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Table 1 Selected NCS findings

From: Neurosyphilis presenting with Guillain–Barre syndrome: a case report

Sensory Nerve Conduction

   

Nerve/Sites

Onset Latency (ms)

Peak Latency (ms)

Amplitude (uV)

Distance (mm)

Velocity (m/s)

Left Sural—Ankle

Calf

2.7

3.5

14

140

51.3

Right Sural—Ankle

Calf

2.7

3.5

12

140

51.7

Left Radial—Anatomical snuff box

Forearm

2.1

2.8

10

100

47.5

Motor Nerve Conduction

   

Nerve/Sites

Latency (ms)

Amplitude (mV)

Duration (ms)

Velocity (m/s)

Left Median—APB

Wrist

15.1 (< 4.4)

1.4 (> 4.0)

13.4

 

Elbow

20.3

1.4

11.7

41.9 (> 49)

Left Ulnar—ADM

Wrist

6.8 (< 3.6)

1.0 (> 5.0)

12

 

Below Elbow

10.6

0.9

11.7

47.2 (> 49)

Above Elbow

12.9

0.7

13.4

44.9

Left Peroneal—EDB—No Response

Left Tibial—AH

Ankle

14.9 (< 6.0)

0.1 (> 3.0)

6.5

 

Popliteal Fossa

29.5

0.1

3.6

21.9 (> 39)

F-wave

    

Nerve—Muscle

F Latency (ms)

M Latency (ms)

F-M Latency (ms)

 

Left Ulnar—ADM

NR

   

Left Median—APB

NR

NR

NR

 

Left Tibial—AH

NR

NR

NR

 
  1. APB Abductor Pollicis Brevis, ADM Abductor Digit Minimi, EDB Extensor Digitorum Brevis, AH Adductor Hallicus, NR No Response. EMG in the left tibialis anterior, vastus lateralis, and first dorsal interosseous muscles showed moderately decreased recruitment. Normal values are shown in parenthesis