scholarly journals Effects of Rapid Maxillary Expansion on Conductive Hearing Loss

2008 ◽  
Vol 78 (3) ◽  
pp. 409-414 ◽  
Author(s):  
Nihat Kilic ◽  
Ali Kiki ◽  
Hüsamettin Oktay ◽  
Erol Selimoglu
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Normal Function ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Static Compliance ◽  
Fixed Appliance ◽  
Significant Difference ◽  
Conductive Hearing ◽  
Maxillary Deficiency

Abstract Objective: To test the null hypothesis that rapid maxillary expansion (RME) with a rigid bonded appliance has no effect on conductive hearing loss (CHL) in growing children. Materials and Methods: Fifteen growing subjects (mean age 13.43 ± 0.86 years) who had narrow maxillary arches and CHL participated in this study. Three pure-tone audiometric and tympanometric records were taken from each subject. The first records were taken before RME (T1), the second after maxillary expansion (T2) (mean = 0.83 months), and the third after retention (mean = 6 months) and fixed appliance treatment (approximately 2 years) periods (T3). The data were analyzed by means of analysis of variance (ANOVA) and least significant difference (LSD) tests. Results: Hearing levels of the patients were improved and air-bone gaps decreased at a statistically significant level (P < .001) during active expansion (T2–T1) and the retention and fixed appliance treatment (T2–T3) periods. Middle ear volume increased in all observation periods. However, a statistically significant increase was observed only in the T2–T3 period. No significant change was observed in the static compliance value. Conclusions: The hypothesis is rejected. RME treatment has a positive and statistically significant effect on both improvements in hearing and normal function of the eustachian tube in patients having transverse maxillary deficiency and CHL.

Effects of semirapid maxillary expansion on conductive hearing loss

2008 ◽  
Vol 133 (6) ◽  
pp. 846-851 ◽  
Author(s):  
Nichat Kilic ◽  
Hüsamettin Oktay ◽  
Erol Selimoğlu ◽  
Abdulvahit Erdem
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Maxillary Expansion ◽  
Conductive Hearing

Hearing in acromegaly

1984 ◽  
Vol 98 (11) ◽  
pp. 1097-1101 ◽  
Author(s):  
J. A. Doig ◽  
S. Gatehouse
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Population Control ◽  
Bone Conduction ◽  
Control Sample ◽  
Pituitary Surgery ◽  
Significant Difference ◽  
Conductive Hearing ◽  
Air Conduction

AbstractFifty-six individuals with acromegaly referred for pituitary surgery were studied to determine any relationship between acromegaly and sensorineural or conductive hearing loss. Compared to a matched population control sample, no significant difference between the acromegalics and controls has been found, either for air conduction or for bone conduction. The differences between these findings and those published previously are discussed, and reasons proposed to explain the discrepancies.

scholarly journals Air and Bone Conduction Frequency-specific Auditory Brainstem Response in Children with Agenesis of the External Auditory Canal

2017 ◽  
Vol 21 (04) ◽  
pp. 318-322 ◽  
Author(s):  
Pricila Sleifer ◽  
Dayane Didoné ◽  
Ísis Keppeler ◽  
Claudine Bueno ◽  
Rudimar Riesgo
Keyword(s):  
Hearing Loss ◽  
External Auditory Canal ◽  
Conductive Hearing Loss ◽  
Bone Conduction ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Significant Difference ◽  
Brainstem Response ◽  
Conductive Hearing ◽  
Air Conduction

Introduction The tone-evoked auditory brainstem responses (tone-ABR) enable the differential diagnosis in the evaluation of children until 12 months of age, including those with external and/or middle ear malformations. The use of auditory stimuli with frequency specificity by air and bone conduction allows characterization of hearing profile. Objective The objective of our study was to compare the results obtained in tone-ABR by air and bone conduction in children until 12 months, with agenesis of the external auditory canal. Method The study was cross-sectional, observational, individual, and contemporary. We conducted the research with tone-ABR by air and bone conduction in the frequencies of 500 Hz and 2000 Hz in 32 children, 23 boys, from one to 12 months old, with agenesis of the external auditory canal. Results The tone-ABR thresholds were significantly elevated for air conduction in the frequencies of 500 Hz and 2000 Hz, while the thresholds of bone conduction had normal values in both ears. We found no statistically significant difference between genders and ears for most of the comparisons. Conclusion The thresholds obtained by bone conduction did not alter the thresholds in children with conductive hearing loss. However, the conductive hearing loss alter all thresholds by air conduction. The tone-ABR by bone conduction is an important tool for assessing cochlear integrity in children with agenesis of the external auditory canal under 12 months.

Conductive Hearing Loss During Infancy

1991 ◽  
Vol 34 (5) ◽  
pp. 1207-1215 ◽  
Author(s):  
Adele D. Gunnarson ◽  
Terese Finitzo
Keyword(s):  
Hearing Loss ◽  
Brain Stem ◽  
Conductive Hearing Loss ◽  
Long Term Effects ◽  
Binaural Interaction ◽  
Auditory Brain Stem ◽  
Significant Difference ◽  
Group B ◽  
Conductive Hearing ◽  
Fluctuating Hearing Loss

