Immediate effects of the semi-occluded bubble mask technique using VocalFeel® device as vocal warm-up in singers.

OBJECTIVE: The present study aims at investigating the immediate effects of the Semi-Occluded Bubble Mask Technique (SOBM) performed with the device VocalFeel® as a vocal warm-up in a group of professional singers. STUDY DESIGN: A randomized controlled study was carried out. METHODS: Forty-four vocally healthy professional singers were randomly divided into two groups on recruitment: an experimental group and a control group. The same vocal warm-up exercise was performed by the experimental group with the SOMB technique and by the control group without semi-occlusion. Self assessments, acoustic analysis and aerodynamic analysis of Peak Nasal Inspiratory Flows (PNIF) and Peak Oral Inspiratory Flows (POIF) were performed. RESULTS: Significant improvements after the SOBM technique were detected in the experimental group concerning some acoustic parameters (Jitt%; Shimm%) and aerodynamic measures (PNIF and POIF). No significant improvements after the warm-up exercise were observed in the control group. Significant differences between the experimental and the control group were found for ΔJitt%, ΔShimm%, ΔNHR, ΔPOIF and self assessments. CONCLUSIONS: The results of the present study support the efficacy of a vocal warm-up performed with the SOBM technique using VocalFeel® device in terms of acoustic quality, aerodynamic measures and perceived phonatory comfort in professional singers.

Future Perspectives in the Management of Otitis Media.

Otitis media, which encompasses acute otitis media (AOM) and chronic otitis media (COM), is a prevalent and significant health issue affecting both children and adults [...].

Monoclonal Antibodies Targeting CGRP: A Novel Treatment in Vestibular Migraine.

Background. Monoclonal antibodies (mAbs) directed against the calcitonin gene-related peptide (CGRP) or its receptor represented the first targeted and specialized approach to migraine prophylaxis. Nevertheless, they have been rarely considered in the treatment of vestibular migraine (VM). Our aim was to evaluate the effectiveness of anti-CGRP mAbs in VM patients who did not respond to conventional migraine treatments. Methods. Consecutive VM patients treated with erenumab were considered. As a comparison, we considered the same VM patients during conventional migraine treatments (i.e., propranolol, flunarizine, or valproic acid), which were tried before mAbs therapy. Videonystagmography, the Italian version of the Dizziness Handicap Inventory (DHI) questionnaire, and migraine days over the last 3 months were evaluated in all patients before and after treatments. Results. In the present retrospective study, we included 21 female and 2 male VM patients, mean age 45.2 years. All patients underwent contrast-enhanced magnetic resonance imaging that ruled out other causes of vertigo. The DHI questionnaire significantly improved after mAb therapy (p < 0.0001). Mean migraine days over the last 3 months were significantly reduced after treatment (p = 0.001). Videonystagmography was altered in 11 (48%) patients prior to monoclonal antibodies. We found vertical positional nystagmus in 9 patients and horizontal positional nystagmus in 2 patients. After the treatment, we found vertical positional nystagmus only in 1 patient (p = 0.002). When patients were treated with conventional therapies, there was no significant reduction in DHI, and instrumental vestibular examinations remained altered. Conclusions. VM patients using anti-CGRP mAbs experienced a reduction in the dizziness-derived handicap, as reported in the DHI questionnaire. Furthermore, these treatments were significantly associated with a normalization of vestibular instrumental analysis. These findings were not seen with conventional treatments. Treatment with anti-CGRP mAbs may be effective in VM patients who did not respond to conventional migraine treatments. These findings should be tested in large, randomized clinical trials.

The Effect of Alpha-Lipoic Acid in the Treatment of Chronic Subjective Tinnitus through the Tinnitus Handicap Inventory Scores.

