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1.
Iran J Otorhinolaryngol ; 36(3): 475-482, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38745683

RESUMO

Introduction: COVID-19 infection was accompanied by otologic symptoms, a pattern that was captured early by Google Trends. The objective of this study is to investigate searches for otologic symptoms and identify correlations with the pandemic onset. Materials and Methods: Search interest for otologic symptoms was gathered using Google Trends from two years before and two years following the pandemic start date. A two-tailed Mann-Whitney U test was used to identify significant changes and effect size. Results: In total, search interest for 14 terms was collected, with significant changes identified in 11. Six terms showed increased search interest, with the most significant rises observed for headache (r=0.589, p<0.001), dizziness (r=0.554, p<0.001), and tinnitus (r=0.410, p<0.001). Search interest decreased for five terms, with the most notable declines found in searches for migraine headache (r=0.35, p<0.001) and phonophobia (r=0.22, p=0.002). No significant changes were seen in ear pressure (p=0.142), neck pain (p=0.935), and sudden hearing loss (p=0.863) searches. Conclusion: COVID-19 infection is often accompanied otologic symptoms and holds a diagnostic role. Fluctuating search interest may be attributed to a true increase in cases, media trends, or people's desires to stay informed. Google Trends robustly captured trends in search interest and presented itself as a valuable epidemiological tool.

2.
HNO ; 2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38695897

RESUMO

OBJECTIVE: Education in microsurgery of the ear includes staged training to allow for mastering of the complex microsurgical procedures, particularly in the context of middle ear reconstruction and cochlear implantation. Traditional surgical training includes temporal bone preparations by cadaver dissection and supervised operating room practice. As these on-site trainings are limited, there is a need to broaden education facilities in an on-line format. Therefore, a first basic on-line training for otosurgery was developed. MATERIALS AND METHODS: The system consists of an artificial temporal bone model together with a set of basic surgical instruments and implant dummies. As an essential part of the training kit, a high-resolution camera set is included that allows for connection to a video streaming platform and enables remote supervision of the trainees' surgical steps by experienced otological surgeons. In addition, a pre-learning platform covering temporal bone anatomy and instrumentation and pre-recorded lectures and instructional videos has been developed to allow trainees to review and reinforce their understanding before hands-on practice. RESULTS: Over the three courses held to date, 28 participants with varying levels of prior surgical experience took part in this otological surgical training program. The immediate feedback of the participants was evaluated by means of a questionnaire. On this basis, the high value of the program became apparent and specific areas could by identified where further refinements could lead to an even more robust training experience. CONCLUSION: The presented program of an otosurgical online training allows for basal education in practical exercises on a remote system. In this way, trainees who have no direct access to on-site instruction facilities in ear surgery now have the chance to start their otosurgical training in an educational setting adapted to modern technologies.

3.
HNO ; 72(5): 317-324, 2024 May.
Artigo em Alemão | MEDLINE | ID: mdl-38530381

RESUMO

OBJECTIVE: Education in microsurgery of the ear includes staged training to allow for mastering of the complex microsurgical procedures, particularly in the context of middle ear reconstruction and cochlear implantation. Traditional surgical training includes temporal bone preparations by cadaver dissection and supervised operating room practice. As these on-site trainings are limited, there is a need to broaden education facilities in an on-line format. Therefore, a first basic on-line training for otosurgery was developed. MATERIALS AND METHODS: The system consists of an artificial temporal bone model together with a set of basic surgical instruments and implant dummies. As an essential part of the training kit, a high-resolution camera set is included that allows for connection to a video streaming platform and enables remote supervision of the trainees' surgical steps by experienced otological surgeons. In addition, a pre-learning platform covering temporal bone anatomy and instrumentation and pre-recorded lectures and instructional videos has been developed to allow trainees to review and reinforce their understanding before hands-on practice. RESULTS: Over the three courses held to date, 28 participants with varying levels of prior surgical experience took part in this otological surgical training program. The immediate feedback of the participants was evaluated by means of a questionnaire. On this basis, the high value of the program became apparent and specific areas could by identified where further refinements could lead to an even more robust training experience. CONCLUSION: The presented program of an otosurgical online training allows for basal education in practical exercises on a remote system. In this way, trainees who have no direct access to on-site instruction facilities in ear surgery now have the chance to start their otosurgical training in an educational setting adapted to modern technologies.


