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1.
Artigo em Chinês | MEDLINE | ID: mdl-36597371

RESUMO

Objective:To investigate the effect and influencing factors of individualized operation for congenital preauricular fistula in children. Methods:The clinical data of 98 cases (109 ears) of congenital preauricular fistula treated in Department of Otolaryngology,Fuzhou Children's Hospital of Fujian Medical University from July 2016 to December 2020 were retrospectively analyzed. According to the characteristics and infection of preauricular fistula,they were divided into common type and variant type,static period of inflammation and period of infection.Individual surgical methods such as classical fistula resection, double fusiform incision and fistula location resection were used respectively.The efficacy,complication and influencing factors of different surgical methods were analyzed. Results:The operation time of classical fistula resection was shorter, and the difference was statistically significant(t = -2.905 and-3.005 respectively, all P<0.05). According to the stages and types of fistulas, the selection of individualized surgical methods had achieved good results. There was no significant difference in incision complications and fistula recurrence among different surgical methods (all P>0.05). Conclusion:Once infection occurs in congenital preauricular fistula, surgical resection should be performed as soon as possible after infection control, or as early as possible after infection maximum control if infection cannot completely subside. Surgical incision design should be individualized, complete resection of fistulas and lesions, minimally invasive and aesthetic.


Assuntos
Anormalidades Craniofaciais , Fístula , Criança , Humanos , Estudos Retrospectivos , Fístula/cirurgia , Orelha/patologia , Anormalidades Craniofaciais/patologia
2.
J Acoust Soc Am ; 152(6): 3294, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36586876

RESUMO

For listeners with bilateral cochlear implants (BiCIs), patient-specific differences in the interface between cochlear implant (CI) electrodes and the auditory nerve can lead to degraded temporal envelope information, compromising the ability to distinguish between targets of interest and background noise. It is unclear how comparisons of degraded temporal envelope information across spectral channels (i.e., electrodes) affect the ability to detect differences in the temporal envelope, specifically amplitude modulation (AM) rate. In this study, two pulse trains were presented simultaneously via pairs of electrodes in different places of stimulation, within and/or across ears, with identical or differing AM rates. Results from 11 adults with BiCIs indicated that sensitivity to differences in AM rate was greatest when stimuli were paired between different places of stimulation in the same ear. Sensitivity from pairs of electrodes was predicted by the poorer electrode in the pair or the difference in fidelity between both electrodes in the pair. These findings suggest that electrodes yielding poorer temporal fidelity act as a bottleneck to comparisons of temporal information across frequency and ears, limiting access to the cues used to segregate sounds, which has important implications for device programming and optimizing patient outcomes with CIs.


Assuntos
Implante Coclear , Implantes Cocleares , Adulto , Humanos , Estimulação Acústica , Implante Coclear/métodos , Orelha , Som
3.
Acta Otolaryngol ; 142(9-12): 675-678, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36519274

RESUMO

BACKGROUND: Delayed endolymphatic hydrops (DEH) is a rare disease, and the actual number of patients in Japan remains unknown. OBJECTIVE: To investigate the number and prevalence of patients with DEH in Japan. METHODS: In total, 781 departments of otolaryngology in Japan were selected for survey by stratified random sampling according to the total number of hospital beds. We sent questionnaires to the target departments and collected data regarding the number of patients with DEH who visited those departments in 2019. RESULTS: The overall response rate was 68.0% (531 departments). The estimate number of patients with DEH in Japan was 962, and the prevalence was calculated to be 0.8 per 100,000 population. CONCLUSION: Patients with DEH were extremely rare in Japan. SIGNIFICANCE: This may be the first nationwide epidemiological study on the number and prevalence of patients with DEH in Japan or in the world.


Assuntos
Hidropisia Endolinfática , Humanos , Hidropisia Endolinfática/epidemiologia , Japão/epidemiologia , Prevalência , Orelha , Inquéritos e Questionários
4.
J Craniofac Surg ; 33(8): 2644-2649, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36409846

