scholarly journals Improvement of Hearing After Myringoplasty: A Study on 50 Cases at HFRCMCH

2010 ◽  
Vol 15 (Number 2) ◽  
pp. 9-14
Author(s):  
Md. A Sikder ◽  
Md. Daulatuzzaman ◽  
SM K A Mazumder ◽  
N U Khan ◽  
Md. S Alam
Keyword(s):  
Tympanic Membrane ◽  
General Anaesthesia ◽  
Bone Conduction ◽  
Hearing Improvement ◽  
Hearing Gain ◽  
Study Population ◽  
Air Conduction

The aim of this study was to assess hearing improvement after myringoplasty within ten weeks following surgery. The study population consisted of 30 patients who were suffering from CSOM-77". Pre-operative and post-operative eraminations of the patients were conducted clinically as well as audiologically. Pre-and post-operative air-bone (A-B) gap were calculated by raking the averages of bone conduction and air conduction at the frequencies of 300. 1000 and 2000 Hz. Myringoplasty was done with underlay technique under general anaesthesia by postaural approach. Temporal 'muck fascia was used as grafting material for reconstruction of the tympanic membrane. Pre-operatively, air-bone gap of 30 db or more was observed in 39 (78%) patients whereas post-operatively A-B gap of 30 db or mare was observed in only one patient. Using hearings gain exceeding 15 dB as the criterion. 39 (78%) patients had their hearing gain exceeding 15 dB. Using post-operative A-B gap within 20 dB as the criterion. 42 (84%) patients had their A-8 gap within 20 dB. Myringoplasty is a beneficial procedure for hearing improvement. Using the proportion of patients with a post-operative A-B gap of 30 dB as the criterion, in this study. 98% of patients achieved their A-B gap closer within 30 dB. Using hearing gain exceeding 15 dB as the criterion, 78% patient had their hearing gain exceeding 15 dB.

scholarly journals Hearing gain after myringoplasty in relation to the size of tympanic membrane perforation

2020 ◽  
Vol 25 (1) ◽  
pp. 54-59
Author(s):  
Sutanu Kumar Mondal ◽  
Ashim Kumar Biswas ◽  
Md Mahmudul Huq ◽  
Md Hasan Ali ◽  
Md Kamruzzaman ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Tympanic Membrane ◽  
Bone Conduction ◽  
Tympanic Membrane Perforation ◽  
Medium Size ◽  
Hearing Gain ◽  
Bone Conduction Threshold ◽  
Large Size ◽  
Membrane Perforation ◽  
Air Conduction

Objectives: To assess hearing gain after successful myringoplasty in relation to the size of tympanic membrane perforation. Methods: This cross-sectional study was done in the department of otolaryngology and head neck surgery, BSMMU, Sahbag, Dhaka during the period of January 2009 to December 2010.A total of 60 patients were under went myringoplasty operation after taking detailed history, clinical examination and investigation. Preoperative and postoperative hearing assessment was done. Analysed data presented by various tables, graphics and figures. Results: In case of small size perforation preoperative mean bone conduction threshold was 7.66 dB, mean air conduction threshold was 34.14 dB and mean air bone gap was 26.48 dB. In case of medium size perforation preoperative mean bone conduction threshold was 9.61 dB, mean air conduction threshold was 44.48 dB. Mean air bone gap was 34.87 dB. In case of large size perforation preoperative mean bone conduction threshold was 13.12 dB, mean air conduction threshold was 59 dB, and mean air bone gap was 45.88 dB. Hearing loss increases with increasing size of perforation. Ahmed and Rahim (1979) showed in the study that hearing loss increases with increasing the size of the perforation which was relevant in the study. After myringoplasty post-operative mean air bone gap was 21.24 dB in small size, 21.74 dB in medium sized and 24 dB in large size. From the record improvement of mean air bone gap or hearing gain was 5.24 dB in small size perforation respectively. The different of air bone gap closure between small and medium size perforation was statistically significant by unpaired’ test. Conclusion: Hearing gain after myringoplasty is better in large size perforation. Bangladesh J Otorhinolaryngol; April 2019; 25(1): 54-59

S232 – Hearing Gain Following Stapes Surgery Maintained Long-term?