Assuntos
Instrução por Computador , Currículo , Alemanha , Humanos , Instrução por Computador/métodos , Instrução por Computador/instrumentação , Otolaringologia/educação , Implante Coclear/educação , Implante Coclear/métodos , Implante Coclear/instrumentação , Procedimentos Cirúrgicos Otológicos/educação , Educação a Distância/métodos , Microcirurgia/educação , Avaliação Educacional
4.
Laryngoscope ; 2024 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-38506422

RESUMO

Here we present the first case of sebaceous carcinoma of the middle ear. We discuss the treatment course and post treatment results after 11 years of follow up. We further summarize the available literature of sebaceous carcinoma of the temporal bone, which prior to this case was exclusively limited to the external auditory canal. Laryngoscope, 2024.

5.
Int J Pediatr Otorhinolaryngol ; 179: 111932, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38537448

RESUMO

OBJECTIVE: Assess the feasibility of cochlear implantation as day-surgery in children and identify variables influencing admission, readmission, and unplanned postoperative consultation. METHODS: This retrospective observational monocentric study was conducted according to the STROBE recommendations. Between January 2017 and July 2022, all medical records of children who underwent cochlear implantation were analyzed. Eligible children were admitted for the first time to the pediatric day-surgery unit. Exclusion criteria were children planned for inpatient procedure, bilateralization or explantation-reimplantation. Sex assigned at birth, analgesic medication, anesthesia and complications were related to categorical variables. Age, duration of anesthesia, length of stay and ASA score were related to continuous variables. RESULTS: We included 66 children from a total of 106. Mean age was 53 months [SD: 46 months, range 8-184 months]. Successful day-surgery management was observed in 86% of cases. In 14% of cases, children were admitted to the pediatric ENT unit for the following reasons: late awakening in 6%, non-controlled pain in 4.5%, postoperative nausea and vomiting in 3.5% of cases. Univariate analysis did not observe any factor promoting success of day-surgery regarding anesthetic agents. Age was not statistically significant as a factor of ambulatory failure. Time spent in the operating room was not a determining factor (p = 0.559). None of the children were rehospitalized. Early unplanned consultations were observed in 3% of cases for vertex edema in 1 case and uncomplicated otorrhea in 1 case. CONCLUSION: This study adds to the knowledge on pediatric cochlear implantation and suggests that this procedure is suitable for day-surgery at any age.


Assuntos
Implante Coclear , Implantes Cocleares , Otolaringologia , Recém-Nascido , Criança , Humanos , Implante Coclear/efeitos adversos , Implante Coclear/métodos , Estudos Retrospectivos , Implantes Cocleares/efeitos adversos , Náusea e Vômito Pós-Operatórios
6.
HNO ; 2024 Mar 01.
Artigo em Alemão | MEDLINE | ID: mdl-38429542

RESUMO

BACKGROUND: An increasing number of pediatric patients with mastoiditis and a consequent increase in mastoidectomy rates was noted in 2022 and 2023. OBJECTIVE: This study aimed to analyze the increase in the number of children presenting with mastoiditis and subsequent mastoidectomy, to assess correlations with prior antibiotic treatment or COVID-19 infection, and to provide an overview of involved pathogens, treatment, and disease course. MATERIALS AND METHODS: A retrospective analysis of all patients with mastoidectomy since 2012 was conducted. Data collected comprised type and duration symptoms, prior antibiotic therapy, diagnostic tests and disease course, causal pathogens, length of hospitalization, and complications. RESULTS: A highly significant increase in mastoidectomies in children could be demonstrated from 2022. Neither the pathogens involved nor the course of disease or complications showed differences. An increase in the number of patients with prior outpatient antibiotic therapy could be shown. About a half of the patients becoming ill after fall 2022 had a positive history of COVID. Hyperplasia of adenoid tissue was a far less frequent causal mechanism than in the years before COVID. CONCLUSION: No clear correlation with reduced outpatient antibiotic therapy could be found. Whether there exists an association with prior COVID infection cannot be judged at this time, due to the high number of asymptomatic and therefore unknown COVID infections.