BACKGROUND AND OBJECTIVES: Tinnitus affects millions of adults. Many therapies, including complementary and alternative medicine and tinnitus retraining therapies, have been trialed, but an effective option, particularly for chronic subjective tinnitus (CTS), is still lacking. MATERIALS AND METHODS: This study investigated the effects of alpha-lipoic acid (600 mg. per day for two months) on two groups of patients using a questionnaire. One group (A) was affected by tinnitus associated with likely cochlear dysfunction and metabolic syndrome, and the other (B) was composed of subjects with acoustic nerve lesions. All the patients were asked to complete the Italian version of the tinnitus handicap inventory (THI) to determine the overall degree of perceived annoyance at the beginning and end of therapy. Pure tone averages for speech frequencies and for high frequencies were computed, and psychoacoustic pitch and loudness matches were determined for each subject before and after treatment. RESULTS: The pure tone audiometry, pitch, loudness, and THI scores of both groups were reported. In group A, statistically significant differences were observed for the "functional" and "emotional" subscales. The total score of THI and the loudness of tinnitus were also significantly reduced. No statistically significant differences were observed in group B. CONCLUSIONS: These findings suggest a possible contribution of the antioxidant effect to the organ of Corti in subjects with metabolic syndrome and CST.

Vertebrobasilar and Basilar Dolichoectasia Causing Audio-Vestibular Manifestations: A Case Series with a Brief Literature Review.

Audio-vestibular symptoms can arise from vertebrobasilar dolichoectasia (VBD) and basilar dolichoectasia (BD). Given the dearth of available information, herein we reported our experience with different audio-vestibular disorders (AVDs) observed in a case series of VBD patients. Furthermore, a literature review analyzed the possible relationships between epidemiological, clinical, and neuroradiological findings and audiological prognosis. The electronic archive of our audiological tertiary referral center was screened. All identified patients had a diagnosis of VBD/BD according to Smoker's criteria and a comprehensive audiological evaluation. PubMed and Scopus databases were searched for inherent papers published from 1 January 2000 to 1 March 2023. Three subjects were found; all of them had high blood pressure, and only the patient with high-grade VBD showed progressive sensorineural hearing loss (SNHL). Seven original studies were retrieved from the literature, overall including 90 cases. AVDs were more common in males and present in late adulthood (mean age 65 years, range 37-71), with symptoms including progressive and sudden SNHL, tinnitus, and vertigo. Diagnosis was made using different audiological and vestibular tests and cerebral MRI. Management was hearing aid fitting and long-term follow-up, with only one case of microvascular decompression surgery. The mechanism by which VBD and BD can cause AVD is debated, with the main hypothesis being VIII cranial nerve compression and vascular impairment. Our reported cases suggested the possibility of central auditory dysfunction of retro-cochlear origin due to VBD, followed by rapidly progressing SNHL and/or unnoticed sudden SNHL. More research is needed to better understand this audiological entity and achieve an evidence-based effective treatment.

Hearing Status and Ventilation Tube at Time of Palatoplasty in Cleft Lip and Palate Patients: A Retrospective Study.

Background and Objectives: There is no consensus regarding the indications for and timing of ventilation tube (VT) insertion in cleft lip and palate (CLP) patients. Our aim was to search for clinical and surgical (i.e., VT insertion) characteristics that influence the hearing status in CLP. Materials and Methods: We reviewed the hearing outcome of consecutive CLP cases operated on at a single referral center. Univariate and multivariate analysis were applied as appropriate. Results: We included 285 consecutive CLP patients, 109 female and 176 male; the mean age at last follow-up was 16.2 years. Unilateral CLP was found in 249 cases and bilateral CLP in 36. Early VTs (i.e., at the time of hard palate surgery) were applied in 75 (26.3%) patients. Late VTs (i.e., after hard palate surgery during follow-up) were applied in 69 (24.2%) children, at a mean age of 6.7 years old. Hearing loss (pure-tone average > 20 dB) was found in 114 (40%) CLP patients at last available follow-up (mild hearing loss in 96 patients, moderate in 18). In univariate and multivariate analyses, we found that only the absence of early VT insertion (p = 0.0003; OR = 18.2) was an independent prognostic factor of hearing loss in CLP patients. Furthermore, when early VTs were not inserted, there was a high risk of late VT (p = 0.002; OR 13.6). Conclusions: According to our results, the absence of VT insertion at the time of hard palate surgery is an independent prognostic risk factor of hearing loss in CLP patients. Early VT placement in CLP patients may prevent hearing loss and related consequences. These findings should be tested in a large, randomized clinical trial.

Age at Fitting Affected Unilateral Versus Bilateral Hearing Aids Choice in Asymmetric Hearing Loss.

