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Table 1 Nerve conduction study during the initial presentation in 2002 (1st episode) and recurrence (2nd episode) of Guillain-Barre syndrome in 2014

From: An unusual case of recurrent Guillain-Barré syndrome with normal cerebrospinal fluid protein levels: a case report

Nerve

Episode

Distal latency (ms)

Conduction velocity (m/s)

Amplitude (mV)

F wave (m/s)

Conduction block

Motor

 Median (Right/left)

1st

6.7/6.2

40/45

7.5/11

33/35

Yes

2nd

9.1/8.9

38/40

5.6/ 6

38/40

Yes

Recovery (4 months after 2nd Episode)

4.4/4.5

51

6.0

29

No

Normal Referrence Value

<4.4

>49

>4.2

<31

 

 Ulnar (Right/left)

1st

4.6/5.0

42/44

6.0/ 6.2

27/32

Yes

2nd

8.9/9.4

37/41

8.2/ 1.5

36/29

Yes

Normal Referrence Value

<3.5

>49

>5.6

<31

 

 Peroneal @ EDB (Right/left)

1st

11.5/13

38/45

2.5/ 2.4

43/49

NP

2nd

Absent

Absent

1.6/2.0

Absent

Yes

Recovery (4 months after 2nd Episode)

5.5

50

2.5

33

No

Normal Referrence Value

<5.7

>50

>2.2

  

 Tibial (Right/left)

1st

18.8/18.9

 

3.0/3.2

52/49

NP

2nd

NP

NP

NP

NP

NP

Normal Referrence Value

  

>2.8

  

Sensory

 Radial (Right/left)

1st

2.8/ 3.1

38/37

24/23

-

-

2nd

2.9/ 3.0

28/33

18/20

  

Normal Referrence Value

<2.6

>43

>20

  

 Sural (Right/left)

1st

2.5/3.0

41/40

34/28

  

2nd

2.6/2.5

46/48

25/27

-

-

Normal Referrence Value

<2.6

>52

>24

  
  1. NP not performed
  2. EDB Extensor digitorum brevis