Frenkel A, Zikk D, Rapoport Y, Vidne B, Himmelfarb M Z
Department of Otorhinolaryngology, Tel Aviv Sourasky Medical Center, Israel.
ORL J Otorhinolaryngol Relat Spec. 1990;52(6):350-4. doi: 10.1159/000276163.
Measurements of the auditory brainstem responses (ABR) were used to assess the functional integrity of the brainstem auditory pathways following open-heart surgery. Recording of ABR was performed in 31 patients before and after open-heart surgery. The values of ABR measurements were compared to those of a control group of normal-hearing subjects. Postoperative aberrations in ABR were observed in 12 patients. Brainstem transmission time measured as wave I to wave V interpeak latency (I-V IPL) was prolonged in 6 patients and shortened in 8 patients. Concomitant impairment in hearing function was not present, and therefore, these changes most probably reflected a functional alteration in the neurological status of the brainstem. Possible explanations of the postoperative changes in I-V IPL are discussed, however, further studies are needed to clarify the pathogenesis of these changes. Measurement of ABR may prove to be an important adjunct in the overall assessment of the neurological status following open-heart surgery.
采用听觉脑干反应（ABR）测量来评估心脏直视手术后脑干听觉通路的功能完整性。对31例患者在心脏直视手术前后进行ABR记录。将ABR测量值与听力正常受试者的对照组进行比较。12例患者术后出现ABR异常。以波I至波V峰间期（I-V IPL）测量的脑干传导时间在6例患者中延长，在8例患者中缩短。听力功能未出现伴随损害，因此，这些变化很可能反映了脑干神经状态的功能改变。文中讨论了I-V IPL术后变化的可能原因，然而，需要进一步研究以阐明这些变化的发病机制。ABR测量可能是心脏直视手术后神经状态整体评估中的一项重要辅助手段。
