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Search Results (351)

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12 pages, 6529 KB  
Article
Ototoxicity of a Single Fulminant Episode of Acute Otitis Media in Children: A Long-Term Follow-Up
by Matija Švagan
Audiol. Res. 2026, 16(3), 93; https://doi.org/10.3390/audiolres16030093 (registering DOI) - 22 Jun 2026
Viewed by 108
Abstract
Background/Objectives: Recurrent acute otitis media (AOM) in children is known to cause cumulative cochlear and vestibular injury. Whether a single fulminant episode severe enough to require surgical intervention produces an analogous long-term audiovestibular signature, and whether infection severity contributes to outcome independently of [...] Read more.
Background/Objectives: Recurrent acute otitis media (AOM) in children is known to cause cumulative cochlear and vestibular injury. Whether a single fulminant episode severe enough to require surgical intervention produces an analogous long-term audiovestibular signature, and whether infection severity contributes to outcome independently of cumulative episode count, is unclear. The present study addressed this gap. Methods: In this single-centre retrospective cohort study, 65 paediatric patients who had undergone surgical treatment for acute mastoiditis—the fulminant form of AOM—between July 2001 and March 2021 were assessed a median of 11.5 years after surgery. Of these, 35 had undergone mastoidectomy with tympanostomy and 30 had undergone tympanostomy alone because their episode had not been severe enough to require mastoidectomy. Thirty-two age-matched healthy volunteers (one ear each) formed the control group, yielding 97 ears in three groups (Group TM, 35 ears; Group T, 30 ears; Group C, 32 ears). Extended high-frequency pure-tone audiometry (125–20 kHz), distortion-product otoacoustic emissions (DPOAEs), single-frequency and wideband tympanometry, ipsilateral acoustic reflex thresholds, and lateral-canal vestibulo-ocular reflex gain were measured. Results: Both operated groups showed significantly elevated audiometric thresholds in the high- and extended high-frequency ranges compared with controls (HTA: χ2 = 24.25, p < 0.001), with corresponding reductions in DPOAE amplitudes (HTA: χ2 = 25.04, p < 0.001). Group TM did not differ significantly from Group T at any frequency band, indicating a negligible additional contribution of mastoidectomy itself. Acoustic reflex thresholds were elevated in Group TM. Vestibulo-ocular reflex gain was within reference ranges in all groups. Conclusions: A single fulminant episode of acute middle-ear infection in childhood—whether severe enough to require mastoidectomy or treated by tympanostomy alone—was associated, more than a decade later, with significantly elevated audiometric thresholds closely resembling those reported after multiple recurrent infections, supporting an effect of infection severity independent of cumulative episode count. Long-term audiological follow-up with extended high-frequency audiometry and otoacoustic emission testing is warranted, irrespective of whether mastoidectomy was required. Full article
(This article belongs to the Special Issue Ototoxicity: Prevention, Diagnosis, and Treatment)
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10 pages, 292 KB  
Systematic Review
Wideband Tympanometry Findings in Otitis Media with Effusion—A Systematic Review
by Jakub Osowski, Bogusław Mikaszewski, Tomasz Przewoźny and Aleksandra Klein-Obrębska
J. Clin. Med. 2026, 15(11), 4255; https://doi.org/10.3390/jcm15114255 - 31 May 2026
Viewed by 279
Abstract
Background/Objective: Otitis media with effusion (OME) is a prevalent condition in the pediatric population worldwide. If left untreated, it can lead to serious complications such as permanent middle ear damage and hearing loss. Methods: This study aims to evaluate the utility of [...] Read more.