7.
Artigo em Inglês | MEDLINE | ID: mdl-38385794

RESUMO

OBJECTIVE: To investigate the relationship between ergonomic positions and electromyographic muscle activity during otologic drilling. STUDY DESIGN: Cross-over experimental trial. SETTING: Tertiary Academic Medical Center. METHODS: Surgeon participants were tasked with delicate eggshell drilling in 3 different seated positions: "neutral," "slouched," and "craned." Surface electromyography (sEMG) sensors recorded the amplitude and frequency of muscle activity. The joint analysis of spectrum and amplitude (JASA) method, which combines temporal trends in frequency and amplitude, was used to identify trials that exhibited patterns of fatigue. RESULTS: The sEMG amplitude and frequency responses demonstrated wide temporal changes. In a majority of experiments, amplitude increased over the course of the experiment, while frequency remained more stable. On analysis of variance testing, only the mean frequency of the deltoid differed significantly between postures (P = .02). Under the JASA framework, external carpi radialis and upper trapezius experienced fatigue in nearly half of the trials regardless of position (47% vs 49%). The upper trapezius demonstrated fatigue during 46% and 69% of the "craned" and "slouched" trials, respectively, compared to just 31% of the "neutral" trials. Fewer attendings demonstrated upper trapezius fatigue compared to trainees (33% vs 62%). Female surgeons experienced fatigue in more trials than male counterparts (73% vs 25%). CONCLUSION: This study highlights a first step in quantifying the relationship between operating postures and muscle fatigue. Results suggest that specific muscle groups are more susceptible to fatigue; gender and experience may also impact muscle activity.

8.
J Laryngol Otol ; : 1-3, 2024 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-38221853

RESUMO

BACKGROUND: The herniation of temporomandibular tissue through the foramen of Huschke into the external auditory canal is a rare clinical anomaly. This paper describes one such case and provides an overview of the relevant literature. This paper elaborates upon the aetiology, clinical assessment, management and associated complications. CASE REPORT: A 54-year-old woman presented with a 3-month history of right ear pain and a polypoid lesion in her right ear canal. This lesion expanded during a Valsalva manoeuvre, and imaging demonstrated a defect in the antero-superior aspect of the canal with herniation of soft tissue. The patient was managed conservatively as the symptoms resided. CONCLUSION: Ear canal lesions that protrude or change in size with a Valsalva manoeuvre could be due to a persistent foramen of Huschke. In symptomatic cases needing surgical intervention, a variety of materials may be used to close the defect. Titanium mesh, with or without cartilage overlay, appears to be the most popular choice.