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P153-P153
Author(s):  
Purushotam Sen ◽  
Abir K Bhattacharyya
Keyword(s):  
Observational Studies ◽  
Quality Evaluation ◽  
Data Extraction ◽  
Bone Conduction ◽  
Stapes Surgery ◽  
Long Term Results ◽  
Hearing Results ◽  
Hearing Gain ◽  
Air Conduction

Objectives To analyse whether the hearing gain following stapes surgery is maintained long-term. Methods Databases (PubMed, EMBASE and MEDLINE) were searched systematically, with no limits on the year or language of publications, for observational studies on the long-term hearing results of stapedectomy (>10 years). References identified from pertinent reviews and articles were also retrieved. 2 reviewers independently searched the databases and selected the studies using pre-specified standardized criteria. These criteria included appropriate adjustments for confounding factors in the analyses. The terms used in the search included stapes surgery, stapedectomy, stapedotomy, long-term results, hearing gain. Data extraction and study quality evaluation were performed independently and results were pooled quantitatively. Results Early studies noted that both air conduction (AC) and bone conduction (BC) deteriorated with time, resulting in a return to baseline pre-operative hearing in the long-term. More recent studies showed that in the long term, the hearing gain was maintained by 75% of patients despite the advent of presbycusis. Surgeons' experience may play a more important role than the type of stapes surgery. On average, studies have shown that the air bone gap tended to increase at a rate of 0.9 dB per year. Conclusions Though some earlier studies were equivocal, recent studies indicate that most stapes surgery patients maintain good hearing long-term, even though there is a gradual decline in the air conduction and bone conduction thresholds. Longitudinal studies are required to better understand this subject.

scholarly journals Association Between the Air-Bone Gap and Vibration of the Tympanic Membrane After Myringoplasty

2021 ◽  
pp. 014556132098364
Author(s):  
Ying Zhang ◽  
Jie Wang ◽  
Yu Wang ◽  
Qianjie Fu ◽  
Yongxin Li
Keyword(s):  
Tympanic Membrane ◽  
Bone Conduction ◽  
Hospital Staff ◽  
Contributing Factors ◽  
Important Indicator ◽  
Hearing Status ◽  
Number Of Factors ◽  
The Relationship ◽  
Normal Controls ◽  
Air Conduction

Air-bone gap (ABG) is an important indicator of hearing status after myringoplasty. A number of factors have been associated with ABG, but some patients still have ABG without identifiable cause. This study aimed to evaluate the relationship between tympanic membrane (TM) vibration using laser Doppler vibrometry (LDV) and ABG after myringoplasty. Between January 2013 and January 2015, 24 patients with ABG of unknown cause after myringoplasty were enrolled at the Beijing Tongren Hospital. Thirty normal controls were recruited from the hospital staff. All patients underwent primary overlay myringoplasty. Pre- and postoperative air conduction (AC) and bone-conduction (BC) thresholds, and ABG were measured. Umbo velocity transfer function (UVTF) for vibration of TM was measured with LDV. Air conduction thresholds were significantly reduced after myringoplasty (all P < .05), while BC thresholds were not significantly changed (all P > .05). ABG was significantly reduced after myringoplasty (all P < .05). Air-bone gap was correlated with UVTF at 1.0 kHz (r = −0.46; P = .024). For patients with UVTF >0.08 mm/s/Pa, ABG was correlated with UVTF (r = −0.56; P = .029). For post-myringoplasty ABG without readily observable causes, there was a significant relationship between ABG and TM vibration. These results provide new insights in the understanding of this relationship and may help explain ABG after myringoplasty when there are no clear contributing factors.

scholarly journals Evaluation of Graft Uptake and Hearing Assessment after Palisade Myringoplasty

2018 ◽  
Vol 56 (212) ◽  
pp. 770-773 ◽  
Author(s):  
Poonam KC
Keyword(s):  
Tympanic Membrane ◽  
Otitis Media ◽  
Uptake Rate ◽  
Pure Tone ◽  
Statistical Significance ◽  
Chronic Otitis Media ◽  
Pure Tone Audiometry ◽  
Long Term Results ◽  
Hearing Improvement ◽  
Hearing Gain

Introduction: Cartilage as a graft for closure of tympanic membrane has got superior benefits than other usual grafts (temporalis fascia and perichondrium). Cartilage supported myringoplasty with palisade technique has good result of graft uptake rate, even under difficult conditions. This technique brings very good functional and better long-term results. This study is done to assess graft uptake rate and hearing improvement after myringoplasty with cartilage palisade technique. Methods: It is a descriptive, hospital based observational study done at Manipal Teaching Hospital, Pokhara between 2014-2017. A total of 45 patients aged between 13 years and 44 years diagnosed with chronic otitis media-mucosal were taken. Pure tone audiometry was done before and six months after surgery. Graft uptake and Post-operative hearing gain was evaluated after six months. Statistical analysis was done by Statistical Package for Social Sciences version 16.0. Statistical significance was set at P<0.05. Results: Graft uptake rate was 41 (91.1%). The mean pre-and post-operative pure tone average were 26.88dB and 8.44dB respectively. The post-operative hearing gain was 18.36dB. Hearing improvement after surgery was found to be statistically highly significant with P<0.001. Conclusions: Cartilage supported myringoplasty using palisade technique is preferred for chronic otitis media-mucosal with large and sub-total tympanic membrane perforation.

