Hanakawa T, Hashimoto S, Iga K, Segawa Y, Shibasaki H
Department of Neurology, Tenri Hospital, Tenri, Nara 632-0015, Japan.
J Neurol Neurosurg Psychiatry. 2000 Nov;69(5):672-4. doi: 10.1136/jnnp.69.5.672.
A patient comatose after acute anoxia developed bilaterally synchronous, periodic myoclonic jerks most prominently in the bilateral upper limbs. Although the myoclonus seemed to occur spontaneously, electrophysiological studies showed that the myoclonic jerks correlated in timing and size with arterial pulses, and was suppressed by massage over the carotid sinus. It is proposed that the present myoclonus is a variant of brainstem reflex myoclonus in which arterial pulses served as intrinsic trigger stimuli via the carotid sinus and the medullary reticular formation.
一名急性缺氧后昏迷的患者出现双侧同步、周期性肌阵挛性抽搐，最明显见于双侧上肢。虽然肌阵挛似乎是自发出现的，但电生理研究表明，肌阵挛性抽搐在时间和幅度上与动脉搏动相关，并且通过按摩颈动脉窦可抑制。有人提出，目前的肌阵挛是脑干反射性肌阵挛的一种变体，其中动脉搏动通过颈动脉窦和延髓网状结构作为内在触发刺激。
