重症肌无力中的镫骨肌反射衰减

Stapedius reflex decay in myasthenia gravis.

作者信息

Warren W R, Gutmann L, Cody R C, Flowers P, Segal A T

出版信息

Arch Neurol. 1977 Aug;34(8):496-7. doi: 10.1001/archneur.1977.00500200056011.

DOI:10.1001/archneur.1977.00500200056011

Abstract

Stapedius reflex decay, in response to a one-minute sound stimulus of 500 Hz occurred in six patients with myasthenia gravis. This decay is analagous to the decremental response of muscle action potentials to rapid nerve stimulation. Edrophonium chloride decreases the degree of decay. This represents a useful test in the diagnosis of myasthenia gravis.

摘要

在6例重症肌无力患者中，对500Hz的1分钟声音刺激出现镫骨肌反射衰减。这种衰减类似于肌肉动作电位对快速神经刺激的递减反应。氯化依酚氯铵可降低衰减程度。这是诊断重症肌无力的一项有用测试。