Nerve conduction and EMG data
September 1997 | September 1998 | |||||
---|---|---|---|---|---|---|
Median nerve: | ||||||
Distal motor latency | 5.0 ms(left) | 5.1 ms (right) | ||||
Motor amplitude, wrist | 6.5 mV | 11.3 | ||||
Motor conduction velocity | 51 m/s | 44 m/s | ||||
F wave latency | 31.4 ms | |||||
SNAP | Absent (digits 2,3,4) | |||||
Ulnar nerve: | ||||||
Distal motor latency | 3.7 ms(left) | |||||
Motor amplitude, wrist | 1.5 mV | |||||
Motor conduction velocity | 46 m/s | |||||
F wave latency | 30.9 ms | |||||
SNAP | Absent | |||||
Radial nerve, right: | ||||||
SNAP amplitude | 7.6 μV | |||||
Sensory conduction velocity | 35 m/s | |||||
Peroneal nerve: | ||||||
Distal motor latency | 4.0 ms (left) | 3.4 ms (right) | ||||
Motor amplitude, ankle | 3.0 mV | 684 μV | ||||
Motor conduction velocity | 33 m/s | 35 m/s | ||||
Tibial nerve: | ||||||
Distal motor latency | 4.9 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 latency | — | 5.9 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 lateralis | 0 | Poly | ↓ | |||
Tibialis anterior | 1+ | Poly | ↓ | |||
Gastrocnemius, medial head | 0 | Poly,↑amp | ↓ | |||
First dorsal interossei | 0 | Poly | ↓ | |||
Deltoid | 0 | Normal | Full | |||
Cervical paraspinals | 0 | |||||
Lumbar paraspinals | 4+ | |||||
Right | ||||||
Intercostals | 3+ 0 | |||||
Diaphragm | 0 | Poly↑dur | ↓ | |||
Tibialis anterior | 0 | Poly↑dur, amp | ↓ | |||
Gastrocnemius medial head | 1+ (CRDS) | Poly↑dur, amp | ↓ | |||
Vastus medialis | 0 | Poly↑amp | Full | |||
Deltoid | 0 | Normal | Full | |||
Triceps | 0 | Normal | Full | |||
Biceps | 0 | Normal | Full | |||
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.