromuscular Junction • Muscle
Intracranial • Supratentorial • Frontal • Parietal • Temporal • Occipital • Infratentorial • Cerebellum • Brainstem
Supratentorial • Aphasia - dominant • Aprosodias – nondominant • Alexia • Agnosia • Apraxia • Consciousness • Memory • Motor – cortical vs. subcortical • Personality • Seizures - cortical • Sensation - parietal • Vision – occipital
Infratentorial • Diplopia • Dysarthria • Dysphagia • Decreased facial sensation/perioral numbness • Dystaxia/Ataxia • Dizziness/Vertigo • Nystagmus • Consciousness • Cross findings
Cranial Nerves • I - Olfactory. • II - Optic. Vision. Pupil reflex. • III - Eye movement. Pupil response. • IV - Eye movement. • V - Facial sensation. Mastication. • VI - Eye movement. • VII - Facial movement. • VIII - Balance/Hearing. • IX - Taste. Sensation pharyngeal muscles. • X - Sensation larynx, gut. Motor to larynx, pharynx, palate. • XI - Motor to sternocleidomastoid/trapezius. • XII - Motor to tongue.
Myelopathy • Weakness • Reflex changes • Sensory loss • B/B dysfunction • Ascending Level of Dysfunction
UMN Weakness Spastic Hyperreflexia LMN Weakness Flacid Atrophy Fasciculations Hyporeflexia EMG/NCV MotorNeuron
Root/Radiculopathy • Pain • Weakness in distribution of root • Sensory loss – may not be dense • Reflex changes – helps to localize the level • Rule of 7
Nerve • Polyneuropathy – eg. diabetes • Mononeuropathy – eg. CTS • Multiple mononeuropathies – eg. lead
Polyneuropathies • Weakness – distal>proximal • Sensory loss – distal>proximal • Reflex changes – distal>proximal • Exceptions - CIDP
Mononeuropathies • Cardinal movements of the thumb • Extension • Opposition • Adduction • Cardinal movements of the lower extremity • Hip flexion/knee extension • Hip adduction • Hip abduction/hip extension • Knee flexion/ankle dorsi-flexion/ankle plantar flexion/inversion/eversion.
NMJ • Weakness – proximal>distal • No sensory loss • No reflex changes • Fatigue
Myopathy • Weakness – proximal>distal • No sensory changes • No reflex changes • Atrophy • Myotonia • Cramping