Background/Objective: Otitis media with effusion (OME) is a prevalent condition in the pediatric population worldwide. If left untreated, it can lead to serious complications such as permanent middle ear damage and hearing loss. Methods: This study aims to evaluate the utility of wideband tympanometry (WBT) in diagnosing OME in children. A comprehensive literature search was conducted independently by two authors across three major databases—PubMed, Scopus, and Embase covering the period from 1 January 2000 to 11 November 2025. Discrepancies in data extraction or interpretation were resolved by consensus. Results: The study analyzed data from 1115 ears with surgically confirmed tympanic effusion and compared these with 721 ears from healthy controls. The most significant reduction in absorbance values was observed in the low- and mid-frequency ranges. These absorbance parameters effectively differentiated WBT results obtained in healthy children from those in patients with surgically confirmed effusion during myringotomy. Conclusions: In ears with effusion, characteristic alterations in absorbance patterns—reflecting increased stiffness of the middle ear’s mechanical system—can be identified via wideband tympanometry. This novel audiological assessment shows promise for the diagnosis of OME; further research is warranted to validate its clinical utility and to compare it with existing diagnostic methods. Full article
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22 pages, 6528 KB  
Review
Molecular Characterization of the Middle Ear Microbiome in Pediatric Otitis Media with Effusion: Diagnostic and Clinical Implications
by Maciej Szwajkowski, Jagoda Szwach, Sara Shefa, Anna Karwowska, Aleksandra Głębocka, Katarzyna Pazdro-Zastawny and Karolina Dorobisz
J. Clin. Med. 2026, 15(11), 4200; https://doi.org/10.3390/jcm15114200 - 29 May 2026
Viewed by 397
Abstract
Background: Otitis media with effusion (OME) is a highly prevalent pediatric condition and a leading cause of conductive hearing loss in children. Its pathogenesis remains uncertain, and diagnostic and therapeutic challenges make management difficult. Objectives: This review evaluates current evidence on the middle [...] Read more.
Background: Otitis media with effusion (OME) is a highly prevalent pediatric condition and a leading cause of conductive hearing loss in children. Its pathogenesis remains uncertain, and diagnostic and therapeutic challenges make management difficult. Objectives: This review evaluates current evidence on the middle ear microbiome in pediatric OME, focusing on the diagnostic value of 16S ribosomal ribonucleic acid (16S rRNA) gene sequencing and its potential clinical implications. Methods: A literature review was conducted using the PubMed database, including studies published between 2006 and 2026. Eligible studies involved pediatric patients with OME and examined the sources and characteristics of microbiota potentially involved in disease pathogenesis. Microbiome analysis was performed using next-generation sequencing (NGS) techniques. Results: Growing evidence indicates that OME is associated with microbial dysbiosis and biofilm formation rather than a sterile inflammatory process. The most frequently detected genera include Haemophilus, Moraxella, Streptococcus, and Alloiococcus, although substantial variability exists between studies. Pathogens are believed to reach the middle ear through the Eustachian tube from two main reservoirs: the nasopharynx and the adenoids. The potential role of Helicobacter pylori infection and gastroesophageal reflux disease (GERD) in OME pathogenesis remains uncertain and requires further investigation. NGS methods, including 16S rRNA sequencing, demonstrate higher sensitivity than conventional culture techniques, enabling the detection of fastidious and previously unrecognized microorganisms. Evidence also highlights the limited effectiveness of antibiotic therapy in OME, the persistent issue of antibiotic overuse, and the relative advantages of conservative management and microbiome-modulating approaches compared with antibiotics and surgical interventions. Conclusions: Current evidence suggests that OME is closely associated with microbiota dysbiosis and bacterial biofilm formation. Given the limited efficacy of antibiotics, microbiome-focused strategies—particularly probiotics—should be further explored. Molecular diagnostic methods, especially NGS, show clear advantages over traditional culture-based techniques. Future research should further evaluate microbiome modulation as a potential adjunctive or preventive strategy. Full article
(This article belongs to the Section Otolaryngology)
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14 pages, 1962 KB  
Article
Profile of Otorhinolaryngology-Related Emergency Department Visits and Revisits in a Tertiary Care Center in Riyadh, Saudi Arabia
by Othman Ibrahim Alabdalwahab, Fahad Waleed Bin Aziz, Abdulmohsen Jameel Alshammari, Mohammed Abdullah Bayounis, Bander Fahad Aljarallah, Jawad Yousef Alhabeeb, Hessah Ibrahim Alsarra, Muhnnad Abdulaziz Alghamdi, Meshary Binhotan and Abdullah Alshibani
Healthcare 2026, 14(10), 1378; https://doi.org/10.3390/healthcare14101378 - 18 May 2026
Viewed by 392
Abstract
Background/Objectives: Otorhinolaryngologic (ENT) complaints constitute a substantial proportion of emergency department (ED) visits, ranging from minor to life-threatening problems. The patterns and frequency of these presentations in Saudi Arabia remain poorly described. This study, therefore, aimed to address this gap by examining [...] Read more.