10.
Lancet Reg Health Am ; 29: 100659, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38269207

RESUMO

Background: Tinnitus is a potentially disabling condition with few treatments. We examined the prevalence and characteristics of tinnitus among demographic groups in the United States (US) and assessed associated factors and tinnitus-related healthcare. Methods: We included adults with and without bothersome tinnitus from the nationally representative 2014 National Health Interview Survey (NHIS; raw n = 36,697), the latest year with tinnitus data. We evaluated tinnitus prevalence and characteristics (frequency, severity, duration) overall and among groups defined by sex and race/ethnicity. Logistic regression with adjusted Wald tests were used for comparisons in NHIS-weighted populations by sex and race/ethnicity, and to evaluate associations between demographic/medical characteristics and noise exposure on tinnitus risk. Findings: The US prevalence of tinnitus was 11.2% (95% CI: 10.8%, 11.7%; ∼27 million people) in 2014. Of those with tinnitus, 41.2% always had symptoms and 28.3% had ≥15 years symptom duration; the rates were significantly higher among men vs. women and non-Hispanic (nHW) vs. Hispanic Whites (HW), Blacks, or other ethnicity. Significantly more women vs. men and HW vs. nHW reported severe tinnitus. Sex and race/ethnicity, except Asian, were not significantly associated with tinnitus when age, otologic/medical disorders, and noise exposure were included in the model. Significantly lower rates of all minority groups discussed tinnitus with a doctor compared to nHW, and among those who did, Blacks were significantly less likely to receive tinnitus evaluation than nHWs. Interpretation: Tinnitus prevalence varies across US demographic groups and racial differences were identified in the delivery of tinnitus-related healthcare. Funding: Rich Robbins, Bertarelli Foundation Endowed Professorship.

11.
HNO ; 72(3): 192-198, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38289500

RESUMO

BACKGROUND: In 1873, Hermann Schwartze and Adolf Eysell described a new surgical technique for treating mastoid disease using a mallet, chisels, and gouges of various sizes instead of trephines or drill instruments also called "modern mastoidectomy." On the 150th jubilee of this landmark article, we pay tribute by studying the reception and implementation of mastoidectomy in the 2 years following its publication. METHODS: The commentaries published in the otological and medical literature between the second part of 1873 to the end of 1875 were studied with an emphasis on the three specialized otological journals and the otological textbooks that existed during this period. RESULTS AND CONCLUSION: The princeps paper Ueber die künstliche Eröffnung des Warzenfortsatzes ("On the artificial opening of the mastoid process") by Hermann Schwartze and Adolf Eysell published in 1873 was rapidly disseminated in the medical literature for nearly 1 year, and then entered a phase of evaluation followed by a phase of extension and implementation, before finding its definitive place in the history of mastoid process surgery.


Assuntos
Otopatias , Mastoidectomia , Humanos , Processo Mastoide/cirurgia , Instrumentos Cirúrgicos
12.
J Laryngol Otol ; 138(3): 258-264, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37203445

RESUMO

OBJECTIVE: To investigate the effect of body mass index on hearing outcomes, operative time and complication rates following stapes surgery. METHOD: This is a five-year retrospective review of 402 charts from a single tertiary otology referral centre from 2015 to 2020. RESULTS: When the patient's shoulder was adjacent to the surgeon's dominant hand, the average operative time of 40 minutes increased to 70 minutes because of a significant positive association between higher body mass index and longer operative times (normal body mass index group (<25 kg/m2) r = 0.273, p = 0.032; overweight body mass index group (25-30 kg/m2) r = 0.265, p = 0.019). Operative times were not significantly longer upon comparison of low and high body mass index groups without stratification by laterality (54.9 ± 19.6 minutes vs 57.8 ± 19.2 minutes, p = 0.127). CONCLUSION: There is a clinically significant relationship between body mass index and operating times. This may be due to access limitations imposed by shoulder size.


Assuntos
Otosclerose , Cirurgia do Estribo , Humanos , Ombro , Otosclerose/cirurgia , Audição , Testes Auditivos , Estudos Retrospectivos , Resultado do Tratamento , Estribo
13.
Am J Otolaryngol ; 45(1): 104049, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37738880

