Skip to main content

Table 1 Electrophysiologic studies of the proband reported in this study

From: Coexistence of Charcot-Marie-Tooth 1A and nondystrophic myotonia due to PMP22 duplication and SCN4A pathogenic variants: a case report

 

Proband

Normal range

Median nerves

 DML (ms)

15.4

< 4.4

 MCV (m/s)

15.5

> 49

 Proximal CMAP (mV)

0.43

> 4

Ulnar nerves

 DML (ms)

12

< 3.3

 MCV (m/s)

17.0

> 49

 Proximal CMAP (mV)

0.21

> 6

 SCV (m/s)

25.3

> 47

 SNAP (μv)

> 3

 DML (ms)

4.75

 

Peroneal nerves

 DML (ms)

8.16

< 5.8

 MCV (m/s)

16.8

> 41

 Proximal CMAP (mV)

0.11

> 4

Tibial nerves

 DML (ms)

12.2

< 5.8

 MCV (m/s)

13.5

> 41

 Proximal CMAP (mV)

0.074

> 4

  1. DML distal motor latency, MCV motor conduction velocity, CMAP compound muscle action potential, SCV sensory conduction velocity, SNAP sensory nerve action potential