scholarly journals Bone-conduction threshold and air-bone gap may predict frequency-specific air-conduction threshold after tympanoplasty

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0248421
Author(s):  
Ethan I. Huang ◽  
Yu-Chieh Wu ◽  
Hsiu-Mei Chuang ◽  
Tzu-Chi Huang
Keyword(s):  
Middle Ear ◽  
Bone Conduction ◽  
Disease Process ◽  
Hearing Improvement ◽  
Exclusion Criteria ◽  
Bone Conduction Threshold ◽  
Estimate Frequency ◽  
Quantitative Statistics ◽  
Preoperative Predictors ◽  
Air Conduction

Postoperative hearing improvement is one of the main expectations for patients receiving tympanoplasty. The capacity to predict postoperative hearing may help to counsel a patient properly and avoid untoward expectations. It is difficult to predict postoperative hearing without knowing the disease process in the middle ear, which can only be assessed intraoperatively. However, the duration and extent of the underlying pathologies may represent in bone-conduction threshold and air-bone gap. Here in patients undergoing tympanoplasty without ossiculoplasty, we sorted and separated the surgery dates into the first group to build the predicting models and the second group to test the predictions. There were 87 and 30 ears, respectively. No specific enrollment or exclusion criteria were based on underlying pathologies such as the perforation size of the tympanic membrane or the middle ear conditions. The results show that bone-conduction threshold and air-bone gap together predicted air-conduction threshold after the surgery, including each frequency of 0.5k, 1k, 2k, and 4k Hz. The discrepancies between the predictions and recordings did not differ among these four frequencies. Of the variance in mean postoperative air-conduction threshold, 56.7% was linearly accounted for by these two preoperative predictors in this sample. The results suggest a trend that, the higher the frequency, the larger the part was accounted for by these two preoperative predictors. These together may help a surgeon to estimate frequency-specific hearing outcome after the surgery, answer patients’ questions with quantitative statistics, and counsel patients with proper expectations.

scholarly journals Ossicular reconstruction of incudo-stapedial joint by glass ionomer—a study of 24 cases

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Meenesh Juvekar ◽  
Baisali Sarkar
Keyword(s):  
Otitis Media ◽  
Tertiary Care ◽  
Bone Conduction ◽  
Glass Ionomer Cement ◽  
Care Hospital ◽  
Glass Ionomer ◽  
Hearing Improvement ◽  
Ossicular Reconstruction ◽  
Ionomer Cement ◽  
Air Conduction

Abstract Background Chronic otitis media is one of the major health issues worldwide resulting in partial or complete loss of conductive hearing mechanism including the tympanic membrane and ossicular assembly. The aim of the study is to assess hearing improvement after reconstructing the incudo-stapedial joint with glass ionomer cement. Here, a prospective observational study was done in a tertiary care hospital. Patients of chronic mucosal otitis media were operated, and intraoperatively incudo-stapedial joint discontinuity was restored using glass ionomer cement. Post-operative follow-up was done at 1-month, 3-month, 6-month, and 1-year intervals, and hearing was evaluated by doing pure tone audiometry with air conduction at 0.5, 1, 2, 3, 4, 6, and 8 kHz and bone conduction at 0.5, 1, 2, 3, and 4 kHz. Tabulation was done by calculating the air-bone gap in each patient. Results In our study, the patients showed statistically significant improvement in air conduction thresholds and near closure of air-bone gap post-operatively. The mean AC threshold is 15 dB with 91.67% patients having closure of ABG < 20 dB at the end of the 3rd month. Hearing was also evaluated at 6-month and 1-year intervals, which showed good improvement in hearing levels. Conclusions Glass ionomer is a simple, physiological, and cost-effective method of tympano-ossicular reconstruction with certain significant post-operative hearing improvement.

