HELP SUELA PASS

Brachial Plexus

100

In the setting of clavicular Trauma, which portion of the brachial plexus is most susceptible to injury?

The Median cord

200

Which of the following is the most common electrodiagnostic finding in true neurologic TOS?

Absent medial antebrachial cutaneous snap

300

Medical cord, lower trunk c8-T1

Medical antebrachial cutaneous 

400

Lateral cord, upper trunk c5-c6 sensory

Lateral antebrachial cutaneous

500

When an axon loss lesion is located distal to the DRG (peripheral nerves or plexus) SNAPS will be? 

a. Normal

B. Absent

C. Reduced

D. Absent or reduced

D. Absent or reduced

Common and Uncommon Entrapments

100

Most common entrapment

Carpal Tunnel Syndrome

200

Occurs where the median nerve passes between the deep and superficial heads of pronator teres

Pronator Syndrome

300

Claw hand deformity. Numbness and tingling of 1/2 of4th and all of 5th digits

Ulnar entrapment at the elbow

400

Spiral groove- saturday night palsy

Radial nerve entrapment

500

Hip and/or demur fractures/dislocations, Trauma, hematomas from hip surgery, piriformis syndrome

Causes of sciatic neuropathy

Diseases and trauma of peripheral nervous system

100

Classifcations of Nerve injuries

Neurapraxia, Axontmesis, Neurotmesis

200

Pure demyelination lesions. Axon completely intact only the myelin is disrupted. Conduction block. Prognosis- very good, recover usually complete within 6-8 weeks

Neurapraxia

300

Axonal damage results from Wallerian degeneration. Prognosis- dependent on the site and severity of the injury. Regeneration via collateral sprouting fairly good depending on severity of lesion. Regeneration via axonal regeneration less favorable in more severe injury. 

axonotmesis

400

Most severe, often compete axon loss injury. All waveforms are absent distal and proximal to the lesion

Neurotmesis

500

Referred to as Neuronopathies. Friedreich's ataxia, Metastatic related Neuronopathies, sjogrens syndrome. 

Disorders of the Dorsal root ganglia

Nerve Root levels

100

Unison of all the l4-s2 roots, consists of peroneal (posterior division) and tibial (anterior division)

the Sciatic nerve

200

C5-C6 innervated muscle

Deltiod

300

L2, L3, L4 innervated nerve. Hip adductors and sensory branch supplies small area of upper medial thigh

The obturator nerve

400

L2,L3,L4-hip-knee flexion and extension. Psoas/iliacus, quadriceps, saphenous sencory

The femoral nerve

500

l5, S1, S2. Innervates plantar flexors and inverters. Sensory nerves are medial and lateral plantar. 

Posterior tibial nerve 

Neuromuscular Junction

100

Indentation between nerve terminal and muscle membrane. ACH flows across to bind at receptor sites on muscle membrane. 200-500 deep

Synaptic Cleft

200

Pre-synaptic disorders i.e. Lambert-Eaton Syndrom,botulism.  post-synaptic disorders i.e. myasthenia gravis

Neuromuscular diseases

300

Rare disease that involves limited number of ACH quanta to be released. Pain and Cramps are common. Proximal>distal- shoulders and hips affected more than hands and feet. Weakness peaks after resting. 

LAMBERT-Eaton syndrome LEMS

400

Involves the number of ACH receptors. IgG antibodies attack ACH receptors. 12-15% or greater decrease in amplitude post exercise with supramax resp. 

Myesthenia Gravis 

500

Mitichondri, Acetylcholine, Nerve impulses 

Nerve Terminal