颈内动脉内注射丙泊酚定侧语言区和评价半球记忆功能

摘要

目的 在目前阿米妥普遍缺乏的背景下,探讨应用丙泊酚替代阿米妥进行颈内动脉注射进行Wada试验,定侧语言区和评价半球记忆功能的价值.方法 14例拟接受外科治疗的药物难治性部分性癫痫患者纳入本研究.在数字减影脑血管造影条件下,通过双侧颈内动脉分别注射丙泊酚,以麻醉半球对侧肢体肌力达到0级以及患者出现向对侧凝视作为药物充分显效的标志.观察患者麻醉后即刻出现的语言改变,并在获取患者注意力后,依次给予视觉和听觉记忆任务,待肌力完全恢复后,给予任务再认,从而评价麻醉半球的语言功能和记忆功能,并记录患者的不适表现.结果 14例患者均成功定侧了语言半球,其中3例为双侧语言半球,9例为左侧语言优势半球,2例为右侧语言优势半球.同时评价了13例患者的半球记忆功能,拟切除颞叶内侧对侧半球均能维持67％以上记忆功能.在药物注射后观察到注射同侧眼痛、面部肌肉痉挛,发笑,对侧肢体不自主运动,均为一过性表现.结论 颈内动脉注射丙泊酚能安全有效地定侧语言半球和评价半球记忆功能.丙泊酚可以作为一种可选择的药物进行Wada试验.%Objective In the context of worldwide shortage of amytal,explore the intracarotidpropofol test for lateralizing language area and assessing hemispheric memory function.Methods Fourteen patients with refractory partial epilepsy who were candidates for surgical intervention were included in the study.With guide under a digital subtraction angiography,propofol was injected in bilateral intracarotidsequentially.Muscle power deceasing to level 0 at the contralateral limb and eyes gazing to contralateral side were used as the mark of hemispheric anesthesia completely.The immediate language alterations were recorded.To evaluate the bilateral language and memory functions,the visual and auditory memory tasks were performed sequentially once patient could concentrate his attention ; and after limb muscle power recovering to normal level,patients were required to perform a free recall test.Any abnormal responses were recorded.Results Language dominant hemisphere was determined in 14 patients.Nine patients were confirmed as left language dominance,2 patients were right language dominance.The remained 3 patients were considered as bilateral language dominance.Meanwhile,the hemispheric memory function was able be evaluated in 13 patients.More than 67％ memory function was sustained in hemisphere contralateral to mesial temporal lesions.Transient responses including eye pain,facial muscle spasms,laughers and involuntary movements were observed.Conclusion Hemispheric language and memory functions can be assessed with direct intracarotidpropofol injection,and propofol could be an alternative drug to amobarbital used in the Wada test.