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32 Possible Causes for Compound Muscle Action Potential with Low Amplitude, Poliomyelitis

  • Tick Paralysis

    During an epidemic of poliomyelitis, tick paralysis should always be kept in mind as a possible alternative diagnosis. Received September 30, 1947.[] Neurophysiological studies reveal low-amplitude compound muscle action potentials with normal motor conduction velocities, normal sensory studies and normal response to repetitive[] , whereas others contend that Landry's paralysis is an independent symptom complex, not due to the specific virus of poliomyelitis, but due to some unknown form of toxin,[]

  • Guillain-Barré Syndrome

    WITH the virtual elimination of poliomyelitis, Guillain—Barré syndrome has become the most common cause of acute generalized paralysis, with an annual incidence of 0.75 to[] muscle action potentials reduced amplitude with relatively preserved conduction velocity implicates axonal neuropathy delayed/absent F waves implicates nerve root involvement[] Similar acute weakness can result from myasthenia gravis, botulism, poliomyelitis (mainly outside the US), tick paralysis, West Nile virus infection, and metabolic neuropathies[]

  • Rabies

    The differential diagnosis of rabies includes tetanus, poliomyelitis, Guillain-Barre syndrome, viral encephalitis and poisonings and drugs. E.[] Motor nerve conduction studies showed decreased conduction with dispersion of compound muscle action potential, low amplitude with prolonged distal latency and decreased nerve[] Viral : herpes simplex, herpes zoster, cytomegalovirus, Epstein-Barr virus, enteroviruses (poliomyelitis, Coxsackie virus, echovirus), human T-cell, leukemia virus, human[]

  • Monomelic Amyotrophy

    The cause of amyotrophy in each case is most consistent with prior: (1) wildtype poliovirus myelitis; (2) "polio-like" virus myelitis, or (3) vaccine associated paralytic[] The nerve conduction studies frequently demonstrate low-amplitude compound muscle action potentials (CMAPs) commensurate with degree of weakness and atrophy.3,8 The electromyographic[] All cases were sporadic, and there was no history of poliomyelitis. CK, anti-ganglioside antibodies, motor and sensory conductions were normal.[]

  • Neuropathy

    Robinson, Post‐polio syndrome and the late effects of poliomyelitis: Part 2. treatment, management, and prognosis, Muscle & Nerve, 58, 6, (760-769), (2018).[] Patients have relatively normal nerve conduction velocities but low amplitude sensory nerve action potentials and compound muscle action potentials.[]

  • Bickerstaff Brainstem Encephalitis

    Poliomyelitis with sensory signs.[] (absent R2) suggested central dysfunction, whereas results of facial nerve conduction studies (low amplitudes of compound muscle action potentials), F-wave and H-reflex studies[] The electroencephalographic findings (diffuse slow activity), median somatosensory evoked potential (absent cortical N20 with normal cervical N13), and blink reflex studies[]

  • Food-Borne Botulism

    Toxin assays Sometimes electromyography Botulism may be confused with Guillain-Barré syndrome (Miller-Fisher variant), poliomyelitis, stroke, myasthenia gravis, tick paralysis[] Electrophysiologic tests of such patients show reduced compound muscle action potentials (CMAPs), low amplitudes and short durations of motor unit potentials (MUPs), and mild[]

  • Miller-Fisher Syndrome

    15] Even those who have previously experienced Guillain–Barré syndrome are considered safe to receive the vaccine in the future. [4] Other vaccines, such as those against poliomyelitis[] CBs resolved, distal compound muscle action potential (CMAP) amplitudes increased and SNAPs normalized on subsequent testing.[] Spinal cord : cord compression , poliomyelitis , transverse myelitis. Peripheral nerve : vasculitis , lead poisoning , porphyria .[]

  • Infantile Botulism

    The principal differential diagnoses are Landry-Guillain-Barré syndrome, poliomyelitis, myasthenia gravis and infant muscular atrophy.[] We conclude that the findings of low compound muscle action potential amplitude in combination with tetanic facilitation or posttetanic facilitation and absence of posttetanic[] Poliomyelitis is often associated with asymmetric clinical findings and a cerebrospinal fluid pleocytosis, which is not seen in infant botulism. 14 , 17 Infantile spinal muscular[]

  • Distal Hereditary Motor Neuropathy Type 1

    Encephalitis Viral encephalitis Herpesviral encephalitis Limbic encephalitis Encephalitis lethargica Cavernous sinus thrombosis Brain abscess Amoebic Spinal cord Myelitis : Poliomyelitis[] Compound muscle action potentials are either absent or low amplitude with motor conduction velocities ranging from 3 to 10 meters per second.[] […] syndrome Phenylketonuria Phosphoribosylpyrophosphate synthetase superactivity Phosphoserine aminotransferase deficiency Pitt-Hopkins syndrome Pitt-Hopkins-like syndrome Poliomyelitis[]

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