Study of fusion tests for diagnosing hand-arm vibration syndrome -finger blood pressures during cold exposure and somatosensory evoked responses to electrical stimulation of skin-

为了诊断手-臂振动综合征，作者调查了一只手在冷水中浸泡时的手指血压和对皮肤电刺激的体感诱发反应。对4例有雷诺现象的振动综合征患者和无雷诺现象的振动综合征患者进行了手指血压测量和日本常规使用的循环功能测试。五名健康受试者被测量了对皮肤和正中神经电刺激的体感反应。手指血压与皮温、指甲按压试验和体积描记仪的结果有很好的相关性。浸泡试验中有雷诺现象者与无雷诺现象者手指血压差异较大，对皮肤电刺激的体感诱发反应与针刺机械刺激的体感诱发反应非常相似，而对正中神经的电刺激不同。因此，我们得出的结论是，我们的新方法对于检测振动综合征患者手部机械感受器的功能障碍是有用和方便的。

For the purpose of diagnosing hand-arm vibration syndrome, authors investigated finger blood pressures during immersion of one hand in cold water and somatosensory evoked responses to electrical stimulation of the skin.Four vibration syndrome patients with Raynaud's phenomenon and for vibration syndrome patients without Raynaud's phenomenon were subjected to measurement of finger blood pressure as well as circulatory function tests used conventionally in Japan. Five healthy subjects were measured somatosensory evoed responses to electrical stimulation of the skin and of the median nerve.Finger blood pressure correlated well with findings of skin temperature, the nail press test and plethysmograph. The difference of finger blood pressures during immersion test between the patients with Raynaud's phenomenon and the patients without it was larger than those of the conventional tests.Somatosensory evoked responses to electrical stimulation of the skin were very similar to those to mechanical stimulation by pin-prick but not to electrical stimulation of the median nerve. Therefore, we concluded that our new method is useful and convenient for detecting disorder of mechanoreceptors of hands in vibration syndrome patients.