BACKGROUND: Bilateral hearing aids are desirable to restore hearing in the most effective and natural way. The aim of the present study was to identify which type of hearing rehabilitation was preferred by our patients and which factors drove their choice. METHODS: One hundred eight patients with moderate-to-severe asymmetrical hearing loss before and after a 1-month trial with bilateral hearing aids were considered. RESULTS: As high as 58.3% of patients decided to continue with bilateral hearing aids (group BI), while 41.7% chose unilateral hearing aid (UNI group) in the best ear. Patients in the UNI group were significantly older than those in the BI group (P=.04); age > 77 years was an independent prognostic factor of unilateral hearing aid choice (odds ratio=6.26; P=.04). Matrix test scored significantly worse with a single hearing aid than with 2 hearing aids in both groups (UNI P=.03; BI P=.01). CONCLUSION: Patients with asymmetric hearing loss often prefer unilateral hearing aid, almost half in our experience. Nonetheless, bilateral hearing aids are desirable as unilateral hearing aid was associated with significantly poorer performance at a speech in noise hearing tests. Age at fitting could play a relevant role and is thus important in early diagnosis. Further studies are needed to confirm our results and investigate strategies to promote bilateral rehabilitation.

Chronic Otitis Media in Patients with Chronic Rhinosinusitis: A Systematic Review.

Introduction: Chronic otitis media (COM) and chronic rhinosinusitis (CRS) are two of the most common otolaryngological disorders. CRS and COM share pathophysiological mechanisms such as bacterial infection, biofilm, and the persistence of the obstruction state of ventilation routes. The purpose of this systematic review was to evaluate all available information on the association between COM and CRS. Methods: The protocol of this investigation was registered on PROSPERO in November 2022. Pubmed, Scopus, Web of Science, and Cochrane databases were systematically searched according to the PRISMA statement. Results: After the application of inclusion-exclusion criteria, four manuscripts with adequate relevance to this topic were included in the review. The study population consisted of 20,867 patients with a diagnosis of CRS, of whom 991 were also diagnosed with COM (4.75%). Conclusions: The included studies have shown that CRS has become significantly associated with COMas: a global inflammatory process that involves the epithelium in both the middle ear and upper airway. The identification of a relationship between CRS and COM may contribute to preventing chronic inflammatory conditions through the early management of the associated disease. Further, carefully designed studies are necessary to demonstrate the relationship between COM and CRS.

Negative Outcome of Temporalis Fascia Graft in Tympanoplasty with Excessive Bleeding: A Retrospective Study.

Background and Objectives: Non-autologous graft materials hold promise for tympanic membrane (TM) perforation closure. In the present manuscript, we aimed to evaluate the influence of clinical and surgical (i.e., graft materials) characteristics on tympanoplasty outcome in chronic otitis media (COM). Materials and Methods: We retrospectively reviewed clinical and surgical characteristics of COM patients with TM perforation treated with tympanoplasty and mastoidectomy. Univariate and multivariate appropriate tests were applied. Results: We used xenograft (porcine submucosal collagen) in 163 patients, and temporalis fascia in 210. The mean follow-up time was 37.2 months. Postoperative TM perforation (i.e., negative outcome) was detected in 11.6% of cases with xenograft, and in 12.8% with temporalis fascia. Performing uni- and multivariate analysis, we determined that large (three or all quadrants) TM perforation (p = 0.04) and moderate-to-severe intraoperative bleeding (p = 0.03) were independent prognostic factors of negative outcome. Considering the 197 patients with moderate-to-severe intraoperative bleeding, we disclosed that the use of temporalis fascia (p = 0.03) was an independent risk factor of postoperative TM perforation. Conclusions: According to our results, large TM perforation and moderate-to-severe intraoperative bleeding were independent prognostic factors of negative outcome in adult COM patients treated with tympanoplasty. In the sub-group of COM patients with excessive intraoperative bleeding, use of temporalis fascia was associated with negative outcome; these patients could benefit from xenograft materials. These findings should be tested in large randomized clinical trials.

Physical Therapy for Benign Positional Vertigo of Posterior Canal: The Role of Alternated Epley and Semont Maneuvers.

