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140 Possible Causes for Normal Compound Motor Action Potentials

  • Neuropathy

    […] velocities are at or slightly below the normal limit and compound motor action potentials may only have slightly reduced amplitudes [ 16, 19 ].[ncbi.nlm.nih.gov] Typically, nerve conduction studies confirm severe impairment of sensory nerve conduction velocities and absent sensory nerve action potentials, but motor nerve conduction[ncbi.nlm.nih.gov]

  • Asthma

    Results The phrenic compound motor action potential area was reduced, compared with controls, and all the patients had normal diaphragm electromyography.[ncbi.nlm.nih.gov] Conclusion It is possible that a reduced phrenic compound motor action potential area, without electromyography abnormalities, could be related to diaphragm muscle fiber abnormalities[ncbi.nlm.nih.gov]

  • Polyneuropathy

    […] nerves, the former amplitude of negative phase of compound muscle action potential (CMAP) decreases by 50% or more.[nnjournal.net] The effects of this can be seen by repetitive electrical nerve stimulation with a recording of the amplitude of the compound muscle action potential (summation of all muscle[dartmouth.edu] In certain cases, there is also absence of F waves; (D) partial blockade of motor nerve conduction: when comparing the proximal and distal end of the normal segments of peripheral[nnjournal.net]

  • T3 Thyrotoxicosis

    A nerve conduction studies/electromyogram showed normal motor and sensory velocity conduction with a small amplitude compound motor action potential, indicative of likely[ncbi.nlm.nih.gov]

  • Epilepsy

    Electromyography (EMG) showed slowed motor and sensory nerve conduction velocities and distal motor latency delay accompanied by normal compound motor action potential (CMAP[ncbi.nlm.nih.gov] The amplitude of cortical components of brainstem auditory-evoked potential (BAEP) was normal with slightly prolonged latencies.[ncbi.nlm.nih.gov]

  • Autonomic Neuropathy

    […] velocities are at or slightly below the normal limit and compound motor action potentials may only have slightly reduced amplitudes [ 16, 19 ].[ojrd.biomedcentral.com] Typically, nerve conduction studies confirm severe impairment of sensory nerve conduction velocities and absent sensory nerve action potentials, but motor nerve conduction[ojrd.biomedcentral.com]

  • Tick Paralysis

    The routine motor nerve conduction study showed normal compound muscle action potential amplitude.[ncbi.nlm.nih.gov] 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] The stimulated jitter analysis of the orbicularis oculi muscle showed normal jitter with no blocking.[ncbi.nlm.nih.gov]

  • Pallidopyramidal Syndrome

    Compound motor action potential amplitudeshe th(red353M.C. Kruer et al. / Gene 537 (2014) 352356Fig. 1. Index family. (A) Family pedigree.[dokumen.tips] Nerve conduc-tion studies (done at the age of 15 years) showed normal motor con-duction velocity (MCV) and distal motor latency (DML) of median,ulnar and tibial nerves.[dokumen.tips]

  • Spinal and Bulbar Muscular Atrophy

    Initial nerve conduction studies showed statistical difference from normal controls, especially decreased amplitudes of compound motor action potential (CMAP) and sensory[ncbi.nlm.nih.gov] Motor nerve conduction velocities were normal with reduced compound muscle action potential amplitudes of hand and foot muscles.[ncbi.nlm.nih.gov]

  • Non-Syndromic Ocular Stickler Syndrome Type 1 

    Motor studies were all normal apart from the reduced common peroneal compound motor action potential (CMAP) amplitude in subject 1-III:17.[academic.oup.com] motor action potentials (amp 0.5 mV, CV 47 m/s and DL 5.1 ms); thermoregulatory sweat test not performed.[academic.oup.com] […] peripheral adrenergic impairment (decreased/absent late phase 2 of Valsalva); RUL right upper limb; SSR normal unless otherwise stated.[academic.oup.com]

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