Mononeuropathy multiplex associated with systemic vasculitis: A case report

Table 1 Result of sensory nerve conduction study

	Initial (1 d after onset)			Follow-up (4 mo after onset)
Nerve	Stimulation/recording site	Latency (ms)	Amplitude (µV)	Stimulation/recording site	Latency (ms)	Amplitude (µV)
Rt. median	Digit II/III/Wrist	Not done		Wrist/Digit II	2.45	27.5
Lt. median		2.5	12.1		NR	NR
Rt. ulnar	Digit IV/V/Wrist	Not done		Wrist/Digit V	2.66	42.9
Lt. ulnar		2.7	15.1		2.40	9.9
Rt. superficial peroneal		Not done		Lateral leg/Foot	NR	NR
Lt. superficial peroneal						NR
Rt. sural	Calf/Lat. Malleolus	2.8	1.6	Calf/Lat. Malleolus	2.03	5.6
Lt. sural		3.0	5.5		1.67	3.4

NR: No response.

Table 2 Result of motor nerve conduction study

	Initial (1 d after onset)				Follow-up (4 mo after onset)
Nerve (recorded muscle)	Stimulation site	Latency (ms)	Amplitude (mV)	Conduction velocity (m/s)	Latency (ms)	Amplitude (mV)	Conduction velocity (m/s)
Rt. median(APB)	Wrist	Not done			3.23	12.1
	Elbow				6.35	7.5	57.6
Lt. median (APB)	Wrist	3.0	0.9		3.23	2.7
	Elbow	NR	NR		9.74	0.6	27.6
Rt. Ulnar (ADM)	Wrist	Not done			2.45	10.7
	B. Elbow				5.57	9.1	67.2
Lt. ulnar (ADM)	Wrist	2.5	7.7		2.81	5.4
	B. Elbow	6.2	7.3	57.0	6.30	5.2	60.2
Rt. common peroneal (EDB)	Ankle	4.3	0.5		NR	NR
	Fibular head	9.4	0.4	53.0	NR	NR
Lt. common peroneal (EDB)	Ankle	3.2	3.8		3.80	2.6
	Fibular head	8.7	3.5	48.0	9.97	2.0	50.1
Rt. common peroneal (TA)	Fibular head	3.8	1.1		4.64	0.1
	Post. knee	7.2	1.1	28.0	5.73	0.1	36.6
Lt. common peroneal (TA)	Fibular head	2.8	9.6		2.14	4.2
	Post. knee	4.4	9.6	63.0	2.71	4.0	69.8
Rt. tibial (AH)	Ankle	NR	NR		NR	NR
	Post. knee	NR	NR		NR	NR
Lt. tibial (AH)	Ankle	NR	NR		NR	NR
	Post. knee	NR	NR		NR	NR

APB: Abductor pollicis brevis; ADM: Abductor digiti minimi; EDB: Extensor digitorum brevis; TA: Tibialis anterior; AH: Abductor hallucis; NR: No response.

Table 3 Result of H reflex, and F wave

H reflex	Initial		Follow up		F wave	Initial	Follow up
Nerve	Latency (ms)	Amplitude (µV)	Latency (ms)	Amplitude (µV)	Nerve	Latency (ms)	Latency (ms)
Rt. tibial	NR	NR	NR	NR	Rt. median	Not done	24.43
					Lt. median	NR	26.35
					Rt. ulnar	Not done	23.02
Lt. tibial	NR	NR	NR	NR	Lt. ulnar	NR	27.24
					Rt. tibial	NR	NR
					Lt. tibial	NR	NR

NR: No response.

Table 4 Result of needle electromyography

Needle EMG	Follow-up (4 mo after onset)
Muscle	Spontaneous			MUAP			Interference
	IA	Fib	PSW	Amp	Dur	PPP	Pattern
Lt. first dorsal interosseous	Normal	None	2+	Normal	Normal	Normal	Reduced
Lt. extensor carpi radialis longus	Normal	None	None	Normal	Normal	Normal	Complete
Lt. biceps	Normal	None	None	Normal	Normal	Normal	Complete
Rt. tibialis anterior	Normal	3+	3+	Normal	Long	Increased	Single
Rt. gastrocnemius (medial)	Normal	3+	3+				None
Rt. abductor hallucis	Normal	1+	1+				None
Lt. tibialis anterior	Normal	None	None	Normal	Normal	Normal	Complete
Lt. gastrocnemius (medial)	Increased	None	None	Normal	Normal	Normal	Complete

IA: Insertional activity; Fib: Fibrillation; PSW: Positive sharp waves; MUAP: Motor unit action potential; Amp: Amplitude; Dur: Duration; PPP: Polyphasicity.