OBJECTIVE: To investigate if alternated Epley (EP) and Semont (ST) maneuvers could be more effective than repetition of the same in benign paroxysmal positional vertigo of posterior semicircular canal (pBPPV). DESIGN: We retrospectively reviewed the outcome of pBPPV patients treated with a second maneuver for the persistence of positional nystagmus. STUDY SAMPLE: Forty-seven patients underwent 2 STs, 64 with 2 EPs, and 71 EPs followed by ST. Videonystagmography and Dizziness Handicap Inventory (DHI) questionnaire were performed. RESULTS: Absence of positional nystagmus was achieved after 2 maneuvers in 136 patients with pBPPV: 65.9% in the ST group, 70.3% in the EP group, and 84.5% in the EP-ST group. Alternated EP and ST were significantly more effective than repeated ST (P = .03), while we found no significant difference when compared with repeated EP (P = .07). At 1-month follow-up, 12 patients showed persistent positional nystagmus without difference between groups. After 1 month, the 46 patients with negative outcome had significantly higher DHI values (P = .01) than other 136 patients with pBPPV. CONCLUSIONS: Alternated EP and ST seemed more effective than repeating the same maneuver in treating pBPPV, and this should be confirmed in prospective clinical studies. Resolution of nystagmus after maneuvers was fundamental to reduce handicap deriving from dizziness as reported in DHI.

Application of Patient Reported Outcome Measures in Cochlear Implant Patients: Implications for the Design of Specific Rehabilitation Programs.

INTRODUCTION: Cochlear implants (CI) have been developed to enable satisfying verbal communication, while music perception has remained in the background in both the research and technological development, thus making CI users dissatisfied by the experience of listening to music. Indications for clinicians to test and train music abilities are at a preliminary stage compared to the existing and well-established hearing and speech rehabilitation programs. The main aim of the present study was to test the utility of the application of two different patient reporting outcome (PRO) measures in a group of CI users. A secondary objective was to identify items capable of driving the indication and design specific music rehabilitation programs for CI patients. MATERIALS AND METHODS: A consecutive series of 73 CI patients referred to the Audiology Unit, University of Padova, was enrolled from November 2021 to May 2022 and evaluated with the audiological battery test and PRO measures: Musica e Qualità della Vita (MUSQUAV) and Nijmegen Cochlear Implant Questionnaire (NCIQ) Italian version. RESULTS: The reliability analysis showed good consistency between the different PRO measures (Cronbach's alpha = 0.873). After accounting for the epidemiological and clinical variables, the PRO measures showed a correlation with audiological outcomes in only one case (rho = -0.304; adj. p = 0.039) for NCIQ-T with the CI-pure tone average. A willingness for musical rehabilitation was present in 63% of patients (Rehab Factor, mean value of 0.791 ± 0.675). CONCLUSIONS: We support the role of the application of MUSQUAV and NCIQ to improve the clinical and audiological evaluation of CI patients. Moreover, we proposed a derivative item, called the rehab factor, which could be used in clinical practice and future studies to clarify the indication and priority of specific music rehabilitation programs.

Pediatric temporomandibular joint ankylosis and arthritis: Forgotten complications of acute otitis media.

OBJECTIVES: Temporomandibular joint (TMJ) arthritis and ankylosis represent unusual but potential complications of ear suppuration, especially in children. We performed a review of the literature of pediatric otogenic TMJ arthritis and ankylosis, discussing their clinical and radiological features, their mechanism of infection spread, and the importance of a prompt diagnosis and treatment. We additionally describe a case of TMJ ankylosis following acute mastoiditis in a 4-year-old female patient. METHODS: A search of English literature from January 1, 1980 to December 31, 2021 was performed on the electronic databases (PubMed, Web of Science and Scopus) in order to identify studies concerning TMJ complication after ear suppuration. RESULTS: Seventeen articles were considered eligible for the review. Eight and nine studies described otogenic TMJ ankylosis and arthritis, respectively. A total of 17 children affected by ankylosis consequent to ear infection and a total of 31 cases of TMJ arthritis concurrent to otomastoiditis were identified. Mean time elapsed between ear infection and diagnosis of TMJ ankylosis was 4.8 years (range 0.5-13). CONCLUSION: TMJ involvement during complicated otitis media should be kept in mind. Its prompt recognition is mandatory to set up appropriate treatment and follow-up and reduce the risk of ankylosis with its functional and psychological complications.

Digging into the Role of Inflammatory Biomarkers in Sudden Sensorineural Hearing Loss Diagnosis and Prognosis: A Systematic Review and Meta-Analysis.