RESUMO

OBJECTIVE: Noise-induced hearing loss in the non-surgical ear during otologic/neurotologic surgery has not been well studied. The purpose of this study was to evaluate changes in hearing that may occur in the contralateral (i.e., non-surgical) ear after various otologic/neurotologic surgeries due to noise generated by drills. We hypothesized that otologic/neurotologic surgeries, longer in duration, would suggest longer drilling times and result in decreased hearing in the contralateral ear as evidenced by a change post-operative pure tone air conduction thresholds when compared to pre-operative thresholds. METHODS: A retrospective chart review at a tertiary referral center. Adult patients (18-75 years old) who underwent otologic/neurotologic surgeries from May 1, 2016 through May 1, 2021 were considered for inclusion. Surgeries included vestibular schwannoma resection (translabyrinthine, middle cranial fossa, or retrosigmoid approaches), endolymphatic sac/shunt and labyrinthectomy for Meniere's disease, and tympanomastoid surgery for middle ear pathology (e.g., cholesteatoma). Patient characteristics obtained through record review included age, sex, surgical procedure, pre-operative and post-operative audiometric thresholds and word recognition scores (WRS) for the contralateral ear, and duration of surgery. RESULTS: No significant differences were observed for change in audiometric thresholds in the contralateral ear for any surgery when considering individual frequencies. Additionally, no significant change in WRS was observed for any surgical approach. CONCLUSIONS: The risk of hearing loss in the non-surgical ear during various otologic/neurotologic surgeries appears to be minimal when measured via routine clinical tests.


Assuntos
Orelha Interna , Perda Auditiva Provocada por Ruído , Doença de Meniere , Adulto , Humanos , Adolescente , Adulto Jovem , Pessoa de Meia-Idade , Idoso , Perda Auditiva Provocada por Ruído/etiologia , Estudos Retrospectivos , Audiometria de Tons Puros , Orelha Interna/cirurgia
14.
Front Neurol ; 14: 1268785, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38020592

RESUMO

Objective: This systematic review aims to describe the impact of otologic surgery as a treatment for chronic otitis media (COM) on the Health-Related Quality of Life (HRQoL) of adult patients. Methods: A literature search was performed in PubMed, Scopus, Embase, and Web of Science until May 2023. Prospective studies including adult patients with COM (cholesteatoma) who underwent canal wall up mastoidectomy, canal wall down mastoidectomy, or tympanoplasty without mastoidectomy, with pre- and postoperative HRQoL measurements, were considered eligible. Questionnaire validation studies were excluded. The risk of bias and study quality were evaluated with a Quality Assessment Tool (for before-after studies with no control group). To assess the change in HRQoL, pre- and postoperative HRQoL values and absolute changes were extracted, synthesized, and presented in tables. Standardized mean differences (SMD) were calculated to enhance comparisons. Results: Of the 720 studies identified, 16 met the inclusion criteria of this review. Different questionnaires were used throughout the studies. The CES and COMOT-15 were used in five studies and the ZCMEI-21 and COMQ-12 in three studies. All studies indicated statistically significant improvement in HRQoL from pre- to postoperative, measured with disease-specific HRQoL questionnaires. General HRQoL questionnaires did not show significant improvement. Calculated SMDs ranged from 0.24 to 6.99. Discussion and conclusion: Included studies had low (n = 10) to high (n = 6) risk of bias and poor (n = 4), fair (n = 7) or good (n = 5) study quality. Surgical treatment positively impacts the HRQoL of adult COM patients with and without cholesteatoma. However, the clinical relevance of the reported changes is unknown due to the lack of minimal clinically important differences (MCID) or cut-off values in each questionnaire. Therefore, further research regarding the MCIDs of each questionnaire is needed. Future research should also report preoperative chief symptoms and indications for surgery to improve individual patient counseling.

