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HUMAN PHENOTYPE - ANNOTATIONS

The Human Phenotype Ontology (HPO) is downloaded weekly from http://compbio.charite.de/hudson/job/hpo/lastStableBuild/artifact/ontology/release/hp.obo. The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at http://www.human-phenotype-ontology.org/.

Term:EMG: decremental response of compound muscle action potential to repetitive nerve stimulation
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Accession:HP:0003403 term browser browse the term
Definition:A compound muscle action potential (CMAP) is a type of electromyography (EMG). CMAP refers to a group of almost simultaneous action potentials from several muscle fibers in the same area evoked by stimulation of the supplying motor nerve and are recorded as one multipeaked summated action potential. This abnormality refers to a greater than normal decrease in the amplitude during the course of the investigation.
Comment:The result of this test is abnormal if progressively fewer muscle fibers respond to nerve stimulation during a train of stimuli, thereby yielding a decrementing pattern in the CMAP.
Synonyms:exact_synonym: EMG: decremental response of CMAP to repetitive nerve stimulation
 related_synonym: EMG: decrement at repetitive stimulation
 alt_id: HP:0003430;   HP:0003478
 xref: UMLS:C4020841;   UMLS:C4021728



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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the musculoskeletal system 0
        Abnormality of the musculature 0
          Abnormal muscle physiology 0
            EMG abnormality 0
              EMG: impaired neuromuscular transmission 0
                EMG: decremental response of compound muscle action potential to repetitive nerve stimulation 0
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