RESUMO

Webbed neck is a rare condition characterized by bilateral subcutaneous bands, which extend from approximately the mastoid to the acromion. Given its rarity, the literature lacks a review of the techniques used in the repair of this condition. We performed a scoping review to define and summarize the surgical techniques been used in the treatment of webbed neck, with the goal of better equipping the surgeons' armamentarium. Two databases, PubMed and Scopus, were searched from inception through December 27, 2021. Studies were considered for inclusion if they (1) described the webbed neck condition and (2) reported results of surgical correction of this condition. Surgical outcomes and follow-up durations were reported as available. Twenty-two manuscripts were analyzed and included data on 60 patients. The most common syndrome associated with webbed neck was Turner syndrome (48 patients). The most frequently documented procedure technique was a Z-Plasty (38 patients). Other procedures described included: butterfly correction, V-Y Plasty, posterior cervical lift, skin excision, tissue expansion plus skin excision, T to M rearrangement, and subcutaneous fascial excision. Documented complications included hypertrophy of procedure scars or webbed neck recurrence. In summary, we present the first full literature review of the surgical techniques used in the repair of webbed neck. When selecting the technique for repair of the webbed neck, function and cosmesis are important considerations. Future studies should collect standardized outcomes data to appropriately assess and compare the described procedures.


Assuntos
Anormalidades da Pele , Síndrome de Turner , Humanos , Pescoço/cirurgia , Anormalidades da Pele/cirurgia , Orelha/cirurgia , Síndrome de Turner/cirurgia , Expansão de Tecido
5.
Sci Rep ; 12(1): 19796, 2022 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-36396714

RESUMO

Although the association between balance and hearing thresholds at different frequencies in the right/left ear is crucial, it has received scant empirical attention. Balance is widely ignored when evaluating hearing in adults. This study examined the relative contribution of left versus right ear hearing at different frequencies to balance, and the mediating role of suprathreshold speech perception on age-balance associations. Pure tone hearing thresholds (500-4000 Hz), suprathreshold speech perception, balance, and risk of falling were evaluated in 295 adults. The results indicate that the right ear contributes more to balance than the left ear. This might imply dominance of the left hemisphere in processing hearing cues for balance. Frequencies within the speech range (500/1000/2000 Hz) were correlated with balance and mediated the interaction between age and balance. These results should be considered when tailoring hearing and balance rehabilitation programs.


Assuntos
Orelha , Percepção da Fala , Audição , Testes Auditivos , Sinais (Psicologia)
6.
Zhonghua Yan Ke Za Zhi ; 58(11): 923-924, 2022 Nov 11.
Artigo em Chinês | MEDLINE | ID: mdl-36348531

RESUMO

A 54-month-old female patient presented to the department of ophthalmology with abnormal head posture and facial asymmetry for two years. The patient's facial development was asymmetrical, with the middle 1/3 of the left side shorter than the right side. The left ear is less malformed than the right. There was no obvious abnormality in corneal light reflex and eye movement. Head tilt test ( -). So, paralysis of the superior oblique muscle was excluded. In consultation with the department of maxillofacial surgery, the patient was confirmed as the first and second branchial arch syndrome and torticollis.


Assuntos
Região Branquial , Síndrome de Goldenhar , Torcicolo , Pré-Escolar , Feminino , Humanos , Assimetria Facial/diagnóstico , Assimetria Facial/etiologia , Síndrome de Goldenhar/complicações , Síndrome de Goldenhar/diagnóstico , Músculos Oculomotores , Postura , Torcicolo/diagnóstico , Região Branquial/anormalidades , Síndrome , Orelha/anormalidades , Face/anormalidades
7.
J Int Adv Otol ; 18(6): 482-487, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36349669

RESUMO

BACKGROUND: This study aimed to examine the plasticity of nerves indirectly by acoustic reflex after surgical repair of unilateral congenital aural atresia. METHODS: This study is a retrospective study including 80 patients who had undergone surgical repairs of congenital aural atresia before 18 years old and for whom acoustic reflex testing was performed postoperatively. Several variables correlated with acoustic reflex were analyzed to find factors affecting the presence of acoustic reflex. RESULTS: Among 80 patients, 44 were positive for acoustic reflex. As a result of multivariate analysis, good postoperative hearing (P = .017), younger age at surgery (P = .028), and the longer time interval between surgery and acoustic reflex test (P = .040) were revealed as factors affecting the acoustic reflex. CONCLUSION: Acoustic reflex was present in 55% of surgically managed patients with congenital aural atresia. The results of this study imply that the reflex arc of acoustic reflex may be restored after proper surgical reconstruction and prolonged use of reconstructed ear in patients with unilateral congenital aural atresia.


