Caplan L R, Pessin M S, Scott R M, Yarnell P
Neurology. 1986 Nov;36(11):1510-3. doi: 10.1212/wnl.36.11.1510.
In two patients, lateral medullary infarcts were followed by repeated brainstem ischemia. One patient had posturally sensitive vertebrobasilar TIAs, and the other had TIAs followed by quadriparesis. Both had angiographic evidence of intracranial vertebral artery occlusion on one side and severe stenosis of the contralateral vertebral artery. Propagation or embolization of clot from the occluded vertebral artery or decreased blood flow caused by stenosis of the contralateral vertebral artery can cause a bad outcome.
在两名患者中，延髓外侧梗死之后出现了反复的脑干缺血。一名患者有体位敏感的椎基底动脉短暂性脑缺血发作（TIA），另一名患者先是出现TIA，之后发展为四肢瘫痪。两名患者的血管造影均显示一侧颅内椎动脉闭塞，对侧椎动脉严重狭窄。来自闭塞椎动脉的血栓传播或栓塞，或对侧椎动脉狭窄导致的血流减少，都可能导致不良后果。
