Table 2.

Nerve Conduction Study 3-21-17

		Spontaneous act			Voluntary act
Muscle (innervation)	Interpretation	Fib	PSW	Fasc	Amp	Dur	Poly	Recruit
Right FDI (uln ramus prof c8 T1)	S1 inact Neur	0/10	0/10	0	Normal	+	Normal	Late
Right EDC (radial C7 c8)	S1 inact Neur	0/10	0/10	0	Normal	+	Normal	Late
Right triceps (radial c6 C7 c8)	S1 inact Neur	0/10	0/10	0	+	+	Normal	Late
Right biceps (musculocutaneous C5 c6)	Normal	0/10	0/10	0	Normal	Normal	Normal	Normal
Right deltoid (ant) (axillary C5 c6)	Mod subac Neur	0/10	0/10	1+	++	++	Normal	Late
Left medial gastroc (tibial S1 s2)	Mod subac Neur	3/10	3/10	1+	++	++	Normal	Late
Right medial gastroc (tibial S1 s2)	Mod subac Neur	3/10	3/10	1+	++	++	Normal	Late
Left AT (deep peroneal l4 L5)	Mod subac Neur	3/10	3/10	1+	++	++	Normal	Late
Right AT (deep peroneal l4 L5)	Mod subac Neur	3/10	3/10	0	++	+	Normal	Late
Left vastus lateralis (femoral L2 L3 L4)	Mod subac Neur	0/10	0/10	0	++	+	Normal	Late
Right vastus lateralis (femoral L2 L3 L4)	Mod subac Neur	0/10	0/10	0	+	+	Normal	Normal

Findings: Reduced bilateral peroneal and tibial compound muscle action potentials. The remainder of the nerve conduction study is normal. Coincidental mild right wrist nerve lesion (carpal tunnel syndrome) with delayed median sensory potentials. Electromyography (EMG) sampling shows diffuse denervation changes exhibiting with active and chronic features in both lower limbs and right upper limb. These features would be consistent with anterior horn-cell disease. There have only been minor changes, compared to the EMG performed in 2015 with the denervation changes having more chronic features.

Fib, fibulations; PSW, positive sharp wave; Fas, fasiculation; Amp, amplitude; Dur, duration; poly, polygraphy; FDI, first dorsal interosseus; EDC, extensor digitorium communis; ant, anterior; gastroc, gastrocnemius; AT, anterior tibialis; inact, inactive; Neur, neuropathy; mod, moderate; sub, subacute.