OBJECTIVE: @entity923 ( @entity923 ) is commonly bilateral, but symptoms and EMG/NCS abnormalities may be seen unilaterally. This study was designed to determine whether there are any subclinical @entity616 on the "uninvolved" side. DESIGN: Statistical analysis of electrodiagnostic data. SETTING: Outpatient academic electrodiagnostic laboratory. @entity1 : Twenty-two successive @entity1 referred for bilateral upper extremity NCS/EMG with no symptoms or physical signs of @entity923 and totally normal results, and ten successive @entity1 with an EMG/NCS diagnosis of @entity923 on one side, and completely normal EMG/NCS on the contralateral side. RESULTS: The median motor and sensory latencies at the wrist were significantly longer in the contralateral "uninvolved" limb than normals (median motor latency 3.75 vs. 3.30 msecs, p = 0.0005, median sensory latency 3.40 vs 3.00 msecs, p = 0.0002). Median sensory amplitude was smaller in the contralateral limb (30.5 uV vs. 41.5 uV, p = 0.0062). The (median-radial) D1 sensory latency difference was greater in the contralateral wrist (0.2 vs. 0.0 msecs, p = 0.0217). The (median-ulnar) sensory latency difference was not significantly increased (0.15 vs. 0.10 msecs, p = 0.2020). CONCLUSIONS: The contralateral limbs of @entity1 with unilateral @entity923 show significant differences from normals in 4 out of 5 nerve conduction parameters. There is evidence of frequent subclinical @entity2850 in this group.

XXXX at the wrist: is it ever unilateral?

@entity923 :: ('MESH:D002349', 'Disease') :: ['Carpal Tunnel Syndrome', 'CTS'] @entity1 :: ('9606', 'Species') :: ['patients', 'PATIENTS'] @entity616 :: ('MESH:D006327', 'Disease') :: ['nerve conduction abnormalities'] @entity2850 :: ('MESH:D009408', 'Disease') :: ['median nerve compression']
@entity2850 :: (MESH:D009408,Disease) :: ['Median nerve compression']
