Martins Regina Helena Garcia, Tavares Elaine Lara Mendes, Lima Neto Arlindo C, Fioravanti Marisa P
Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu.
Braz J Otorhinolaryngol. 2007 Mar-Apr;73(2):239-44. doi: 10.1016/s1808-8694(15)31072-7.
Teachers frequently report auditory symptoms and excessive noise in classrooms, but noise level measurements are not done routinely. Study model - a prospective clinical trial.
To study auditory symptoms and audiometric exams of teachers and classroom noise levels.
Data from two groups, GI (40 teachers) and GII (40 voluntaries) were studied as follows: age, gender, working conditions, audiometric exams, and classroom noise levels.
In GI there were more females (86%), working in basic teaching (75%), in classes with 21-40 students (70%), with workloads between 26 and 40 hours per week (47%), and variable professional teaching time. Most teachers in GI reported excessive classroom noise (93.5%) and auditory symptoms (65%). In GI, 25% of teachers presented audiometric alterations (versus 10% of controls), with an acoustic notch predominating (11.25%; p<0.05). Noise levels close to 87dBA were recorded in classes at all teaching levels.
occupational hearing loss may occur in teachers. Further studies are needed to confirm this proposition.
教师经常报告课堂上出现听觉症状和过度噪音，但噪音水平测量并非常规进行。研究模式——一项前瞻性临床试验。
研究教师的听觉症状、听力测试以及课堂噪音水平。
对两组数据进行研究，第一组（GI，40名教师）和第二组（GII，40名志愿者），研究内容包括：年龄、性别、工作条件、听力测试以及课堂噪音水平。
在第一组中，女性居多（86%），从事基础教学工作（75%），授课班级学生人数在21至40人之间（70%），每周工作量在26至40小时之间（47%），教龄各不相同。第一组中的大多数教师报告课堂噪音过大（93.5%）和有听觉症状（65%）。在第一组中，25%的教师出现听力测试异常（而对照组为10%），以听觉陷波为主（11.25%；p<0.05）。所有教学水平的课堂记录的噪音水平均接近87分贝。
教师可能会出现职业性听力损失。需要进一步研究来证实这一观点。
