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You are here : 3-RX.com > Medical Encyclopedia > Tests and Exams > Electromyography: Results and Values


Alternate Names : EMG

Electromyography | Preparation & Expectations | Results and Values

What do the test results mean?

Disorders or conditions that cause abnormal results include:

  • polymyositis, or inflammation of the skeletal muscle tissue
  • muscular dystrophy, a group of inherited muscle disorders that cause muscle weakness
  • myopathy, which means any disease or abnormal condition of muscles
  • traumatic injury
  • hyperadrenalism, or increased secretion from the adrenal gland
  • hypothyroidism, or decreased secretion from the thyroid gland
  • carpal tunnel syndrome, which is pain or numbness that affects the hand
  • sarcoidosis, a disease in which abnormal collections of inflammatory cells form in many organs of the body
  • Guillain-Barre syndrome, an autoimmune disease in which the myelin sheathes of nerves are destroyed, causing a loss of motor function
  • myasthenia gravis, an autoimmune disease that causes muscle weakness
  • spinal cord injury or disease
  • multiple sclerosis, an autoimmune disorder of the central nervous system
  • diabetic neuropathy, which causes a painful tingling or burning sensation in the hands and feet
  • amyotrophic lateral sclerosis, a progressive disease marked by muscle weakness

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    Electromyography: Preparation & Expectations


    Author: Gail Hendrickson, RN, BS
    Reviewer: Eileen McLaughlin, RN, BSN
    Date Reviewed: 06/07/01

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