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Occupational hearing loss in teachers: a probable diagnosis
Regina Helena Garcia Martins1, Elaine Lara Mendes Tavares, Arlindo C Lima Neto
1Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu. rmartins@fmb.unesp.br
Unlabelled:
Teachers frequently report auditory symptoms and excessive noise in classrooms, but noise level measurements are not done routinely. Study model - a prospective clinical trial.
Aim:
To study auditory symptoms and audiometric exams of teachers and classroom noise levels.
Material And Method:
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.
Results:
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.
Conclusions:
occupational hearing loss may occur in teachers. Further studies are needed to confirm this proposition.
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