Factors Influencing the Changes of BAEPs in Vertibrobasilar Transient Ischemic Attacks

Park, Young Hyuk; Yoo, Bong Goo; Kim, Kwang Soo; Yoo, Kyung Moo

Ann Clin Neurophysiol > 2000 ;2(2) > Article

Ann Clin Neurophysiol. 2000; 2(2): 101-106.

Young Hyuk Park, Bong Goo Yoo, Kwang Soo Kim, and Kyung Moo Yoo

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

ABSTRACT

Background and Purpose : Brainstem auditory evoked potentials(BAEPs) are responses of the brainstem by auditory stimulation. Vertebrobasilar transient ischemic attacks is the disease that occurs by insufficient circulation in the region of brainstem. The purpose of this study is to know the factors influencing the changes of BAEPs in vertebrobasilar transient ischemic attacks. Methods : The subject of study was 96 patients diagnosed as vertebrobasilar transient ischemic attacks. Patients were divided into two groups according to the BAEPs findings, age, sex, presence of hypertension, diabetes, hyperlipidemia, heart disease, neurologic findings, previous stroke, previous stroke, previous vertebrobasilar transient ischemic attacks, smoking and alcohol drinking, and time period between symptom onset and testing were compared. Results : There were no significant differences in age, sex, and presence of hypertension, diabetes, hyperlipidemia, heart disease, previous stroke history, previous vertebrobasilar transient ischemic attack, smoking, and alcohol drinking between two groups. The presence of abnormal neurologic findings in the first examination and time period between symptom onset and testing were significantly different between normal BAEPs group and abnormal BAEPs one(P < 005). Conclusions : The factors influencing the changes of BAEPs were presence of abnormal neurologic findings and time period between symptom onset and testing. These finding suggest that BAEPs test should be performed in acute stage of ischemic attack.

Key words: Bainstem auditory evoked potentials, Vertebrobasilar transient ischemic attacks, Risk factors