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J Neurol Neurosurg Psychiatry 75:301-304 doi:10.1136/jnnp.2003.022277
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Tangier disease—a diagnostic challenge in countries endemic for leprosy

Table 1

Nerve conduction values

Nerve Parameters Control Right side Left side
D, Distal; P, proximal; DL, distal latency; CMAP, compound muscle action potential; CV, conduction velocity; F lat, F latency; SNAP, sensory nerve action potential
*could not be tested due to large wound
Median DL (ms) 3.1 (0.6) 4.8 *
CMAP (mV) 7.0 (3.0) D, 4.41; P, 2.4 *
CV (m/s) 56.8 (5.1) 23.5 *
F lat (ms) 26.0 (1.9) 40.0 *
Ulnar DL (ms) 2.0 (0.5) 8.2 *
CMAP (mV) 10.9 (2.6) D, 1.23; P, 0.75 *
CV (m/s) 59.9 (4.8) 18.3 *
F lat (ms) 25.7 (1.9) no F *
CP DL (ms) 5.3 (0.6) 5.4 6.2
CMAP (mV) 5.1 (2.3) D, 4.2; P, 4.1 D, 3.0; P, 2.8
CV (m/s) 51.2 (3.7) 41.4 36.2
F lat (ms) 52.0 (4.0) 35.6 36.4
Median SNAP (μV) 21.4 (4.2) no SNAP *
CV (m/s) 59.8 (4.5)
Ulnar SNAP (μV) 22.5 (6.7) no SNAP *
CV (m/s) 56.2 (4.1)
Sural SNAP (μV) 28.5 (3.6) 4.3 no SNAP
CV (m/s) 48.8 (3.8) 35.0

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