ABSTRACT
Objective:To investigate the characteristics of wideband acoustic immittance（WAI） measurements in patients with unilateral Ménière's disease（MD） and evaluate the clinical value of WAI in diagnosis of MD. Methods:WAI was performed in 30 patients with unilateral MD（30 ears for symptomatic and 30 ears for asymptomatic） and in 26 healthy individuals（52 ears）（control group）. The WAI measurements, including the frequency first appearing two peaks in energy absorbance（EA） tympanogram, resonance frequency（RF）, the peak value of absorbance（PVA）, the integral area of absorbance（IAA）, EA curve at peak pressure, were analyzed. Results:①The occurrence of two peaks in EA tympanogram in both the MD symptomatic and asymptomatic ear was observed in 27 ears（84.4%）, and 38 ears（70.4%） in the control group, with no significant difference in the frequency of first appearing in two peaks onset between the groups（all P>0.05）. ②The RF of the MD symptomatic ears was significantly lower than that of the asymptomatic ears（t=-3.544, P=0.001） and that of the control subjects（t=2.084, P=0.041）; there was no difference of RF between the MD asymptomatic ears and the control group（P>0.05）. ③The PVA were significantly lower in both MD symptomatic（t=4.240, P<0.01） and asymptomatic ears（t=4.202, P=0.001） than in controls. ④The IAA in MD symptomatic（t=3.295, P=0.001） and asymptomatic ears（t=3.193, P=0.003） was significantly lower than in the control group. ⑤Comparison of the EA curve at peak pressure of the three groups: the EAs of MD symptomatic ears were lower than those of the control group at the range of 1 059-2 911 Hz（all P<0.05）; the EAs of MD symptomatic ears were lower than those of MD asymptomatic ears within 1 000 Hz and 1 834-2 119 Hz（all P<0.05）; the EAs of MD asymptomatic ears were lower than those of the control group at the range of 515-2 748 Hz（all P<0.05）. Conclusion:Symptomatic ears in unilateral MD patients show alterations in some WAI measurements compared to asymptomatic ears and/or controls, suggesting that middle ear mechanical fuction of the affected side may be modified due to the endolymphatic hydrops. The clinical significance of WAI needs to be further explored in the context of evaluating MD.
Subject(s)
Humans , Meniere Disease/diagnosis , Endolymphatic Hydrops/diagnosis , Ear , Hearing Tests , AcousticsABSTRACT
Objective To explore effective nursing intervention through clinical analysis of middle ear function of children with obstructive sleep apnea hypopnea syndrome(OSAHS).Methods Tympanogram was obtained from both pre-operation and post-operation in 413 OSAHS cases(the OSAHS group).Audiogram was conducted if the tympanogram was abnormal.There were 279 cases of normal children in the control group.The incidence of middle ear function loss of two groups were compared.Results 288 cases(328 ears) had some degree of middle ear dysfunction,accounting for 69.73％.69 cases had some degree of hearing loss,accounting for 16.71％.The incidences of middle ear dysfunction and degree of hearing loss in the OSAHS group were higher than 7.53％ and 1.43％ of the control group.The hearing ability was gained after operation in both groups.Conclusions The incidence of middle ear dysfunction is higher in children with obstructive sleep apnea hypopnea syndrome.But the bad influence alleviated with age.Therefore,early detection,timely treatment and effective nursing can achieve good effect.
ABSTRACT
Objective The aim of the study was to analyse the middle ear function of one hundred and twenty-five newborns using 226,678,1 000 Hz tympanometry. Methods Tympanometries with 226,678,1 000 Hz probe tones were obtained from 125 newborns (250 ears) by means of GSI Tympstar middle ear analyzer. The newborns with abnormal tympanograms were referred for temporale CT. Results One case of 226 Hz tympanograms was type "As" while others were all type "A",of which single-peaked tympanograms was 43.2%(108/250),W-shaped tympanograms was 56.8%(142/250). The abnormal pattern of 678 Hz tympanograms were 74 ears,and the abnormal pattern of 1 000 Hz tympanograms were 35 ears. 43 newborns (86 ears) have accepted temporale CT and results showed 30 middle ears with effusion. Conclusion 226 Hz probe tone tympanometry couldn't reflect the middle ear function of newborns. The sensitivity of 678 Hz probe tone tympanometry in the diagnosis of middle ear function of newborns was good,but specificity was worse. The sensitivity and specificity of 1 000 Hz probe tone tympanometry were the best.
ABSTRACT
Objective To study the effects of multi frequency tympanometry and acoustic stapedius reflexes on the diagnosis of the middle ear functions of infants.Methods Tympanometries with 226,678 and 1 000 Hz probe tones and 500 and 1 000 Hz acoustic stapedius reflexes were performed on infants at age 0~1 year.128 normal infants(256 ears) and 104 abnormal infants(168 ears) were tested with GSI Tympstar middle ear analyzer.Results The patterns of 226 Hz tympanograms were non-peaked,single-peaked and W-shaped.There were no significant differences between two groups of infants aged 0～6 months.The patterns of 678 Hz and 1 000 Hz tympanograms showed significant differences between two groups of infants aged 0～1 year.The outcomes of 500 Hz and 1 000 Hz acoustic stapedius reflexes showed no differences between the same age groups.There were significant differences between normal group and abnormal group.Conclusion Tympanometry with 678 Hz and 1 000 Hz probe tones can yield accurate diagnostic results in the assessment of the middle ear functions for infants younger than six months.The tympanometry with three frequency probe tones is sensitive to infants aged 6～12 months.The outcomes of acoustic stapedius reflexes at 500 and 1 000 Hz show no differences between the same age groups,but presences become more noticeable as a function of ages.