Sakakibara H, Hirata M, Hashiguchi T, Toibana N, Koshiyama H, Zhu S K, Kondo T, Miyao M, Yamada S
Department of Public Health, Nagoya University School of Medicine, Japan.
Am J Ind Med. 1996 Aug;30(2):219-24. doi: 10.1002/(SICI)1097-0274(199608)30:2<219::AID-AJIM14>3.0.CO;2-#.
To evaluate peripheral neuropathy in patients with vibration syndrome, an examination was conducted of sensory nerve conduction velocity (SCV) in the digital segment of the median nerve in the middle finger and vibration perception threshold (VPT) at 125 Hz on the same middle fingertip. In addition, possible correlations were investigated between the two measurements. SCVs in the digital segment were measured by stimulating at the wrist electrically and recording from two pairs of electrodes in the finger. Fractionated SCVs were also measured in the palm-to-finger, wrist-to-palm, and elbow-to-wrist segments. The subjects were 52 patients with vibration syndrome and 40 healthy controls of similar age. SCVs in the digital segment and the wrist-to-palm segment were significantly slower in the patients than in the controls, and VPTs were higher in the patients. The strongest correlation of VPTs with SCVs among nerve segments measured was shown in the digital segment. With an increase in VPTs, SCVs in the digital segment tended to be slower, and slowed digital SCVs were encountered more frequently: 13% in VPTs below 5.0 dB and 56% in VPTs above 17.5 dB. Slowed digital SCVs were found in 43% of the patients and increased VPTs were encountered in 92%.
为评估振动综合征患者的周围神经病变，对中指正中神经指节段的感觉神经传导速度（SCV）以及同一中指指尖125Hz的振动觉阈值（VPT）进行了检测。此外，还研究了这两项测量之间可能存在的相关性。通过在腕部进行电刺激并从手指的两对电极记录来测量指节段的SCV。还测量了掌指、腕掌和肘腕节段的分段SCV。受试者为52例振动综合征患者和40名年龄相仿的健康对照者。患者指节段和腕掌节段的SCV明显慢于对照组，且患者的VPT更高。在所测量的神经节段中，VPT与SCV之间的最强相关性出现在指节段。随着VPT升高，指节段的SCV往往变慢，且指节段SCV减慢的情况更常见：VPT低于5.0dB时为13%，VPT高于17.5dB时为56%。43%的患者存在指节段SCV减慢，92%的患者VPT升高。
