מהי בדיקת ברה (ABR/ BERA)?

עמוד הבית » שאלות ותשובות » מהי בדיקת ברה (ABR/ BERA)?

מהי בדיקת ברה (ABR/ BERA)?

בדיקת ברה (ABR/ BERA) היא בדיקה להערכת פעילות מערכת השמיעה על ידי מדידת אותות חשמליים בגזע המוח כתגובה לגירוי קול. הרישום מתבצע בעזרת אלקטרודות חיצוניות המוצמדות למצח ולאוזן הנבדק. מתקבל גרף של כמה גלים: הגל הראשון מקורו בעצב השמע, והגלים הנוספים מקורם בנקודות שונות במוח.

מעבר להופעת הגלים נבדק גם חביון הגלים וזמן המעבר באוזניים.

מכיוון שהבדיקה אינה דורשת שיתוף פעולה של הנבדקים היא יעילה במיוחד לאבחון בעיות שמיעה כבר בשלבים המוקדמים של התפתחות תינוקות. לעיתים, הבדיקה נעשית תחת טשטוש.

מלבד השימוש בבדיקת ABR לצורך אבחנה שמיעתית, היא עוזרת באבחנת מצבים נוירולוגים שונים (כגון גידולים).

מלאו פרטים ונחזור אליכם בהקדם

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