Background/Objectives: Otorhinolaryngologic (ENT) complaints constitute a substantial proportion of emergency department (ED) visits, ranging from minor to life-threatening problems. The patterns and frequency of these presentations in Saudi Arabia remain poorly described. This study, therefore, aimed to address this gap by examining the most frequent ENT-related presentations to the ED at a tertiary center in Riyadh, Saudi Arabia, to identify common diagnoses, describe patient demographics, and evaluate annual trends in ED visits. Methods: A retrospective study of all consecutive ENT-related emergency department visits between January 2019 and December 2024 was conducted at King Abdulaziz Medical City, a tertiary care center in Riyadh, Saudi Arabia. Diagnosis classification used the International Classification of Diseases, 10th Revision (ICD-10). Data on patient demographics, presenting complaints, and hospital admissions were extracted. Descriptive analyses were performed to assess annual trends and common diseases. Results: A total of 22,014 patients were included in the present study, with a slight male (54%) predominance. Across 34,290 ED visits, annual presentations were the highest in 2019 (23.9%) and lowest in 2020 (9.2%). Most patients were discharged from ED (91.9%). The most frequent diagnoses were acute pharyngitis (29.1%), acute tonsillitis (26.2%), and otitis media (22.3%). Conclusions: The study examined the otorhinolaryngology conditions most frequently encountered in an ED setting. The findings highlight a range of ENT disorders that are commonly seen in this setting. Recognizing these prevalent conditions and their patterns can improve ED physicians’ preparedness, triage, and management of patients presenting with ENT emergencies. Full article
(This article belongs to the Special Issue Care and Treatment of Ear, Nose, and Throat)
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18 pages, 3309 KB  
Systematic Review
Prevalence and Global Distribution of Bacterial Species Associated with Acute Otitis Media in Children: Systematic Review and Meta-Analysis
by Hye Ok Kim, Suhyeon Ha, Seung Hyung Lee, Yeon Ju Oh, Jae Min Lee, Youn-Jung Kim, Manish Kumar Singh, Sung Soo Kim, Jin Woo Choi and Seung Geun Yeo
Antibiotics 2026, 15(5), 463; https://doi.org/10.3390/antibiotics15050463 - 3 May 2026
Viewed by 887
Abstract
Background/Objectives: Acute otitis media (AOM) remains a leading cause of pediatric morbidity and a primary indication for antibiotic prescription worldwide. Given the potential for serious complications and the evolving landscape of antimicrobial resistance, up-to-date epidemiological data on causative bacteria are essential. This study [...] Read more.
