NERVE-CONDUCTION VELOCITY-MEASUREMENTS - IMPROVED ACCURACY USING SUPERIMPOSED RESPONSE WAVES

  • 1 January 1976
    • journal article
    • research article
    • Vol. 57  (10) , 451-457
Abstract
A new procedure of serial motor nerve conduction velocity (NCV) measurements with the use of superimposed response waves technique (or double stimulus technique) was performed on 29 normal subjects. Six peripheral nerves were tested once a week for 4-6 wk. A total of 760 NCV measurements were thus obtained to try to assess the magnitude of error in serial NCV testings. With the double stimulus technique employed, a significant reduction in variations of serial NCV measurements was found. The overall standard deviation of 4-6 consecutive NCV measurements in the 34 subjects was 1.3 m/s with a coefficient of variation of 2.4%. These findings obtained with the double stimulus technique were approximately 3 times more accurate than results obtained by investigators who studied nerve conduction velocity measurement variation with single stimulus standard NCV testing techniques.

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