Table 3.

Nerve conduction study reveals normal onset latency (which is a function of neuronal myelination) with significantly reduced amplitude in the lower extremity nerves suggesting axonal degeneration or death in these nerves, a finding suggestive of axonal form of Guillain Barre syndrome. Please note that these changes were not seen in the upper extremity nerves.

Motor nerves
NR	Onset (ms)	Norm onset (ms)	O-P amp (mV)	Norm amp (mV)	Neg dur (ms)	Segment name	Delta-O (ms)	Dist (cm)	Vel (m/s)	Norm vel (m/s)
Right peroneal (EDB)
Ankle	4.92	<5.5	0.08	>2.5	5.70	B fib-ankle	6.25	29	46.40	>40.0
B Fib	11.17		0.12		5.55	Poplt-B fib	1.09	6	55.05	>40.0
Poplt	12.27		0.38		5.39
Right tibial (AHB)
Ankle NR		<6.0		>3.0		Knee-ankle	−2.11			>41.0
Knee	14.30		0.05		3.91
Left peroneal (EDB)
Ankle NR		<5.5		>2.5
Left tibial (AHB)
Ankle	5.70	<6.0	0.83	>3.0	3.13	Knee-ankle	9.06	42	46.36	>41.0
Knee	14.77		0.45		4.92
Left median (abd poll brev)
Wrist	3.05	<4.2	11.28	>5.0	5.31	Elbow-wrist	3.52	19	53.98	>50.0
Elbow	6.56		10.88		5.63
Left ulnar (abd dig min)
Wrist	2.89	<4.2	11.90	>3.0	6.09	B elbow-wrist	3.13	21	67.09	>53.0
B elbow	6.02		12.79		6.25	A elbow- B elbow	1.17	8	68.38	>53.0
A elbow	7.19		13.02		6.02	Axilla- A elbow	1.41	10	70.92
Axilla	8.59		13.22		6.09