Nerve conduction and EMG data

September 1997September 1998
Median nerve:
 Distal motor latency 5.0 ms(left) 5.1 ms (right)
 Motor amplitude, wrist6.5 mV11.3
 Motor conduction velocity51 m/s 44 m/s
 F wave latency31.4 ms
 SNAP Absent (digits 2,3,4)
Ulnar nerve:
 Distal motor latency 3.7 ms(left)
 Motor amplitude, wrist1.5 mV
 Motor conduction velocity46 m/s
 F wave latency30.9 ms
 SNAP Absent
Radial nerve, right:
 SNAP amplitude 7.6 μV
 Sensory conduction velocity 35 m/s
Peroneal nerve:
 Distal motor latency4.0 ms (left)3.4 ms (right)
 Motor amplitude, ankle3.0 mV684 μV
 Motor conduction velocity 33 m/s 35 m/s
Tibial nerve:
 Distal motor latency4.9 ms (left)5.1 ms (right)
 Motor amplitude, ankle 2.7 mV 4.8 mV
 Motor conduction velocity 32 m/s 32 m/s
 F wave latency 65.7 ms
Sural nerve:
 SNAP Absent(left) Absent (right)
Phrenic nerve, right:
 Motor amplitude Absent Absent
Phrenic nerve, left:
 Distal motor latency5.9 ms
 Motor amplitude Absent 59 μV
Muscle:
Left fib/PSW MUP morphology Recruitment
9/97   9/98 9/97 9/98 9/97 9/98
 Vastus lateralis0 Poly
 Tibialis anterior 1+ Poly
 Gastrocnemius, medial head0 Poly,amp
 First dorsal interossei0 Poly
 Deltoid0NormalFull
 Cervical paraspinals0
 Lumbar paraspinals 4+
Right
 Intercostals 3+     0
 Diaphragm0 Polydur
 Tibialis anterior     0 Polydur, amp
 Gastrocnemius medial head     1+ (CRDS) Polydur, amp
 Vastus medialis     0 Polyamp Full
 Deltoid     0NormalFull
 Triceps     0NormalFull
 Biceps     0NormalFull
 Thoracic paraspinals     0
  • Abnormal values are bold or underlined; amp=amplitude; CRDS= complex repetitive discharges; dur=duration; poly=polyphasic; SNAP=sensory nerve action potential; MUP=motor unit potential; fib/PSW=fibrillations/positive sharp waves.