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Table 2 Nerve conduction study results for EMG

From: Pontine stroke in a patient with Chronic Progressive External Ophthalmoplegia (CPEO): a case report

Nerve (unit)

Normal value

Patient value

Right Median

 Motor distal latency (ms)

 < 4.1

3.33

 CMAP amplitude- wrist (mV)

 > 5.0

10.8

 CMAP amplitude- elbow (mV)

-

10.4

 Motor conduction velocity (m/s)

 > 48

57.4

 F wave latency (ms)

 < 30

27.45

Right Peroneal

 Motor distal latency (ms)

 < 6.0

4.90

 CMAP amplitude- ankle (mV)

 > 3.0

7.1

 CMAP amplitude- fibular head (mV)

-

5.6

 Motor conduction velocity (m/s)

 > 38

49.3

 F wave latency (ms)

 < 57

49.53

Right Radial

 SNAP amplitude (μV)

 > 15.0

17.3

 SNAP conduction velocity (m/s)

 > 50

51.5

Right sural

 SNAP amplitude (μV)

 > 5.0

NR

 SNAP conduction velocity (m/s)

 > 38

-

  1. CMAP compound motor action potential, SNAP sensory nerve action potential, ms millisecond, mV millivolt, μV microvolt, m/s meter per second, NR no response