15.
BMC Oral Health ; 23(1): 913, 2023 11 23.
Artigo em Inglês | MEDLINE | ID: mdl-37996839

RESUMO

Symptoms of temporomandibular disorders (TMD) could be present as otologic symptoms like earache and dizziness in some patients. In most cases, these symptoms are not recognized because otolaryngologists fail to diagnose TMD as a source of the problem. This investigation was conducted to evaluate the effect of TMD treatments on the otologic symptoms which after taking history and clinical examinations seemed to be related to TMD. In the present study, the patients who were complaining of otalgia, ear fullness, tinnitus, hearing loss, and dizziness were evaluated by an ear fellow. Forty patients who had no known otologic or other primary causes to explain their symptoms, were referred to the orofacial pain clinic with the possible diagnosis of TMD. If the diagnosis was confirmed by an orofacial pain specialist, a combination of TMD treatments was administered to each case and the patients were followed up. The results showed that following implementation of treatment protocols for TMD, more than 50% of the patients reported complete or partial recovery in the second follow-up (p < 0.05). The most common otologic symptom of the referred cases was earache, and the most common associated complaint was neck pain. All the patients had one or more parafunctional habits. This study showed that TMD treatments were significantly efficient in improving otologic symptoms partially or completely and the authors concluded that for the patients with otolaryngologic unexplained symptoms, an overhaul examination is needed to assess TMD as a possible cause of the patient complaint. It is recommended that in cases with unexplained otologic symptoms, otolaryngologists care more about the neck trigger points (TP) and ask about the patient's parafunctional habits. Otolaryngologists and dentists need to be aware of the risk of developing otologic symptoms caused by these habits or cervical TPs.


Assuntos
Otopatias , Transtornos da Articulação Temporomandibular , Zumbido , Humanos , Otopatias/diagnóstico , Otopatias/etiologia , Otopatias/terapia , Dor de Orelha/etiologia , Dor de Orelha/terapia , Tontura/complicações , Zumbido/complicações , Vertigem/complicações , Transtornos da Articulação Temporomandibular/terapia , Transtornos da Articulação Temporomandibular/complicações , Dor Facial/etiologia , Dor Facial/terapia
16.
Int. arch. otorhinolaryngol. (Impr.) ; 27(3): 528-535, Jul.-Sept. 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1514253

RESUMO

Abstract Introduction Tympanoplasty is a reparative surgery that has multiple indications. The aid of a microscope or an endoscope is necessary to carry out the procedure. The classic method utilizes the microscope; however, in the recent decades, the endoscope has been popular. Although many articles try to compare these two techniques, there is still no robust evidence that confirms the superiority of either technique. In the present work, we seek to perform a systematic review contribute with this discussion. Objectives The present systematic review attempted to compare endoscopic and microscopic surgery techniques and to discover whether there would be superiority in the results of any of them, based on data currently available in the literature. Data Synthesis The objectives of the present review were organized according to the PICO planning and strategy adapted for systematic reviews. The inclusion and exclusion criteria were established aiming to select only select primary data. The main medical databases were searched usingan optimized search string with appropriate descriptors. The searched databases were MEDLINE, LILACS, SciELO, and EMBASE. A total of 99 studies were selected and 38 were fully assessed after the inclusion criteria were applied. All included articles were reviewed by all authors and their results were discussed and summarized. Conclusion The endoscopic technique was shown to be a safer technique comparable in effectiveness to the use of microscopy. In addition, it provides possible advantages such as shortening the surgical time and better postoperative pain outcomes.

17.
Int Arch Otorhinolaryngol ; 27(3): e528-e535, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37564466

RESUMO

Introduction Tympanoplasty is a reparative surgery that has multiple indications. The aid of a microscope or an endoscope is necessary to carry out the procedure. The classic method utilizes the microscope; however, in the recent decades, the endoscope has been popular. Although many articles try to compare these two techniques, there is still no robust evidence that confirms the superiority of either technique. In the present work, we seek to perform a systematic review contribute with this. Objectives The present systematic review attempted to compare endoscopic and microscopic surgery techniques and to discover whether there would be superiority in the results of any of them, based on data currently available in the literature. Data Synthesis The objectives of the present review were organized according to the PICO planning and strategy adapted for systematic reviews. The inclusion and exclusion criteria were established aiming to select only select primary data. The main medical databases were searched using an optimized search string with appropriate descriptors. The searched databases were MEDLINE, LILACS, SciELO, and EMBASE. A total of 99 studies were selected and 38 were fully assessed after the inclusion criteria were applied. All included articles were reviewed by all authors and their results were discussed and summarized. Conclusion The endoscopic technique was shown to be a safer technique comparable in effectiveness to the use of microscopy. In addition, it provides possible advantages such as shortening the surgical time and better postoperative pain outcomes.