Assuntos
Anormalidades Congênitas , Humanos , Adolescente , Estudos Retrospectivos , Reflexo Acústico , Orelha/cirurgia , Orelha/anormalidades , Anormalidades Congênitas/cirurgia
8.
Sensors (Basel) ; 22(22)2022 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-36433582

RESUMO

Biometrics is a critical component of cybersecurity that identifies persons by verifying their behavioral and physical traits. In biometric-based authentication, each individual can be correctly recognized based on their intrinsic behavioral or physical features, such as face, fingerprint, iris, and ears. This work proposes a novel approach for human identification using 3D ear images. Usually, in conventional methods, the probe image is registered with each gallery image using computational heavy registration algorithms, making it practically infeasible due to the time-consuming recognition process. Therefore, this work proposes a recognition pipeline that reduces the one-to-one registration between probe and gallery. First, a deep learning-based algorithm is used for ear detection in 3D side face images. Second, a statistical ear model known as a 3D morphable ear model (3DMEM), was constructed to use as a feature extractor from the detected ear images. Finally, a novel recognition algorithm named you morph once (YMO) is proposed for human recognition that reduces the computational time by eliminating one-to-one registration between probe and gallery, which only calculates the distance between the parameters stored in the gallery and the probe. The experimental results show the significance of the proposed method for a real-time application.


Assuntos
Identificação Biométrica , Biometria , Humanos , Biometria/métodos , Identificação Biométrica/métodos , Orelha , Algoritmos , Imageamento Tridimensional/métodos
9.
Can Fam Physician ; 68(9): 661-663, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-36100383

RESUMO

QUESTION: Ear piercing is one of the most common forms of body modification seen in children and adolescents presenting to my office. Parents of my younger pediatric patients inquire about potential post-piercing complications and risk factors associated with earlobe infections. What guidance should I give them? Also, are there any specific post-piercing complications to consider for older pediatric patients seeking second piercings in the upper cartilage area? ANSWER: Piercing the earlobe or auricular cartilage continues to be a popular procedure among children and adolescents. Despite its widespread practice, improper aseptic piercing technique, insufficient training, and trauma to the soft tissue during high-pressure piercing (eg, use of spring-loaded ear-piercing instruments) can increase one's susceptibility to infections, bleeding, and microfractures. Other post-piercing complications include embedded earrings, keloids, hypertrophic scarring, and cutaneous hypersensitivity. Early recognition and treatment of infections and perichondritis secondary to transcartilaginous piercings can prevent the progression of severe ear deformities requiring reconstructive surgical interventions.


Assuntos
Piercing Corporal , Técnicas Cosméticas , Adolescente , Piercing Corporal/efeitos adversos , Criança , Técnicas Cosméticas/efeitos adversos , Orelha , Humanos
10.
Vestn Otorinolaringol ; 87(4): 32-37, 2022.
Artigo em Russo | MEDLINE | ID: mdl-36107178

RESUMO

OBJECTIVE: To study reflexes coming from the chemoreceptors in the humoral-isolated vertebral artery zone on systemic arterial pressure, cerebral and intra-ear hemodynamics in separate stimulation with angioprotectors. RESULTS: A more pronounced reflex depression of the above-described effectors was caused by Nicergoline, it was less pronounced when using Vinpocetine and Pentoxifylline. Correlation analysis in doing so of the dynamics of arterio-venular coefficient of bulbar conjunctiva vessels and the membrane of the ears labyrinth round window revealed a direct relationship. CONCLUSION: These studies objectivize the therapy of ear labyrinth discirculation with angioprotectives.


Assuntos
Nicergolina , Pentoxifilina , Pressão Arterial , Orelha , Humanos , Pentoxifilina/farmacologia , Artéria Vertebral
11.
Otolaryngol Clin North Am ; 55(5): 1111-1124, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36088165

RESUMO

Promoting childhood and adolescent health and long-term well-being requires an emphasis on preventative care and anticipatory guidance. In this review, the authors will focus on pertinent ear, nose, and throat preventative health in children, providing clinicians with relevant and succinct information to counsel children and their parents on the following essential subjects: foreign body aspiration and ingestion, upper respiratory infection prevention, noise exposure risks, aural hygiene, risks of primary and secondhand smoke exposure, and sleep hygiene.


