Motor Nerve Conduction Studies in Premature Infants, Infants, and Children

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  The motor nerve conduction velocity (MNCV) values of newborns are about half those of adults.
  
  
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  By age 3 years, the MNCV values are in the lower adult range.
  
  
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  By age 5 years, the MNCV values are essentially the same as those for adults.
  
  
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  Premature infant values (Cerra and Johnson)¹
  
  
  
  
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    Premature ulnar MNCV (N = 19), 20.2 ± 2.6 meters per second (m per s); range, 16.5 to 24.6 m per s.
    
    
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    Premature peroneal MNCV (N

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