Background and Objectives: Sudden Sensorineural Hearing Loss (SSNHL) is a quite common clinical finding in otolaryngology. Most cases are classified as idiopathic and there is a dearth of information on factors able to predict the response to treatment and hearing recovery. The main aim of this systematic review and meta-analysis was to assess and critically discuss the role of circulating inflammatory biomarkers in SSNHL. Materials and Methods: A search was conducted of the English literature published between 1 January 2009 and 7 July 2022 on Pubmed, Scopus, Web of Science, ScienceDirect, and Cochrane following PRISMA guidelines. Results: A total of 256 titles were retrieved from the search. After full-text screening and application of inclusion/exclusion criteria, 13 articles were included. Twelve out of thirteen studies reported significant differences in biomarkers values in SSNHL patients, of which Tumor Necrosis Factor alpha (TNF-α) and C-reactive Protein (CRP) were the most analyzed. Our meta-analysis for CRP's mean values in SSNHL groups vs. controls showed significantly higher CRP levels with a pooled overall difference of 1.07; confidence interval (CI) at 95%: 0.03; 2.11. For TNF-α, discordant results were found: three studies showed significantly higher levels in SSNHL patients vs. controls, whereas other three investigations showed lower levels in the SSNHL groups (overall pooled difference 1.97; 95% CI: -0.90; 4.84). A high between-study heterogeneity was found. Conclusions: This systematic review pointed out that, although there exists a growing literature in the field of circulatory biomarkers identification in SSNHL, there is a high heterogeneity of results and low quality of evidence. CRP resulted to be higher in SSNHL patients than in controls, while TNF-α showed more heterogeneous behavior. The data reported herein needs to be confirmed in well-designed prospective multicenter randomized studies, with the objective of improving SSNHL treatment and outcome and thereby reducing the social burden of hearing loss.

Ototoxicity of Immunosuppressant Drugs: A Systematic Review.

BACKGROUND: Nowadays, immunosuppressant drugs are widely used to prevent rejection in organ transplantation and to treat autoimmune diseases. Ototoxicity related to immunosuppressant drugs has been anecdotally reported but scarcely investigated. The aim of this investigation was to systematically review the available data on ototoxicity due to immunosuppressant therapy for transplantation or autoimmune disease. METHODS: A search of electronic databases (PubMed, Web of Science, and Scopus) was performed in order to identify studies concerning otovestibular toxicity due to immunosuppressant therapy for transplantation or autoimmune disease between January 1980 and November 2020. RESULTS: Eighteen articles were considered eligible for the review. Totally 131 patients experienced ototoxicity related to immunosuppressive treatment. Hearing loss was the most common clinical manifestation (128 cases) and was mainly bilateral. Tinnitus was reported in 52 cases and vertigo in 2. The immunosuppressant drugs most frequently involved in ototoxic manifestations were calcineurin inhibitors (cyclosporine and tacrolimus), often related to their high serum levels. CONCLUSION: Immunosuppressant-related ototoxicity is clinically relevant in uncommon but definitely challenging situations. Clinicians should be aware of this and inquire about hearing impairment symptoms during therapy and refer symptomatic patients to an otolaryngologist/audiologist. Further large-scale, prospective investigations are necessary to better characterize the ototoxicity of each class of immunosuppressants.

Higher incidence of Ménière's disease during COVID-19 pandemic: a preliminary report.

BACKGROUND: Coronavirus disease 2019 (COVID-19) pandemic represented a stressful event. OBJECTIVES: The incidence of newly diagnosed Ménière's disease (MD) patients before and during COVID-19 at our Institution was calculated. MATERIALS AND METHODS: The period 2018-2020 was considered. Incidence was calculated as number of annual first MD diagnoses divided by the number of annual first audiological evaluations. RESULTS: One hundred and eighty-three patients were considered. Annual incidence of MD at our institution was 1.3% in 2018, 1.2% in 2019, and 3.2% in 2020, resulting in a significant increase during COVID-19 pandemic (2018 vs. 2020, p=.00001; 2019 vs. 2020, p=.00001). MD patients in 2020 presented a higher number of vertigo attacks (2018 vs. 2020, p=.04; 2019 vs. 2020, p=.04) and higher Dizziness Handicap Inventory questionnaire (DHI) values (2018 vs. 2020, p=.02; 2019 vs. 2020, p=.03). During COVD-19 pandemic, MD patients reported significantly higher State-Trait Anxiety Inventory (STAI) - Y1 (2018 vs. 2020, p=.04; 2019 vs. 2020, p=.03). CONCLUSIONS AND SIGNIFICANCE: A higher incidence of MD first diagnosis was calculated during COVID-19 pandemic; furthermore, MD patients presented with more vertigo attacks and higher DHI values. These could be associated with the higher state anxiety during COVID-19 pandemic.

