A Man with Episodes of Shoulder Pain and a Weak Arm

 

Amplitude (μV)

Onset latency (ms)

Peak latency (ms)

Conduction velocity m/s

Right Median (F3-wrist)

3.0

3.9

4.4

42.5

Right Ulnar (F5-wrist)

5

2.8

3.3

46.5

Right Radial (forearm-wrist)

15

1.9

2.5

51.5

Left Median (F3-wrist)

Absent
   
Left Ulnar (F5-wrist)

4

2.7

3.4

44.5

Right Sural (calf-ankle)

Absent
   
Right Superf. peroneal (calf-ankle)

5.0

2.8

3.6

38.5

Left Sural (calf-ankle)

6.0

3.8
 
37.5




Table 26.2
Motor nerve conduction studies


















































 
Right
Left

Median (SE on APB)

DML
4.3 ms
13.3 ms

CV (wrist-elbow)
46 m/s
–

CV (elbow-axilla)
48 m/s
–

CMAP (wrist)
5.4 mV
0.1

CMAP (elbow)
4.7 mV
–

CMAP (axilla)
4.8 mV
–

Minimal F-wave latency (wrist)
32.5 ms
–

Ulnar (SE on ADM)

DML
2.7 ms
2.9 ms

CV (wrist-below elbow)
51 m/s

Only gold members can continue reading. Log In or Register to continue

Related posts:

Default ThumbnailA Young Man with Blurred Vision and Foot Drop Default ThumbnailWeakness in an Indian Man Leg Swelling and Painful Feet in a Business Man Default ThumbnailA Multisystem Muscle Disorder Needs Monitoring Default ThumbnailPraying for an Answer Can Be Helpful Typical Phenotype, MRI and Histology

Stay updated, free articles. Join our Telegram channel
Tags:
Aug 15, 2017 | Posted by in NEUROLOGY | Comments Off on A Man with Episodes of Shoulder Pain and a Weak Arm

Full access? Get Clinical Tree

 Get Clinical Tree app for offline access