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31 Possible Causes for Compound Muscle Action Potential with Low Amplitude, Flaccid Paralysis

  • Tick Paralysis

    Tick paralysis is a rare, ascending, flaccid paralysis that occurs when toxin-secreting Ixodidae ticks bite and remain attached for several days.[msdmanuals.com] Neurophysiological studies reveal low-amplitude compound muscle action potentials with normal motor conduction velocities, normal sensory studies and normal response to repetitive[ncbi.nlm.nih.gov] CONSUMERS: Click here for the Consumer Version Tick paralysis is a rare, ascending, flaccid paralysis that occurs when toxin-secreting Ixodidae ticks bite and remain attached[merckmanuals.com]

  • Infantile Botulism

    paralysis.[pediatricneurologybriefs.com] We conclude that the findings of low compound muscle action potential amplitude in combination with tetanic facilitation or posttetanic facilitation and absence of posttetanic[ncbi.nlm.nih.gov] Low-amplitude compound muscle action potentials, tetanic or post-tetanic facilitation, and the absence of post-tetanic exhaustion support the diagnosis.[ncbi.nlm.nih.gov]

  • Guillain-Barré Syndrome

    Guillain-Barré syndrome (GBS) is the most common cause of acute flaccid paralysis in children.[ncbi.nlm.nih.gov] muscle action potentials reduced amplitude with relatively preserved conduction velocity implicates axonal neuropathy delayed/absent F waves implicates nerve root involvement[step2.medbullets.com] CASE REPORT: An 82-year-old woman presented with acute ascending flaccid paralysis and acute respiratory failure.[ncbi.nlm.nih.gov]

  • Neuromuscular Junction Disorder

    Autonomic dysfunction (blurred vision, diplopia, bradycardia, and hypotension) followed by descending flaccid paralysis occur Wound botulism Results from contamination of[academic.oup.com] EMNG showed signs of myopathy and low compound muscle action potential (CMAP) amplitude (0,15 mV) on lower extremities. Muscle and nerve biopsy were normal.[neurology.org] Differential diagnosis of flaccid paralysis Anterior horn disease Disorders of the NMJ  Polyemyelitis  Amyotrophic lateral sclerosis  Myasthenia gravis  Lambert-Eaton[slideshare.net]

  • Food-Borne Botulism

    Botulism classically presents as acute symmetrical descending flaccid paralysis.[ncbi.nlm.nih.gov] The toxin blocks acetylcholine receptors at neuromuscular junctions, which result in a descending type of flaccid paralysis of voluntary muscles.[cureus.com] There is descending weakness or paralysis, that may extend to complete flaccid paralysis. The patient remains alert.[patient.info]

  • Dermatomyositis

    Low compound muscle action potentials (CMAP) amplitudes may not necessarily indicate a neuropathic process, as it may reflect muscle atrophy and fibrosis.[doi.org] […] in children, called acute flaccid myelitis.[patients.aan.com] Academy of Neurology Possible Treatment for Rare Polio-like Illness Shows No Benefit Researchers have been searching for possible treatments for the polio-like illness causing paralysis[patients.aan.com]

  • Myasthenia Gravis

    In this case, excessive ACh stimulation of striated muscle at nicotinic junctions produces flaccid muscle paralysis that is clinically indistinguishable from weakness due[emedicine.medscape.com] Distinguishing features of the RNS test in LEMS and MG are confirmed in this direct comparison study: the low compound muscle action potential amplitude, decrement at LRS,[ncbi.nlm.nih.gov] A decremental pattern ( 10% difference in compound muscle action potential amplitude between the first and fourth or fifth stimulus) is the usual finding.[emedicine.com]

  • Thyrotoxic Periodic Paralysis

    A 27-year-old male of Malaysian descent presented to the Emergency Department (ED) with rapidly progressive flaccid paralysis that quickly compromised his respiratory effort[ncbi.nlm.nih.gov] […] electrical compound muscle action potential on electromyography and no notable changes in amplitudes after low doses of epinephrinine; and typical acid-base and electrolyte[ncbi.nlm.nih.gov] We present a young Thai man who developed acute flaccid paralysis after receiving pulse methylprednisolone for chronic inflammatory demyelinating polyneuropathy.[ncbi.nlm.nih.gov]

  • Cardiodysrhythmic Potassium-Sensitive Periodic Paralysis

    muscle action potential on electromyography and no notable changes in amplitudes after low doses of epinephrinine; and typical acid-base and electrolyte findings such as[enotes.tripod.com] Episodes of Flaccid Paralysis Hypokalemic periodic paralysis is the most common periodic paralysis.[ncbi.nlm.nih.gov] Andersen-Tawil Syndrome (ATS) is a genetic disorder which causes a distinctive pattern of features; 1) Episodes of muscle weakness and/or flaccid paralysis (i.e periodic paralysis[hkpp.org]

  • Normokalemic Periodic Paralysis

    muscle action potential on electromyography and no notable changes in amplitudes after low doses of epinephrinine; and typical acid-base and electrolyte findings such as[scinapse.io] Description A heterogenous group of inherited disorders characterized by recurring attacks of rapidly progressive flaccid paralysis or myotonia.[berktree.com] In neurologic examination, there was symmetric flaccid paralysis with areflexia and impaired sensation in the lower extremities.[endocrine-abstracts.org]

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