Audio-vestibular disorders and pregnancy: A systematic review.

PURPOSE: During pregnancy a woman's body undergoes many physiological changes that involve all systems and organs, including sensory ones. We conducted this systematic review to highlight current evidence and treatment options in pregnant women with audio-vestibular disorders. MATERIALS AND METHODS: A search was made on the following databases: PubMed, PubMed Central, Web of Science and Scopus. This research protocol was deposited in the PROSPERO Database. RESULTS: After application of inclusion-exclusion criteria, 30 manuscripts were included in the review. Many authors (14/15) found a slight alteration of audiometric tests during pregnancy, with a reported recovery postpartum in most of the studies (5/7). Regarding sudden sensorineural hearing loss (SSNHL), we found four articles for a total of 69 patients: the treatment of choice was intravenous Dextran 40 and intra-tympanic corticosteroids. Most included studies (4/6) found neither clinical nor epidemiological associations between otosclerosis and pregnancy in large-based sample studies. Few investigations regarded Eustachian tube function and vertigo. CONCLUSIONS: According to our results, many variations of hearing acuity during pregnancy are slight and transient and require only clinical observation. In large samples, otosclerosis appeared not to be associated with pregnancy. Clinicians should consider intra-tympanic steroids in managing SSNHL during pregnancy. Further more accurate research is needed to deepen and clarify the association between pregnancy and audio-vestibular disorders.

Acute Vertigo After CrossFit Workout in a Young Woman With Chiari I Malformation.

CrossFit workout is associated with injuries mostly located over the spine and upper limb. Chiari I malformation (CIM) is characterized by migration of the cerebellar tonsils below the foramen magnum and this clinical condition has never been described after high-intense training such as CrossFit. A 19-year-old woman presented to the ED with acute vertigo, nausea, vomiting, and horizontal spontaneous nystagmus; symptoms began after an intense workout session. During neuro-otological examination, spontaneous positional left-beating horizontal nystagmus, normal response to bi-thermal caloric stimulations, and unremarkable cervical vestibular evoked myogenic potentials in both ears were observed; pure tone audiometry showed normal hearing. Central vertigo was suspected; therefore, an MRI was done, which identified a CIM. The patient's symptoms spontaneously improved at short term. The six-month follow-up MRI confirmed no changes. The subject completely stopped any training and remained asymptomatic over a 12-month follow-up. Our case report is the first describing CIM presented with acute vertigo after a high-intensity training.

A Critical Look Into Stapedotomy Learning Curve: Influence of Patient Characteristics and Different Criteria Defining Success.

PURPOSE: To evaluate stapedotomy learning curve with cumulative summation methodology using different success criteria (ie, air-bone gap [ABG] ≤10 dB, ABG ≤15 dB, restoration of interaural symmetry, or hearing threshold gain >20 dB), and to assess patient characteristics influencing or modifying the learning curve. METHODS: Retrospective chart review of primary and revision stapedotomy cases performed by surgeon 1 (S1, n = 78) and surgeon 2 (S2, n = 85). RESULTS: Using the classic criterion for a successful stapedotomy (ABG ≤10 dB), patients with preoperative ABG >34 dB were associated with unsuccessful procedures (S1 P = .02; S2 P = .07). Revision surgery was associated with unsuccessful outcomes (S1 P = .005; S2 P = .0012). Cumulative summation plots using different criteria did not show a linear trend of association between stapedotomy success and number of operations, but preoperative characteristics of the patients who underwent stapedotomy significantly influenced the plots. Cumulative summation plots showed an initial increasing tendency with improving results, but when ear surgeons got more skilled, they operated on more complex cases (ie, patients with higher preoperative ABG or revision stapedotomy) and they could not meet the success criteria. CONCLUSIONS: Cumulative summation plots do not seem useful to evaluate the stapedotomy learning curve, as they do not correctly deal with heterogeneous case series. The increasing complexity of the stapedotomy patients during the surgeons' career impacts on the outcome of stapedotomy and confounds the evaluation of the growing skills of the surgeon. Stapedotomy audiological success rates are strongly influenced by the success criteria used.