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Recruitment: Early Onset With Minimal Effort (myopathies) MUAP presentation {{c3::Unstable}} possible cause variable amp...

High-Rate Repetitive Stimulation NMJ disease and Amplitude Changes {{c1::LEMS}} = 200%–300% increment {{c1::MG}} = Dec...

{{c3::Adductor pollicis}} Nerve: {{c1::Ulnar nerve}} Roots: {{c2:: C8 , T1 ::2 }}

Motor Neuron Disease Edx findings NCS SNAP: {{c1::normal}} ** CMAP: {{c1::typicaly normal}}: conduction velocities and...

Lambert–Eaton myasthenic syndrome ( LEMS , myasthenic syndrome): disorder resulting in decreased quantal content leavi...

Pseudofacilitation It represents a decrease in {{c1::temporal dispersion}} due to increased {{c2::synchronicity}} of mus...

{{c1::Myotonic discharges}}

{{c1::Postactivation Exhaustion (PAE)}} : This response is seen as a CMAP amplitude decreases. It occurs with a {{c2::L...

Motor unit {{c1::duration::polyphasicity/duration}} is a better measure of pathology

Recruitment: Early Onset With Minimal Effort (myopathies) MUAP presentation short-duration, small amplitude possible cau...

Clinical Presentation of Peripheral Polyneruopathies A classic triad has been described presenting in the lower limbs >...

Radiculopathy

{{c1::Double crush syndrome}} from concomitant DMT2 or cervical radiculopathy increases the risk of CTS

Axonal Injury {{c2::O/P Latency }} and {{c2::CV}} should NOT be affected Unless the {{c1::largest/fastest fibers::2}} ar...

TYPE II FIBER ATROPHY {{c1::Steroid myopathy}} {{c2::Myasthenia gravis}} Deconditioning

{{c1::Moderate CTS::CTS severity}}: continuous sensory deficits in the median nerve distribution, involving the entire ...

{{c3:: Flexor pollicis longus }} Nerve: {{c1::Ant. interosseous of median nerve.}} Roots: {{c2:: C8 , T1::2 }}

{{c1::Valsalva ratio}} study: heart rate varies in response to changes in blood pressure and intrathoracic pressure via...

{{c4::Recruitment ratio (RR)}}: This has been used to represent recruitment capabilities, especially when a patient demo...

CTS E DX findings {{c1::Sensory::Motor/Sensory}} studies are more sensitive because larger fibers are more affected th...

NMJ disorder Edx findings EMG : Can be normal or abnormal In severe cases, abnormal spontaneous activity can be seen {{...

Flexor digitorum profundus Nerve: Digits 2 & 3 {{c1::Ant. interosseous branch of median}} Digits 4 & 5 {{c1::Ulnar}} ...

Tarsal tunnel syndrome Clinical presentation Involves all muscles innervated by the tibial nerve distal to the tarsal tu...

Ulnar Motor study MGA can be recognized... usually more apparent when recording from the {{c1::FDI::site 1}} muscle, th...

Rhomboid Major and minor Nerve: {{c1::Dorsal scapular}} Root: {{c2::C5::1}}

Weakness of only the ankle dorsiflexors and {{c1:: ankle evertors}} helps to clinically differentiate a {{c2::commo...

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Tarsal tunnel, EDX findings : NCS SNAP: Abnormal {{c1::medial and lateral plantar nerve::2 same}}. Normal {{c1::calcane...

contents of the Tarsal tunnel {{c1::Tibialis Posterior}} {{c1::flexor Digitorum longus}} {{c1::Post. Tib A.}} {{c1::Pos...

Single Fiber EMG This is a study that monitors the parameters of single muscle fiber APs. It is useful if {{c1::repetit...

Stimulus Artifact This is a defect seen at the time the stimulus is applied to the skin and represents current spread to...

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NMJ d/o Edx CMAP amplitude will show > {{c1::10}} % {{c1::decrement}} on low rate rep. stim

{{c2::myotonic discharges}} are classicly associated w/ {{c3::myopathies::disease category}} {{c4::biphasic::waveform}...

Obturator n. injury During ambulation, they present with a {{c1::wide-based}} and {{c1::circumducting}} gait

SUPERFICIAL PERONEAL (FIBULAR) NEUROPATHY Clinical presentation: c/o of pain, numbness, and/or paresthesias or loss of s...

Femoral Neuropathy, EDX findings: NCS: Abnormal {{c1::saphenous nerve SNAP}} Abnormal {{c1::rectus femoris CMAP}} EMG: -...

{{c1::Single-fiber}} needle electrode

In MGA one can see an artificially {{c1:: fast CV::increased/decreased, parameter}} this is 2/2 an unreasonably sma...

{{c1::Axonal regrowth}} is a process of repair in which the nerve regrows down its original path It will travel approxi...

Repetitive Nerve Stimulation ABNORMALITY A >{{c1::10}}% decrease in amplitude from the {{c2::1st}} to {{c2::5th}} wavef...

SUPRASCAPULAR NEUROPATHY This is the only peripheral nerve injury at the {{c1::trunk}} level. It is the most commonly...

Dorsal ulnar cutaneous ( DUC ) nerve: normal or abnormal NCS are {{c1::normal}} in a handle-bar neuropathy at the wri...

paraneoplastic neurologic syndromes (PNS) related cancers small cell lung cancer {{c1::lymphoma}} {{c1::myeloma}}

4 Median n. FOREARM muscles ( non-AIN m's ) {{c1::Pronator teres}} {{c1::FCR}} {{c1::Palmaris longus}} {{c1::Flexor dig...

Cubital tunnel syndrome v.s. Retro Condylar Groove entrapment muscles involved include all ulnar n. innervated m’s Save ...

MG pathophys disorder of neuromuscular transmission due to an autoimmune response in which polyclonal antibodies are di...