Electromyography in the evaluation of muscle diseases.
This review deals with electromyographic criteria that distinguish between weakness and wasting due to disease of the muscle fiber or secondary to denervation. The criteria reflect scattered loss or block of muscle fibers. The diagnostic yield of the electromyographic criteria is 87 per cent, slightly higher than the yield of histopathology and histochemistry.
D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004576:Electromyography; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged; D009046:Motor Neurons / Q000502:physiology; D009119:Muscle Contraction; D009132:Muscles / Q000294:innervation / Q000502:physiology; D009135:Muscular Diseases / Q000175:diagnosis*; D009136:Muscular Dystrophies / Q000175:diagnosis; D009220:Myositis / Q000175:diagnosis; D009224:Myotonia Congenita / Q000175:diagnosis; D009223:Myotonic Dystrophy / Q000175:diagnosis; D011999:Recruitment, Neurophysiological; D013696:Temperature