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目的：研究急性一氧化碳中毒后迟发性脑病（DEACMP）的诱发电位（EP）改变．方法：对28例DEACMP患者进行体感诱发电位（SEP）、视觉诱发电位（VEP）、脑十听觉诱发电位（BAEP）检查．结果：SEP、VEP、BAEP异常率分别为78％、69％和32％．SEP中的P40、N50、P60、N75潜伏期（PL）明显延长（P<0.05）．VEP的P100PL显著延长（P<0.05）．BAEP的Ⅰ、Ⅲ、Ⅴ波PL及Ⅰ－Ⅲ、Ⅲ－Ⅴ、Ⅰ－Ⅴ峰间期（IPL）无显著改变（P>0．05）．结论：EP结合临床对DEACMP的定位诊断、病情判断和预后评估有一定意义．
Objective: To study the changes of evoked potentials (EP) of delayed encephalopathy (DEACMP) after acute carbon monoxide poisoning. Methods: The somatosensory evoked potentials (SEP), visual evoked potential (VEP), and brain ten auditory evoked potentials (BAEP) were examined in 28 patients with DEACMP. Results: The abnormal rates of SEP, VEP and BAEP were 78%, 69% and 32% respectively. P40, N50, P60, N75 latency (PL) in SEP were significantly prolonged (P <0.05). V100 P100PL significantly prolonged (P <0.05). There was no significant change in PL, Ⅰ-Ⅲ, Ⅲ-Ⅴ and Ⅰ-Ⅴ interphase (IPL) of Ⅰ, Ⅲ and Ⅴ waves in BAEP group (P> 0.05). Conclusion: EP combined with clinical diagnosis of DEACMP positioning, disease judgment and prognosis of a certain significance.