Background/Objectives: Acute otitis media (AOM) remains a leading cause of pediatric morbidity and a primary indication for antibiotic prescription worldwide. Given the potential for serious complications and the evolving landscape of antimicrobial resistance, up-to-date epidemiological data on causative bacteria are essential. This study aimed to assess the global prevalence of major bacterial pathogens in pediatric AOM and evaluate variations across geographic regions and temporal periods (pre-2000 vs. post-2000). Methods: A systematic search of PubMed, Embase, and Web of Science (1980–2025) was conducted to identify studies reporting middle ear fluid culture results in children (0–18 years) with AOM. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, 45 studies encompassing 16,305 AOM episodes were included. Data were synthesized from North America, Europe, the Middle East, Asia, Oceania, and Africa. Pooled prevalence estimates and 95% confidence intervals (CIs) were calculated using a random-effects model, and heterogeneity was assessed via the I2 statistic. Results: The overall pooled culture-positive rate was 66.6% (95% CI, 62.2–70.8%). Regional pooled estimates ranged from 56.1% in the Middle East (95% CI, 40.3–70.6%; underlying counts, 3776/10,652) to 77.5% in North America (95% CI, 68.2–84.7%; underlying counts, 1567/2125). Streptococcus pneumoniae was the most prevalent pathogen, with a pooled proportion of 29.0% (95% CI, 26.3–31.8%), followed by Haemophilus influenzae (22.3%; 95% CI, 19.3–25.6%) and Moraxella catarrhalis (4.6%; 95% CI, 3.4–6.1%). While S. pneumoniae remained the leading pathogen in most regions, H. influenzae showed marked geographic variability, peaking in the Middle East at 27.5% (95% CI, 17.0–41.2%; underlying counts, 2280/10,652) and reaching its lowest level in Asia at 13.5% (95% CI, 7.8–22.4%; underlying counts, 336/1854). The pooled culture-positive rate declined from 72.5% before 2000 (95% CI, 67.6–76.9%; underlying counts, 5769/8199) to 59.4% in 2000 and later (95% CI, 52.1–66.3%; underlying counts, 6661/15,707), although S. pneumoniae remained the predominant isolate in both periods. Conclusions: S. pneumoniae remains the primary bacterial driver of pediatric AOM globally. However, the observed geographic disparities and the temporal shift in pathogen prevalence following pneumococcal conjugate vaccine (PCV) introduction underscore the necessity for region-specific empirical antibiotic selection. These findings highlight the critical need for sustained microbiological surveillance to inform future vaccination and treatment strategies. Full article
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8 pages, 245 KB  
Article
Comparative Effectiveness of Endoscopic Coblation Adenotonsillotomy Versus Conventional Adenoidectomy in Pediatric Chronic Otitis Media with Effusion: A 12-Month Longitudinal Study
by Doinel G. Rădeanu, Constantin Stan, Valeriu Bronescu, Octavian D. Palade and Alma A. Maniu
Surg. Tech. Dev. 2026, 15(2), 17; https://doi.org/10.3390/std15020017 - 26 Apr 2026
Viewed by 517
Abstract
Background/Objectives: Chronic otitis media with effusion (OME) is the primary cause of conductive hearing loss in children. High recurrence rates following conventional surgery are often linked to incomplete nasopharyngeal clearance or persistent adenotonsillar biofilms. This study evaluates the long-term impact of endoscopic [...] Read more.
Background/Objectives: Chronic otitis media with effusion (OME) is the primary cause of conductive hearing loss in children. High recurrence rates following conventional surgery are often linked to incomplete nasopharyngeal clearance or persistent adenotonsillar biofilms. This study evaluates the long-term impact of endoscopic coblation adenotonsillotomy on middle ear clearance and disease recurrence compared to conventional curettage adenoidectomy. Methods: We conducted a prospective comparative study on 142 pediatric patients with persistent OME. Participants were allocated into Group A (Endoscopic Coblation Adenotonsillotomy, n = 72) and Group B (Conventional Curettage Adenoidectomy, n = 70). Groups were homogeneous regarding age, gender, and baseline audiological parameters (p > 0.05), all presenting with moderate conductive hearing loss and Type B/C tympanograms. Primary outcomes included tympanometric normalization (Type A conversion), auditory gain (Air–Bone Gap closure), and the rate of secondary ventilation tube (VT) insertion, monitored at 1, 3, 6, and 12 months. Results: At the 1-month follow-up, Group A showed a higher normalization rate than Group B (75.0% vs. 60.0%), though this was near the threshold of statistical significance (p = 0.058). However, at 3, 6, and 12 months, the coblation group demonstrated significantly higher recovery rates (p < 0.05). By 12 months, 94.4% of Group A maintained a Type A tympanogram compared to 78.5% in Group