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Table 1 Electrodiagnostic Studies

From: A patient with amyotrophic lateral sclerosis and atypical clinical and electrodiagnostic features: a case report

  

Initial

Repeat

  

Right

Left

Right

Study

Nerve

DML (ms)

AMP (mV)

CV (m/sec)

DML (ms)

AMP (mV)

CV (m/sec)

DML (ms)

AMP (mV)

CV (m/sec)

Motor

Tibial (AH)

6.6

0.4

26

7.4

1

37

NR

NR

NR

 

Peroneal (EDB)

7.9

0.1

29

7.9

12

37

NR

NR

NR

 

Median (APB)

4.4

7

51

   

6.4

0.7

29.6

 

Ulnar (ADM)

3.4

8

56

   

3.5

2.4

47

Sensory

Sural

 

21.2

31

      
 

Median(dig 2)

 

13

53

    

3.6

44

 

Median(dig 3)

 

9.4

49

      
 

Ulnar

 

8.7

46

    

3.0

42

  

Mean F-wave latency (ms)

   

Mean F-wave latency (ms)

F-Wave

Tibial(soleus)

NR

      
 

Median (APB)

33 (predicted 28.9)

   

41.4 (predicted 28.9)

  1. Normal values: DML - peroneal ≤ 6.1 ms; tibial ≤ 6.4 ms; median ≤ 4.5 ms; ulnar ≤ 3.4 ms. MNCV (amplitudes) - tibial ≥ 39 m/sec (≥ 4 mV); peroneal ≥ 39 m/sec (≥ 3 mV); median ≥ 49 m/sec (≥ 4 mV); ulnar ≥ 49 m/sec (≥ 4 mV). SNAP conduction velocities (amplitudes) - sural ≥ 39 m/sec (≥ 6 μ); median ≥ 49 m/sec (10 μV); ulnar ≥ 49 m/sec (≥ 3 μV). Abnormal values in bold.
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Journal of Medical Case Reports

ISSN: 1752-1947