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Abstract
Current tympanometric norms have acknowledged the relevance of age as an influencing factor. However, little attention has been afforded to other potentialities such as the non-pathological effects of gender, ear asymmetry, and racial heritage. This study aimed to examine normative tympanometric findings in a large sample of Chinese schoolchildren. Using a Madsen 901 Middle Ear Analyzer, data was collected from 269 children (538 ears), ranging in age from 6.2–12.7 years (mean = 9.4 years, SD = 1.7), in Jiangsu province. Descriptive statistics were calculated for the parameters of equivalent ear canal volume (χ = 1.03, SD = 0.25, 90% = 0.68–1.46), peak compensated static acoustic admittance (χ = 0.58, SD = 0.34, 90% = 0.26–1.13), tympanometric width (χ = 112, SD = 36, 90% = 62–156), and peak pressure (χ = − 25, SD = 30, 90% = − 85 + 10). Statistically significant ear asymmetry and grade/age effects were established, although differences found were minor. In comparison with past studies in Caucasian paediatric populations, the Chinese normative data displayed minimal disparities.
Sumario
Se ha reconocido en las normas timpanométricas actuales la relevancia de la edad como un factor de influencia. Sin embargo, se ha puesto poca atención a otros factores potenciales como el efecto no patológico del género, la asimetría entre oídos y la herencia racial. Este estudio intenta examinar los hallazgos normativos timpanométricos en una gran muestra de escolares Chinos. Se utilizó un analizador de oído medio Madsen 901 y se colectaron datos de 269 niños (328 oídos) con edades entre 6.2 y 12.7 años (media = 9.4 años, DS = 1.7) en la provincia de Jiangsu. Se calcularon estadísticas descriptivas para los parámetros de equivalencia del volumen del conducto auditivo externo (χ = 1.03, SD = 0.25, 90% = 0.68–1.46), la admitancia acústica estática pico compensada (χ = 0.58, SD = 0.34, 90% = 0.26–1.13), la amplitud del timpanograma (χ = 112, SD = 36, 90% = 62–156), y la presión pico (χ = − 25, SD = 30, 90% = − 85 + 10). Se establecieron los efectos estadisticamente significativos en cuanto a asimetría de oídos y diferencia grado/edad, aunque las diferencias encontradas fueron menores. Los datos normativos mostraron disparidades mínimas, en comparación con otros estudios en la población pediátrica China.
| Abbreviations | ||
| ANOVA | = | analysis of variance |
| OME | = | otitis media with effusion |
| Peak Ytm | = | peak compensated static acoustic admittance |
| SD | = | standard deviation |
| TPP | = | tympanometric peak pressure |
| TW | = | tympanometric width |
| VEA | = | equivalent ear canal volume |
| Abbreviations | ||
| ANOVA | = | analysis of variance |
| OME | = | otitis media with effusion |
| Peak Ytm | = | peak compensated static acoustic admittance |
| SD | = | standard deviation |
| TPP | = | tympanometric peak pressure |
| TW | = | tympanometric width |
| VEA | = | equivalent ear canal volume |