18.
Otolaryngol Clin North Am ; 56(5): xix-xx, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37550108

RESUMO

This article provides a historical overview of disorders of the external ear, focusing on advances in technology, pharmacology, and education that have been beneficial. While the diagnosis and treatment of various conditions involving the external ear canal and auricle continue to evolve, it remains to be seen how the latest challenges will be met.


Assuntos
Meato Acústico Externo , Otopatias , Humanos , Meato Acústico Externo/patologia
19.
Turk Arch Otorhinolaryngol ; 61(1): 1-7, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37583974

RESUMO

Objective: This study aimed to evaluate the outcomes of total transcanal endoscopic cholesteatoma surgery. Methods: Twenty-seven cholesteatoma patients that had undergone transcanal endoscopic ear surgery (TEES) were included in the study. Age, sex, operation date of patients, operated side, need for ossiculoplasty, graft material, and surgical technique were recorded. All patients were evaluated through otoscopic, endoscopic, and audiological examinations and followed up for at least five months after surgery. All patients were staged using the European Academy of Otology and Neurotology/Japan Otological Society (EAONO/JOS) Staging System on Middle Ear Cholesteatoma. Results: Mean age of the patients was 36.4 years (range, 4-67 years). According to the EAONO/JOS Staging System, 11 patients were stage 1, while 11 were stage 2, and five were stage 3. Two had lateral semicircular canal defect, one had facial canal dehiscence, and one had oval window defect. The average follow-up period was 19 months (range, 5-41 months), during which two patients experienced retraction pocket and hearing loss and one patient had perforation. One patient underwent revision surgery during follow-up and no recurrence or residual cholesteatoma was observed. The preoperative and postoperative air-bone gaps were 25.14±13.93 dB and 22.22±12.64 dB with no significant difference. Conclusion: TEES is a minimally invasive and safe procedure with low complication and recurrence rates. As with all surgical procedures, experience is essential, and as experience increases, the capability to perform endoscopic otologic surgery on more complex cases may become possible.

20.
Int J Comput Assist Radiol Surg ; 18(11): 2033-2041, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37450175

RESUMO

PURPOSE: Middle and inner ear procedures target hearing loss, infections, and tumors of the temporal bone and lateral skull base. Despite the advances in surgical techniques, these procedures remain challenging due to limited haptic and visual feedback. Augmented reality (AR) may improve operative safety by allowing the 3D visualization of anatomical structures from preoperative computed tomography (CT) scans on real intraoperative microscope video feed. The purpose of this work was to develop a real-time CT-augmented stereo microscope system using camera calibration and electromagnetic (EM) tracking. METHODS: A 3D printed and electromagnetically tracked calibration board was used to compute the intrinsic and extrinsic parameters of the surgical stereo microscope. These parameters were used to establish a transformation between the EM tracker coordinate system and the stereo microscope image space such that any tracked 3D point can be projected onto the left and right images of the microscope video stream. This allowed the augmentation of the microscope feed of a 3D printed temporal bone with its corresponding CT-derived virtual model. Finally, the calibration board was also used for evaluating the accuracy of the calibration. RESULTS: We evaluated the accuracy of the system by calculating the registration error (RE) in 2D and 3D in a microsurgical laboratory setting. Our calibration workflow achieved a RE of 0.11 ± 0.06 mm in 2D and 0.98 ± 0.13 mm in 3D. In addition, we overlaid a 3D CT model on the microscope feed of a 3D resin printed model of a segmented temporal bone. The system exhibited small latency and good registration accuracy. CONCLUSION: We present the calibration of an electromagnetically tracked surgical stereo microscope for augmented reality visualization. The calibration method achieved accuracy within a range suitable for otologic procedures. The AR process introduces enhanced visualization of the surgical field while allowing depth perception.

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