Assuntos
Poluição por Fumaça de Tabaco , Adolescente , Criança , Aconselhamento , Orelha , Estilo de Vida Saudável , Humanos , Pais , Poluição por Fumaça de Tabaco/efeitos adversos , Poluição por Fumaça de Tabaco/prevenção & controle
13.
J Acoust Soc Am ; 152(2): 1230, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-36050186

RESUMO

Bilateral cochlear-implant (BICI) listeners obtain less spatial release from masking (SRM; speech-recognition improvement for spatially separated vs co-located conditions) than normal-hearing (NH) listeners, especially for symmetrically placed maskers that produce similar long-term target-to-masker ratios at the two ears. Two experiments examined possible causes of this deficit, including limited better-ear glimpsing (using speech information from the more advantageous ear in each time-frequency unit), limited binaural unmasking (using interaural differences to improve signal-in-noise detection), or limited spectral resolution. Listeners had NH (presented with unprocessed or vocoded stimuli) or BICIs. Experiment 1 compared natural symmetric maskers, idealized monaural better-ear masker (IMBM) stimuli that automatically performed better-ear glimpsing, and hybrid stimuli that added worse-ear information, potentially restoring binaural cues. BICI and NH-vocoded SRM was comparable to NH-unprocessed SRM for idealized stimuli but was 14%-22% lower for symmetric stimuli, suggesting limited better-ear glimpsing ability. Hybrid stimuli improved SRM for NH-unprocessed listeners but degraded SRM for BICI and NH-vocoded listeners, suggesting they experienced across-ear interference instead of binaural unmasking. In experiment 2, increasing the number of vocoder channels did not change NH-vocoded SRM. BICI SRM deficits likely reflect a combination of across-ear interference, limited better-ear glimpsing, and poorer binaural unmasking that stems from cochlear-implant-processing limitations other than reduced spectral resolution.


Assuntos
Implante Coclear , Implantes Cocleares , Percepção da Fala , Orelha , Ruído/efeitos adversos , Mascaramento Perceptivo
14.
J Therm Biol ; 108: 103281, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-36031209

RESUMO

In clinical practice, an important aspect of animal health status evaluation is the body temperature recording obtained using different methods. Within them, the non-contact and non-invasive infrared thermometer can provide an accurate estimation of body temperature improving the quality of care and medical decision. To evaluate the use of the monitoring of auricular temperature to improve the quality of care and medical decision. To evaluate the use of the monitoring of auricular temperature as indices of body temperature, as well as rectal temperature in eleven clinically healthy mixed bred cats, eleven Rottweiler dogs, and eleven Italian saddle horses temperature values were obtained by means of an infrared thermometer in the left and right ears and by means of a digital thermometer in the rectum. Two-way analysis of variance (ANOVA) indicated a statistically higher rectal temperature value than the temperature recorded in the left and right ears (P<0.001). In all species, no differences between the right and left ear were recorded (p>0.05). Cats and dogs showed a statistically higher auricular (p<0.001) and rectal (p<0.01) temperature compared to horses. No differences were observed between cats and dogs (p>0.05). Auricular and rectal temperature agreement was shown by the Bland-Altman test. Between the two methods, the average difference was 1.6 °C for cats, 1.4 °C for dogs, and 3.3 °C for horses. In dogs, rectal and auricular temperature showed a positive correlation (r2=0.78). In conclusion, only in healthy dogs maintained in controlled conditions the monitoring of auricular temperature reflects the clinical practice gold standard of core body temperature measurement represented by rectal temperature. The lower value of about 1.5 °C must be taken into consideration when this technique is used.


Assuntos
Temperatura Corporal , Termômetros , Animais , Gatos , Cães , Orelha , Nível de Saúde , Cavalos , Reto , Temperatura
15.
PLoS One ; 17(8): e0262788, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35969602

RESUMO

Spider morph ball pythons are a frequently-bred designer morph with striking alterations of the skin color pattern. We created high-resolution µCT-image series through the otic region of the skulls, used 3D-reconstruction software for rendering anatomical models, and compared the anatomy of the semicircular ducts, sacculus and ampullae of wildtype Python regius (ball python) with spider morph snakes. All spider morph snakes showed the wobble condition (i.e., twisting movements of the head, impaired locomotion, difficulty striking or constricting prey items). We describe the inner ear structures in wildtype and spider morph snakes and report a deviant morphology of semicircular canals, ampullae and sacculus in the latter. We also report about associated differences in the desmal skull bones of spider morph snakes, which were characterized by wider semicircular canals, ampullae widened and difficult to discern in µCT, a deformed crus communis, and a small sacculus with a highly deviant X-ray morphology as compared to wildtype individuals. We observed considerable intra- and interindividual variability of these features. This deviant morphology in spider morph snakes could easily be associated with an impairment of sense of equilibrium and the observed neurological wobble condition. Limitations in sample size prevent statistical analyses, but the anatomical evidence is strong enough to support an association between the wobble condition and a malformation of the inner ear structures. A link between artificially selected alterations in pattern and specific color design with neural-crest associated developmental malformations of the statoacoustic organ as known from other vertebrates is discussed.


