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Daily impedance audiometric screening of children in a day-care institution
Insights
Impedance audiometry revealed that type B tympanometric curves in daycare children were common but often transient. Many B curves resolved quickly, though some persisted for extended periods.
Area of Science:
- Pediatrics
- Audiology
- Otology
Background:
- Daycare settings can expose children to increased risk of middle ear infections.
- Impedance audiometry is a valuable tool for assessing middle ear function.
- Tympanometric curve patterns provide insights into middle ear status.
Purpose of the Study:
- To evaluate the frequency and duration of tympanometric curve types in young children attending daycare.
- To determine the stability and resolution patterns of type B tympanometric curves.
Main Methods:
- Daily impedance audiometry was performed on 57 children over 4 weeks.
- A Madsen Electronics ZS 330 tympanoscope was utilized.
- Tympanometric curves were classified into types A, C1, C2, and B, with specific criteria for type B.
Main Results:
- A total of 43 episodes of type B curves were recorded.
- 16 episodes of type B curves resolved within 1 day.
- 8 episodes of type B curves persisted for 26 days or longer.
Conclusions:
- Type B tympanometric curves are frequent in daycare attendees but often short-lived.
- The duration of type B curves varies significantly, with some resolving rapidly and others persisting.
- Further research is needed to understand the long-term implications of persistent type B curves in this population.
Abstract:
Fifty-seven children in a fairly new day-care institution were examined daily by impedance audiometry for 4 weeks. A Madsen Electronics ZS 330 tympanoscope was used. The tympanometric curves were divided into types A, C1, C2, and B. Completely flat curves and cases in which the compliance was less than 0.25 ml, combined with an absent ipsilateral stapedial reflex, were also interpreted as type B. The object was to ascertain how quickly the types changed and how stable the B curves were. A total of 43 episodes of B curves occurred. Of them, 16 lasted for only 1 day and thereafter 9 became quite flat. Only a few lasted for 8-23 days and 8 continued for 26 days or longer.