B. Group A achieved a significantly lower mean ABG at 12 months (8.2 ± 3.1 dB vs. 12.6 ± 5.4 dB, p < 0.001), reflecting a superior auditory gain (20.2 dB vs. 15.3 dB). Furthermore, the recurrence rate was significantly lower in Group A (4.1% vs. 15.7%, p = 0.021), resulting in a substantially lower requirement for secondary VT insertion compared to the conventional group (2.7% vs. 12.8%, p = 0.018). Conclusions: Endoscopic coblation adenotonsillotomy provides significant long-term clinical advantages over conventional curettage. By ensuring precise, atraumatic clearance of the Fossa of Rosenmüller and addressing the tonsillar biofilm reservoir, this technique achieves more stable middle ear aeration and superior auditory recovery, significantly reducing the necessity for secondary surgical interventions at one year. Full article
19 pages, 519 KB  
Article
Economic Evaluation of Pneumococcal Vaccination in Egypt: Cost-Effectiveness, Budget Impact, and Domestic Manufacturing Potential
by Chrissy Bishop, Arnold Hagens, Federico Rodriguez-Cairoli, Konstantina Politopoulou, Zicheng Wang, Motuma Abeshu, Sowmya Kadandale, Ibironke Oyatoye and Saadia Farrukh
Vaccines 2026, 14(4), 318; https://doi.org/10.3390/vaccines14040318 - 1 Apr 2026
Viewed by 1182
Abstract
Background/Objectives: Streptococcus pneumoniae remains a major cause of morbidity and mortality in Egypt, yet pneumococcal conjugate vaccines (PCVs) are not included in the national immunization program. Recent commitments to domestic vaccine manufacturing and temporary Gavi support create a timely decision context for policymakers [...] Read more.
Background/Objectives: Streptococcus pneumoniae remains a major cause of morbidity and mortality in Egypt, yet pneumococcal conjugate vaccines (PCVs) are not included in the national immunization program. Recent commitments to domestic vaccine manufacturing and temporary Gavi support create a timely decision context for policymakers to assess whether PCV introduction is cost-effective, affordable, and sustainable within Egypt’s health financing constraints. This study evaluates the cost-effectiveness, budget impact, and return on investment (ROI) of PCV introduction in Egypt. Methods: A deterministic, age-structured dynamic transmission model was developed to estimate the health and economic outcomes of PCV introduction over a 20-year horizon from a healthcare payer perspective. The analysis was conducted in line with the Consolidated Health Economic Evaluation Reporting Standards 2022 (CHEERS 2022) guidelines. The model captures direct and indirect effects across all age groups and includes pneumonia, meningitis, non-pneumonia non-meningitis invasive disease, and acute otitis media. Scenarios assessed immediate versus delayed introduction, alternative PCV10-to-PCV13 pathways, and domestic manufacturing price assumptions. Outcomes included deaths averted, incremental cost-effectiveness ratios (ICERs) relative to GDP per capita, budget impact, and ROI using the value of statistical life. Results: Immediate PCV13 introduction was projected to avert 139,451 deaths across all age groups over 20 years, with an ICER of 523.31 USD per DALY averted equal to 0.16 × GDP per capita. The total budget impact was USD 124.9 million per year without Gavi support and USD 120.9 million with support, yielding an ROI of 23.1. Delaying the introduction substantially reduced health gains and economic returns. Pathways involving initial PCV10 introduction followed by transition to PCV13 achieved similar health outcomes with a lower budget impact and higher ROI. Conclusions: PCV introduction in Egypt represents a high-value investment. Immediate introduction maximizes health and economic benefits, while delayed introduction entails substantial opportunity costs. Alternative PCV10-to-PCV13 pathways offer a more affordable route with a similar long-term impact. Full article
(This article belongs to the Special Issue Cost-Effectiveness of Vaccines and Public Health)
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15 pages, 2649 KB  
Article
Pediatric Adenotonsillectomy over 20 Years in a High-Volume Italian Centre: Positive Outcomes with Low Complications—The Sassuolo Hospital Experience
by Gennaro Confuorto, Renato Baldi, Elisa Cigarini, Giorgio Di Lorenzo, Silvia Menabue, Federico Spagnolo, Margherita Trani, Massimo Zanni, Livio Presutti, Daniele Marchioni and Paolo Gambelli
Pediatr. Rep. 2026, 18(2), 45; https://doi.org/10.3390/pediatric18020045 - 23 Mar 2026
Viewed by 766
Abstract
Background: Pediatric adenotonsillectomy is commonly performed for infectious and obstructive indications, but postoperative hemorrhage remains a concern. This study describes outcomes from a high-volume territorial network in southern Modena province, Italy. Methods: Retrospective observational study of 10,753 pediatric patients (aged 3–18 years) undergoing [...] Read more.
