Browse Cards

Critical Illness Myopathy Edx Findings in general will present exactly the same as {{c1::myopathies}}

{{c1::tarsal tunnel sndrome}}: tibial n. injured by compression under the flexor retinaculum in the medial ankle

Single Fiber EMG Paramters {{c1::Jitter}} : caused by a increased delay in the {{c2::inter-potential}} {{c2::discharges}...

{{c1::Onset/distal latency (CMAP)}} is the time required for an electrical stimulus to initiate an evoked potential (fa...

Iliacus Nerve: {{c1::Femoral}} Roots: {{c2:: L2 , L3 }} no major psoas Nerve: {{c1::lumbar spinal nerves}} Roots: {{c2:...

CTS SEVERITY NCS {{c1::Moderate}} SNAP: Prolonged latency plus decreased amplitude CMAP: Prolonged latency

Treatment of serratus anterior injury/injury to the long thoracic nerve : same 2 for both (a) acute stage, pain reductio...

radial n. Injury at the spiral-groove is also known as {{c1::Saturday night}} palsy or {{c1::honeymooner’s}} palsy

Deltoid Nerve: {{c1::Axillary}} Roots: {{c2:: C5 , C6::2 }}

{{c1::Axonal Degeneration}}: A nerve injury that begins in a “ dying back ” fashion and affects the nerve distally and ...

Riche-cannieu While recording over the APB muscle, CMAP is absent with {{c1::median}} nerve stimulation but presen...

{{c1::complex repetetive discharges}} sound like a {{c2::motor boat}} spontaneous, polyphasic APs originating from a...

Firing Rate : This is the number of times a {{c1:: MUAP fires per second}}. It is expressed in {{c2::Hz}} and is calcul...

Supra-spinatus & infra-spinatus & teres minor Nerve: {{c1::Suprascapular, Suprascapular, Axillary::3}} Roots: {{c2:: C5 ...

Arcade of Struthers Syndrome may cause... {{c2::Ulnar claw hand}} : unopposed {{c1:: extensor digitorum communis ( EDC...

Sunderland Classification TYPE 1 {{c1::Conduction block ( neuropraxia )::2}} TYPE 2 {{c2::Axonal injury ( axonotmesis ):...

demyelination affects the speed of signal conduction along a nerve thus NCS's (CMAP and SNAP) parameters effected in...

NMJ d/o Edx If low CMAP amplitude, should be followed by a {{c1::10 second::time}} {{c1::maximum voluntary contraction}}...

Radiculopathy {{c1::can::can / cannot}} occur without structural abnormalities on MRI or EMG

General Rule of Thumb An entrapment mononeuropathy: is commonly named for the muscle compressing the nerve. That muscl...

Quantitative EMG provides a more detailed measurement of the MUAPs. It is a better indication of waveform {{c1::duratio...

Flexor hallucis longus Nerve: {{c1::Tibial}} Roots: {{c2:: L5 , S1 , S2::3 }}

Tibial N. innervates Superficial/proximal {{c1::Popliteus}} {{c1::Plantaris}} {{c1::Gastrocnemius}} {{c1::Soleus}} Deep/...

Extensor carpi radialis Nerve: {{c1::Radial}} Roots: {{c2:: C6 , C7::2 }}

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Conduction Block

sural neuropathy, EDX findings : NCS SNAP: {{c1::Abnormal sural sensory}} CMAP: {{c1::not applicable}} EMG {{c1::Not app...

lateral femoral cutaneous nerve, EDX findings : NCS SNAP: {{c1::Abnormal lateral femoral cutaneous nerve (not typicall...

NCS of demeylinating injuries Amplitude typically normal : but may be decreased due to... {{c1::temporal dispersion}}...

Autonomic Nerve Studies {{c1::Norepinephrine synthesis and release}} Sympathetic Skin Response Sinus Arryhthmia Valsalva...

MUSCULOCUTANEOUS MONO-NEUROPATHY In General: Injury to the {{c1::distal::proximal/distal}} portion of the nerve is mor...

Pronator Teres Syndrome EDX findings: NCS: Abnormal {{c2::median nerve*}} SNAPs Abnormal CMAPs at {{c2::above elbow si...

{{c1::H-reflex}} is an NCS analogue to a monosynaptic reflex

{{c1::Reduced recruitment::recruitment pattern}} most commonly seen in neuropathic conditions

{{c1::Neuromyotonic discharges}} : high-frequency, repetitive discharges with progressively decremental amplitudes Hal...

A grid is projected on the screen with the horizontal axis representing {{c1::sweep speed ( msec )::name, unit}} and t...

Abnormal spontaneous activity from muscle fibers includes: {{c1::FIBs}} {{c1::PSWs}} {{c2::Complex repetitive discharg...

AIN branches from the median nerve innervate (3 P's): {{c1::Flexor digitorum profundus (FDP 1 and 2)}} {{c1::Flexor poll...

MUAP Duration increases (>15 msec) as the motor unit territory increases 2/2 {{c1::collateral sprouting/reinervation::...

NMJ disorders EDx findings NCS : SNAP : {{c1::normal}} ^ CMAP : {{c2::normal}} & o/p latency and conduction velocity ...

Unncommon Radiculopathy causes H —{{c1::Herpes zoster}} I —{{c2::Inflammatory::whole category}} M —{{c3::Metastasis}} A ...

radial nerve cutaneous distribution innervated above the spiral groove - {{c1::posterior cutaneous nerve of the arm}} ...

Motor Neuron Disease Edx findings EMG Study at least {{c5::3}} limbs Classic Needle Finding: {{c1::Active denervation wi...

anterior tarsal tunnel syndrome clinical presentation may have weakness, and atrophy of the {{c1::EDB}} numbness and ...

Single Fiber EMG SFEMG is the most sensitive test for {{c1::NMJ disorders}} but has low specificity Abnormalities can al...

Brachioradialis Nerve: {{c1::Radial}} Roots: {{c2:: C5 , C6 ::2 }}

Tibial nerve innervates m. (distal to tarsal tunnel) Medial plantar nerve {{c1::Abductor hallucis}} {{c1::Flexor hallu...

Clinical Presentation of Poly Neuropathies acquired polyneuropathies : {{c1::Burning / Pain::sx}} {{c1::Paresthesias::s...

Low-Rate Repetitive Stimulation: This repetitive stimulation test is performed at a rate of {{c1::2}} to {{c1::3}} Hz Ea...