Long-term effects on auditory electrophysiology from early fluctuating hearing loss were studied in 27 children, aged 5 to 7 years, who had been evaluated originally in infancy. For controls (Group A), infant auditory brain stem responses (ABRs) were normal from birth to age 2 years. A second group (Group B) had intermittent conductive hearing loss. A third group (Group C) had more abnormal ABRs during infancy than Group B and more severe and frequent conductive hearing loss. For this follow-up study, all children had normal peripheral hearing at test. ABRs were obtained to monaural and binaural stimuli. Binaural interaction (BI) in the ABR was assessed in difference traces, derived by subtracting summed binaural from summed monaural waveforms.Controls differed from both groups with early hearing loss for wave III and wave V latencies and interpeak I–III and I–V latencies. There was a significant difference in the presence of BI. Eight of 9 A subjects and 8 of 9 B subjects, but only 4 of 9 C subjects, had demonstrable BI. Findings suggest that early fluctuating hearing loss disrupts later auditory brain stem electrophysiology.

scholarly journals A study on correlation of size and site of tympanic membrane perforation with degree of conductive hearing loss in chronic otitis media

2019 ◽  
Vol 5 (4) ◽  
pp. 954
Author(s):  
Nikhil Mathew John ◽  
Karthik Shamanna ◽  
Allen Joe Rodrigues
Keyword(s):  
Hearing Loss ◽  
Tympanic Membrane ◽  
Conductive Hearing Loss ◽  
Statistical Significance ◽  
Disease Process ◽  
Tympanic Membrane Perforation ◽  
Posterior Group ◽  
Significant Difference ◽  
Membrane Perforation ◽  
Conductive Hearing

<p class="abstract"><strong>Background:</strong> The objective of the study was to evaluate the size and site of tympanic membrane perforation, to assess hearing loss in patients with dry tympanic membrane perforation and to correlate the relationship between degree of conductive hearing loss with the size and site of tympanic membrane perforation.</p><p class="abstract"><strong>Methods:</strong> Study (n=150) done to correlate the site and size of tympanic membrane perforations and conductive hearing loss in cases of inactive tubotympanic COM from October 2013 to December 2015. Size of the tympanic membrane perforation was assessed under microscope using a measuring template. Patients were divided into four groups according to size; based on the site: anterior group, posterior group, combined group and divided in to three groups based on the duration of the disease.  </p><p class="abstract"><strong>Results:</strong> Anterior perforations were most common 74 (49.3%). Hearing loss increased as the size of the perforation increased IV&gt;III&gt;II&gt;I [(46.97±6.59)&gt;(38.69±2.63)&gt;(35.13±2.98)&gt;(27.67±1.85) p&lt;0.0001)]. Statistical significance for hearing loss at combined site (41.37±5.9) was higher compared to Posterior (35.21±4.6, p=0.0001) and Anterior (31.7±5.7, p=0.0001). There was statistically significant difference in hearing loss between all three groups (p=0.0001). Degree of hearing loss increased as the duration of the disease increased.</p><p class="abstract"><strong>Conclusions:</strong> Hearing loss is directly proportional to the size of perforation; more for the posterior quadrant perforations when compared to the anterior quadrant perforations of same size; also, hearing loss increases as the duration of the disease process increases.</p>

Sensorineural Hearing Loss in Stapedial Otosclerosis

1984 ◽  
Vol 93 (1) ◽  
pp. 13-16 ◽  
Author(s):  
G. G. Browning ◽  
S. Gatehouse
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Random Sample ◽  
Older Patients ◽  
Conductive Hearing Loss ◽  
Bone Conduction ◽  
Sensorineural Hearing ◽  
Control Subjects ◽  
Significant Difference ◽  
Conductive Hearing

Controversy exists as to whether individuals with stapedial otosclerosis have elevated bone conduction thresholds due to cochlear involvement by the focus. A comparison was made between the Carhart-corrected bone conduction thresholds in 45 unoperated, non-noise-exposed individuals with stapedial otosclerosis and the thresholds in a matched random sample of the population with no conductive hearing loss. No consistent, significant difference was discerned. It is considered that individuals with stapedial otosclerosis do not in general have elevated bone conduction thresholds compared with control subjects. However, there was a suggestion that there may be a small, progressive elevation of bone conduction thresholds in older patients.

scholarly journals A comparative study of the outcomes of temporalis fascia graft versus tragal perichondrium graft in type 1 tympanoplasty in our experience

2017 ◽  
Vol 4 (1) ◽  
pp. 60
Author(s):  
Santhanakrishnan K. ◽  
Poornima S. Bhat
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Temporalis Fascia ◽  
Hearing Gain ◽  
Type 1 Tympanoplasty ◽  
Fascia Graft ◽  
Significant Difference ◽  
Considerable Morbidity ◽  
Conductive Hearing

<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">COM causes considerable morbidity with ear discharge, conductive hearing loss and complications. Type 1 tympanoplasty is a surgical procedure which intends improves the hearing and quality of the life. Comparison of the outcomes will help to determine the merits or demerits of a particular graft. </span></p><p class="abstract"><strong>Methods:</strong> <span lang="EN-IN">The study was conducted in the department of ENT, SMVMCH, Pondicherry from April 2015 to April 2017. A detailed history taking, thorough clinical examination done for these patients. PTA was done before the procedure, post operatively at 3<sup>rd</sup> month. Hearing improvement analysed using different parameters like type of graft used, hearing gain, graft uptake; the data collected was tabulated and subjected to statistical analysis.  </span></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">All the patients had COM, mucosal type, with conductive hearing loss of &lt;40 dB. 23 patients underwent type 1 tympanoplasty by underlay technique using temporalis fascia, 19 patients using tragal perichondrium. There was no significant difference in total hearing gain at 3<sup>rd</sup> month and graft uptake between temporalis fascia and tragal perichondrium. </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">This study compared the outcomes of temporalis fascia and tragal perichondrium graft with respect to hearing gain and graft uptake. Tragal perichondrium graft equally effective as temporalis fascia graft in terms of hearing gain and graft uptake.</span></p>

Sign in / Sign up

Export Citation Format

Share Document