Background: Pediatric adenotonsillectomy is commonly performed for infectious and obstructive indications, but postoperative hemorrhage remains a concern. This study describes outcomes from a high-volume territorial network in southern Modena province, Italy. Methods: Retrospective observational study of 10,753 pediatric patients (aged 3–18 years) undergoing adenotonsillectomy at Sassuolo Hospital and affiliates (Vignola, Pavullo) from 2005 to 2024. Indications included recurrent tonsillitis (Paradise criteria), obstructive sleep apnea (OSA) (polysomnography-confirmed or clinical), and recurrent otitis media or otitis media with effusion (OME). Surgical techniques included curettage adenoidectomy and Colorado microdissection needle tonsillectomy. Our institutional postoperative care protocol included analgesics, oral hydration, soft diet, antibiotics (amoxicillin) and scheduled follow-up; however, no analysis regarding this protocol was intended to demonstrate correlations with study outcomes. Primary outcomes were postoperative hemorrhage (overall and requiring revision), stratified by indication, age, and technique, and contextualized against ranges reported in large published cohorts (qualitative, exploratory comparison). Secondary outcomes included pain (VAS scores), infection rates, and tissue regrowth. Data completeness was verified via electronic records (95.6%). Statistical analyses used descriptive statistics with 95% confidence intervals (95% CI) and inferential tests for within-cohort comparisons (χ2 tests, Fisher’s exact test, and t-tests where appropriate). Results: A total of 10,753 procedures were analyzed (4325 tonsillectomies, 3942 adenotonsillectomies, 2486 adenoidectomies). Postoperative hemorrhage occurred in 202 patients (1.88%; 95% CI 1.64–2.15%); surgical revision was required in 75 (0.70%; 95% CI 0.56–0.87%), with multifactorial stratification showing higher risk for infectious indications (OR 1.41 vs. OSA), younger age < 5 years (OR 2.1), and tonsillectomy origin (OR 8.25 vs. adenoidectomy); all rates are at the lower end of literature ranges (2–5% and 0.9–2.5%, respectively), in line with large published cohorts, although these comparisons are qualitative and exploratory. Mean VAS pain scores decreased from 3.2 (day 1) to 1.1 (day 7). No significant infections occurred; tissue regrowth rates aligned with the literature (adenoidal 6–26%, tonsillar 5–10%). Conclusions: Sassuolo Hospital’s experience highlights favorable postoperative outcomes and low complication rates in adenotonsillar surgery. Limitations include the retrospective design, potential selection bias and long period evaluation. Prospective studies are needed to confirm these findings. Full article
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16 pages, 1446 KB  
Article
Beyond the Air–Bone Gap: The Role of Bone Conduction Thresholds in Predicting Functional Outcomes and Guiding Surgical Decision-Making in Active Middle Ear and Bone Conduction Implants
by Joan Lorente-Piera, Raquel Manrique-Huarte, Sebastián Picciafuoco, Janaina P. Lima, Valeria Serra and Manuel Manrique
Audiol. Res. 2026, 16(2), 46; https://doi.org/10.3390/audiolres16020046 - 17 Mar 2026
Viewed by 968
Abstract
Introduction: In patients with conductive and mixed hearing loss, implantable hearing devices such as active middle ear implants (AMEIs) and bone conduction implants (BCIs) are established alternatives when conventional hearing aids fail. Although bone conduction (BC) thresholds are routinely used as eligibility [...] Read more.