Assuntos
Boidae , Aranhas , Animais , Boidae/anatomia & histologia , Orelha , Canais Semicirculares , Crânio/anatomia & histologia
17.
Am J Audiol ; 31(4): 1088-1097, 2022 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-36037483

RESUMO

PURPOSE: The real-ear-to-coupler difference (RECD) is a recommended measure for accurate hearing aid fittings, especially for pediatric populations. However, for adults, many clinicians question whether it is necessary. METHOD: Hearing aids were fit on two groups of 85 older adults seen at a Veterans Administration audiology clinic. One group was fit using RECD measurements, whereas the second group was fit with population-based average RECD values. The two groups had similar pure-tone hearing thresholds. RESULTS: Like previous studies, there was little difference between the measured RECD for the right and left ears among the participants. Although the majority of the measured RECDs were within 1 SD of the mean, approximately 20% of those measured were outside of the normal range. It also was found that all participants produced lower (improved) Hearing Handicap Inventory for Elderly-Screening (HHIE-S) scores from pre- to postfitting, thus suggesting a reduction in self-perceived hearing handicap. CONCLUSIONS: Despite having similar prefitting HHIE-S scores, those participants who had their hearing aids fit using measured RECD values had lower postfitting scores than the group that was fit with average RECD values. Furthermore, there was a significant difference between the groups on several questions of the International Outcome Inventory-Hearing Aids, suggesting that there was higher satisfaction with the fittings based on the custom RECD rather than the fittings based on the average RECD. This study demonstrated that, in addition to performing verification using real-ear measurements, accurate conversion of dB HL to dB SPL using personalized RECD likely improved hearing aid satisfaction.


Assuntos
Auxiliares de Audição , Criança , Humanos , Idoso , Orelha , Audição , Testes Auditivos , Valores de Referência
18.
Medicine (Baltimore) ; 101(26): e29819, 2022 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-35777013

RESUMO

This study aimed to determine the effects of the binaural beat (BB) on brainwave induction using an inaudible baseline frequency outside the audible frequency range. Experiments were conducted on 18 subjects (11 males [mean age: 25.7 ± 1.6 years] and 7 females [mean age: 24.0 ± 0.6 years]). A BB stimulation of 10 Hz was exerted by presenting frequencies of 18,000 Hz and 18,010 Hz to the left and right ears, respectively. A power spectrum analysis was performed to estimate the mean of the absolute power of the alpha frequency range (8-13 Hz). The variation in the mean alpha power during the rest and stimulation phases in each brain area was compared using the Wilcoxon signed-rank test. Compared to the rest phase, the stimulation phase with BB showed an increasing trend in the mean alpha power across all 5 brain areas. Notably, a significant increase was found in the frontal, central, and temporal areas. This is a significant study in that it determines the effects of only BB without the influence of auditory perception, which has been overlooked in previous studies.


Assuntos
Ondas Encefálicas , Estimulação Acústica , Adulto , Percepção Auditiva/fisiologia , Encéfalo/fisiologia , Ondas Encefálicas/fisiologia , Orelha , Feminino , Humanos , Masculino , Adulto Jovem
19.
Codas ; 34(6): e20210219, 2022.
Artigo em Português, Inglês | MEDLINE | ID: mdl-35894308

RESUMO

PURPOSE: to investigate the test-retest reliability of the AudBility program in typically developing children aged six-seven years. METHODS: 29 children, male and female, right-handed, native Portuguese speakers and adequate school performance for the age group studied, underwent previous meatoscopy, immittance measurements and the AudBility program was applied, composed of a self-perception questionnaire and auditory tasks, being analyzed the abilities of sound localization, auditory closure, figure-ground, dichotic digits test, temporal resolution, and temporal ordering of frequency and duration. The program was designed and reapplied with an interval of one week under the same conditions. The performance in each task was presented from central tendency and dispersion data and was conducted using the Intraclass Correlation Coefficient (ICC), based on the 95% confidence interval (CI). RESULTS: The analyses showed a positive and significant ICC (p<0.01) for the questionnaire and auditory tasks, except for auditory closure, in the right and left ears and figure-ground in the left ear. The questionnaire mean ICC was 0.742 and ranged from -0.012 to 0.698 for the auditory tasks. CONCLUSION: Based on mean results and upper limit of the CI, the findings showed agreement between moments, classified as good for the questionnaire and moderate to good for five of the seven auditory analyzed tasks (ICC>0.05 and <0.9). The results of the reliability study represent an important parameter for validating the program for the studied age group.