Audiological Outcomes of Stapedotomy: Our Experience

2018 ◽  
Vol 5 (2) ◽  
pp. 1-4
Author(s):  
R. Pradhananga ◽  
G. Nair ◽  
R. Sapathkumar ◽  
M. Kameswaran
Keyword(s):  
Clinical Study ◽  
Pure Tone ◽  
Bone Conduction ◽  
Prospective Clinical Study ◽  
Hearing Improvement ◽  
Gap Closure ◽  
Age Range ◽  
Air Conduction

Objective: This study was aimed to sequentially document the patient’s audiological improvement after stapedotomy as measured by pure tone audiometry.Material and Methods: This prospective clinical study was performed in a total of 100 patients (age range: 20 – 63 years), diagnosed with Otosclerosis who underwent Stapedotomy at the Department of Otology, Madras ENT Research Foundation, Chennai between September 2010 to March 2012. Pre-operative and Post-operative audiometric evaluation was done using the same conventional pure tone audiometer with standard calibrations. Post-operative audiometry was sequentially performed at 6 months, 1 year and 2 years. Bone-conduction and air conduction thresholds and the Air-bone gap (ABG), were assessed at each schedule at 0.5 KHz, 1 KHz, 2 KHz and 4 KHz frequencies respectively.Result: All patients had significant audiological improvement as measured by their sequential pure tone audiometries. Overall, the frequency specific pre-operative mean average Air-Bone gap was 52.3dB at 500Hz, 36.5dB at 1KHz, 39.3dB at 2KHz, 38.7dB at 4KHz and the frequency specific postoperative mean average Air-Bone Gap closure was achieved by 27.8dB at 500Hz, 29.6dB at 1KHz, 13.6dB at 2KHz, 11.4dB at 4KHz, by the time of 2 years of follow up. A successful closure of AB gap >10dB was achieved in these speech frequencies in 80% of cases. The frequency specific bone-conduction thresholds were unchanged postoperatively. Two patients developed post-operative vertigo, out of which 1 developed SNHL after 3 weeks of surgery.Conclusion: The study confirms that stapedotomy is a safe and successful procedure in the hands of a well trained otologist, providing long-term hearing improvement to patients with otosclerosis.

High-Frequency Air-Conduction and Electric Bone-Conduction Audiometry: Age and Sex Variations

1991 ◽  
Vol 20 (3) ◽  
pp. 181-189 ◽  
Author(s):  
Heikki Löppönen ◽  
Martti Sorri ◽  
Risto Bloigu
Keyword(s):  
High Frequency ◽  
Bone Conduction ◽  
Air Conduction ◽  
Age And Sex

Mutual cancellation between tones presented by air conduction, by bone conduction and by non-osseous (soft tissue) bone conduction

2012 ◽  
Vol 283 (1-2) ◽  
pp. 180-184 ◽  
Author(s):  
Shai Chordekar ◽  
Leonid Kriksunov ◽  
Liat Kishon-Rabin ◽  
Cahtia Adelman ◽  
Haim Sohmer
Keyword(s):  
Soft Tissue ◽  
Bone Conduction ◽  
Air Conduction

scholarly journals Vibrational and Acoustical Characteristics of Ear Pinna Simulators That Differ in Hardness

2021 ◽  
Vol 11 (3) ◽  
pp. 327-334
Author(s):  
Ryota Shimokura ◽  
Tadashi Nishimura ◽  
Hiroshi Hosoi
Keyword(s):  
External Auditory Canal ◽  
Sound Pressure ◽  
Bone Conduction ◽  
Calibration Method ◽  
Vibration Acceleration ◽  
Spectral Peaks ◽  
Ear Cartilage ◽  
A Current ◽  
Air Conduction ◽  
Dominant Frequencies

Because cartilage conduction—the transmission of sound via the aural cartilage—has different auditory pathways from well-known air and bone conduction, how the output volume in the external auditory canal is stimulated remains unknown. To develop a simulator approximating the conduction of sound in ear cartilage, the vibrations of the pinna and sound in the external auditory canal were measured using pinna simulators made of silicon rubbers of different hardness (A40, A20, A10, A5, A0) as measured by a durometer. The same procedure, as well as a current calibration method for air conduction devices, was applied to an existing pinna simulator, the Head and Torso Simulator (hardness A5). The levels for vibration acceleration and sound pressure from these pinna simulators show spectral peaks at dominant frequencies (below 1.5 kHz) for the conduction of sound in cartilage. These peaks were likely to move to lower frequencies as hardness decreases. On approaching the hardness of actual aural cartilage (A10 to A20), the simulated levels for vibration acceleration and sound pressure approximated the measurements of human ears. The adjustment of the hardness used in pinna simulators is an important factor in simulating accurately the conduction of sound in cartilage.

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