Journal of the Medical Association of Thailand = Chotmaihet thangphaet · 2014
Comparison of sensitivities between median-thumb sensory distal latency and conventional nerve conduction studies in electrodiagnosis of carpal tunnel syndrome.
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Gerawarapong Chinapat
Аннотация
OBJECTIVE: Compare the sensitivities ofmedian-thumb sensory distal latency (M-T sensory DL) with other standard nerve conduction studies (NCSs) in patients with carpal tunnel syndrome (CTS).
MATERIAL AND METHOD: Eighty-eight participants'hands, obtained retrospectively between June 2012 and August 2013, were included and divided into two groups, 48 CTS hands and 40 control hands, respectively All clinical data, demographic characteristics, and electrodiagnostic (EDX) findings of each test were compared and analyzed
RESULTS: M-Tsensory DL had the highest sensitivity. It was 81.3% equal to wrist-palm sensory nerve conduction velocity (W-P sensory NCV) and median-radial sensory distal latency diference (M-RSLD). Specificity of the M-Tsensory DL was 95.0%, less than wrist-palm motor nerve conduction velocity (W-P motor NCV) (100.0%), wrist sensory DL (100.0%), and median-thumb sensory nerve conduction velocity (M-T sensory NCV) (100.0%), respectively. Furthermore, using a combination of the EDX tests, both M-T sensory and median sensory NCSs performed equally with higher diagnostic predictive values than the median motor NCS.
CONCLUSION: The M-Tsensory DL is a valuable NCSfor the diagnosis of CTS. Overall, it performs with the highest sensitivity and accuracy when used in a single EDX test or combined with M-Tsensory NCV
MATERIAL AND METHOD: Eighty-eight participants'hands, obtained retrospectively between June 2012 and August 2013, were included and divided into two groups, 48 CTS hands and 40 control hands, respectively All clinical data, demographic characteristics, and electrodiagnostic (EDX) findings of each test were compared and analyzed
RESULTS: M-Tsensory DL had the highest sensitivity. It was 81.3% equal to wrist-palm sensory nerve conduction velocity (W-P sensory NCV) and median-radial sensory distal latency diference (M-RSLD). Specificity of the M-Tsensory DL was 95.0%, less than wrist-palm motor nerve conduction velocity (W-P motor NCV) (100.0%), wrist sensory DL (100.0%), and median-thumb sensory nerve conduction velocity (M-T sensory NCV) (100.0%), respectively. Furthermore, using a combination of the EDX tests, both M-T sensory and median sensory NCSs performed equally with higher diagnostic predictive values than the median motor NCS.
CONCLUSION: The M-Tsensory DL is a valuable NCSfor the diagnosis of CTS. Overall, it performs with the highest sensitivity and accuracy when used in a single EDX test or combined with M-Tsensory NCV