OBJETIVO: investigar a confiabilidade teste-reteste do programa AudBility em crianças com desenvolvimento típico de seis a sete anos. MÉTODO: 29 crianças, sexo masculino e feminino, destros, falantes nativos do Português e desempenho escolar adequado para a faixa etária estudada de acordo com o professor foram submetidas aos procedimentos de meatoscopia, imitanciometria e foi aplicado o programa AudBility, composto por questionário de autopercepção e tarefas auditivas. As tarefas incluíram localização sonora, fechamento auditivo, figura fundo, escuta dicótica, resolução temporal e ordenação temporal de frequência e duração. O programa foi reaplicado com um intervalo de 1 semana sob as mesmas condições de avaliação. O desempenho em cada tarefa foi apresentado a partir de dados de tendência central e dispersão e a confiabilidade a partir do Cálculo do Coeficiente intra-classe (CCI), com base no intervalo de confiança (IC) de 95%. RESULTADOS: As análises demonstraram CCI positivo e significante para o questionário e tarefas auditivas, exceto fechamento auditivo, nas orelhas direita e esquerda e figura-fundo na orelha esquerda. O CCI médio do questionário foi de 0,742 e variou de -0,012 a 0,698 para as tarefas auditivas. CONCLUSÃO: Com base no resultado médio e no limite superior do IC, os achados demonstraram concordância entre os momentos de grau bom para o questionário, e de grau bom a moderado para cinco das sete variáveis auditivas analisadas (CCI>0,05 e < 0,9). Os achados do estudo de confiabilidade representam um parâmetro importante de validação do programa para a faixa etária estudada.


Assuntos
Testes com Listas de Dissílabos , Orelha , Criança , Face , Feminino , Humanos , Masculino , Reprodutibilidade dos Testes
20.
Otol Neurotol ; 43(7): 808-813, 2022 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-35878637

RESUMO

OBJECTIVE: We aimed to identify the sound pressure distribution along the external auditory canal after radical mastoidectomy with meatoplasty by combining real ear measurements and measurements obtained using a finite-element model. STUDY DESIGN: Case series with chart review. SETTING: Tertiary care university hospital. PATIENTS: We evaluated 16 patients who had undergone radical mastoidectomy with meatoplasty in one ear and had intact nonoperated contralateral ears, which served as the control group. INTERVENTION DIAGNOSTIC: Real ear measurements testing at specific frequencies were performed postoperatively. MAIN OUTCOME MEASURE: Sound pressure gains were measured at five different depths along the external auditory canal, and a validated finite-element model was used to simulate the sound pressure distributions along the external auditory canals of the operated and nonoperated ears. RESULTS: The average peak resonant frequency near the tympanic membrane in operated ears was significantly lesser than that in nonoperated ears (2434.4 ± 616.4 versus 2935.9 ± 602.2 Hz; Wilcoxon signed-rank test, p < 0.05). The average peak resonant amplitude near the tympanic membrane showed no significant intergroup difference (paired-sample t test, p > 0.05). The peak resonant frequencies at different depths of the external auditory canal varied in the nonoperated ears (Kruskal-Wallis rank-sum test, 2880.9 ± 581.7 Hz, p = 0.02) but did not differ significantly in the operated ears (Kruskal-Wallis rank-sum test, 2464.4 ± 670.3 Hz, p = 0.75). In the finite-element model, the peak resonant frequencies along the depth of the external auditory canal varied in the normal ear and were homogeneous in the operated ear. CONCLUSION: Radical mastoidectomy with meatoplasty altered the sound distribution in the external auditory canal. Our finite-element model successfully simulated the postoperative sound distribution in the external auditory canal and will facilitate development of wearable equipment for these patients.


Assuntos
Processo Mastoide , Mastoidectomia , Orelha , Meato Acústico Externo/cirurgia , Humanos , Processo Mastoide/cirurgia , Som
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