경증의 수근관증후군에서 여러 전기진단학적 지표들의 유용성 (The Usefulness of Various Electrodiagnostic Parameters in Mild Carpal Tunnel Syndrome)

서지정보

· 발행기관 : 대한근전도전기진단의학회
· 수록지 정보 : 대한근전도 전기진단의학회지 / 10권 / 2호 / 135 ~ 143페이지
· 저자명 : 박동식, 남희승, 이상억, 김동현, 이정기, 정현오

초록

Objectives: The purpose of this study is to evaluate the sensitivities and specificities of various electrodiagnostic
parameters and to investigate the useful methods to increase the sensitivity in the electrodiagnosis
of mild carpal tunnel syndrome (CTS).
Methods: The 178 hands of 142 patients with mild CTS based on the Steven's electrodiagnostic criteria
were studied. We performed seven electrodiagnostic tests: distoproximal ratio in the second or third finger
(M2DP, M3DP); median-radial latency difference to the thumb (MRLD); median-ulnar latency difference
to the ring finger (MULD); second lumbrical-interosseous motor latency difference (LILD); median
sensory-ulnar motor latency difference to the second or third finger (M2SUM, M3SUM). The sensitivity
and specificity of each test were calculated.
Results: The sensitivities of electrodiagnostic parameters were noted in the M2DP(98.9%),
M3DP(98.9%), MRLD(87.6%), MULD(86.5%), M3SUM(74.2%), M2SUM(55.6%), LILD(54.5%).
Among electrodiagnostic parameters, M2DP(49.0%) and M3DP(68.0%) revealed relatively low specificities
than others. Percentage of mild CTS hands which was abnormal at two differently combined electrodiagnostic
test: in M2DP and M3DP(98.3%), M3DP and MULD(86.0%), M3DP and MRLD(81.5%),
MRLD and MULD(79.2%), MULD and M3SUM(70.2%); in M3DP or LILD(100%), M3DP or
M2SUM(100%), M3DP or MRLD(99.4%), M3DP or M2DP(99.4%), M3DP or MULD(99.4%), M3DP
or M3SUM(99.4%).
Conclusion: The most sensitive parameter was distoproximal ratio (M2DP, M3DP), as useful method in
the electrodiagnosis of mild CTS but it may cause greater reporting of false positive. Additional parameters
including MULD, MRLD, LILD, M2SUM, M3SUM may be of value in the diagnosis of mild CTS
patients.

영어초록

Objectives: The purpose of this study is to evaluate the sensitivities and specificities of various electrodiagnostic
parameters and to investigate the useful methods to increase the sensitivity in the electrodiagnosis
of mild carpal tunnel syndrome (CTS).
Methods: The 178 hands of 142 patients with mild CTS based on the Steven's electrodiagnostic criteria
were studied. We performed seven electrodiagnostic tests: distoproximal ratio in the second or third finger
(M2DP, M3DP); median-radial latency difference to the thumb (MRLD); median-ulnar latency difference
to the ring finger (MULD); second lumbrical-interosseous motor latency difference (LILD); median
sensory-ulnar motor latency difference to the second or third finger (M2SUM, M3SUM). The sensitivity
and specificity of each test were calculated.
Results: The sensitivities of electrodiagnostic parameters were noted in the M2DP(98.9%),
M3DP(98.9%), MRLD(87.6%), MULD(86.5%), M3SUM(74.2%), M2SUM(55.6%), LILD(54.5%).
Among electrodiagnostic parameters, M2DP(49.0%) and M3DP(68.0%) revealed relatively low specificities
than others. Percentage of mild CTS hands which was abnormal at two differently combined electrodiagnostic
test: in M2DP and M3DP(98.3%), M3DP and MULD(86.0%), M3DP and MRLD(81.5%),
MRLD and MULD(79.2%), MULD and M3SUM(70.2%); in M3DP or LILD(100%), M3DP or
M2SUM(100%), M3DP or MRLD(99.4%), M3DP or M2DP(99.4%), M3DP or MULD(99.4%), M3DP
or M3SUM(99.4%).
Conclusion: The most sensitive parameter was distoproximal ratio (M2DP, M3DP), as useful method in
the electrodiagnosis of mild CTS but it may cause greater reporting of false positive. Additional parameters
including MULD, MRLD, LILD, M2SUM, M3SUM may be of value in the diagnosis of mild CTS
patients.

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