Introduction: In patients with conductive and mixed hearing loss, implantable hearing devices such as active middle ear implants (AMEIs) and bone conduction implants (BCIs) are established alternatives when conventional hearing aids fail. Although bone conduction (BC) thresholds are routinely used as eligibility criteria, their role as frequency-specific predictors of postoperative functional outcomes remains poorly defined. This study aimed to evaluate the influence of preoperative BC thresholds across the audiometric spectrum on postoperative speech recognition outcomes after implantation with AMEIs and BCIs. Methods: A retrospective observational study was conducted at a tertiary referral center including patients implanted with BCIs or AMEIs. Pre- and postoperative audiological data were analyzed, including air and bone conduction thresholds, frequency-segmented BC measures (low, mid, and high frequencies), cochlear frequency gradient (ΔBC Slope), and speech recognition scores (SRSs) at 65 dB HL one year after implantation. Results: 102 patients were included (50 BCI, 52 AMEI). Both implant types achieved significant postoperative improvements in tonal thresholds and SRS compared with pre-implantation values (all p < 0.001). High-frequency BC thresholds (BC-High, 4–6 kHz) showed a significant inverse correlation with postoperative SRS in both BCI (r = −0.382, p = 0.001) and AMEI users (r = −0.398, p < 0.001), and emerged as the only independent predictor in multivariable models (BCI: β = −0.533, p = 0.022; AMEI: β = −0.491, p = 0.020). Low- and mid-frequency BC measures were not associated with postoperative speech outcomes (all p > 0.05). ROC analyses demonstrated excellent discriminative performance of BC-High for identifying suboptimal outcomes, with area under the curve values of 0.92 for BCI (p = 0.001) and 0.94 for AMEI (p = 0.002), and implant-specific cutoff values of >47 dB HL and >61 dB HL, respectively. Conclusions: High-frequency BC thresholds showed the strongest association with postoperative speech recognition after implantable hearing rehabilitation. BC-High could function as a prognostic marker of functional outcome rather than an eligibility criterion, providing clinically meaningful information to refine preoperative counseling and individualized decision-making within current indication frameworks. Full article
(This article belongs to the Section Hearing)
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17 pages, 821 KB  
Article
Inflammatory Endotypes of Chronic Adenoiditis and Their Impact on Persistent Middle Ear Dysfunction: A 2-Year Retrospective Translational Study Integrating Clustering and Machine Learning Approaches
by Diana Szekely, Flavia Zara, Raul Patrascu, Cristina Stefania Dumitru, Alina Cristina Barb, Dorin Novacescu, Alexia Manole, Dan Iovanescu and Gheorghe Iovanescu
Medicina 2026, 62(3), 537; https://doi.org/10.3390/medicina62030537 - 13 Mar 2026
Viewed by 597
Abstract
Background and Objectives: Chronic adenoiditis is a major contributor to persistent middle ear dysfunction (PMED) in children; however, clinical evolution varies considerably despite similar anatomical obstruction. This study aimed to identify inflammatory endotypes of chronic adenoiditis using unsupervised clustering and to evaluate [...] Read more.
Background and Objectives: Chronic adenoiditis is a major contributor to persistent middle ear dysfunction (PMED) in children; however, clinical evolution varies considerably despite similar anatomical obstruction. This study aimed to identify inflammatory endotypes of chronic adenoiditis using unsupervised clustering and to evaluate their association with PMED through mechanistic and predictive modeling. Materials and Methods: A retrospective cohort of 236 children (3–12 years) with chronic adenoiditis and otitis media with effusion was analyzed. Clinical, endoscopic, audiological, and hematologic inflammatory parameters (eosinophils, NLR, ELR, CRP, IgE) were included. K-means clustering identified inflammatory endotypes. Associations with PMED at six months were evaluated using multivariate logistic regression and mediation analysis. Predictive performance was compared using logistic regression, random forest, and gradient boosting models, with SHAP-based interpretability and decision curve analysis. Results: Three distinct endotypes were identified: eosinophilic (28%), neutrophilic (41%), and fibrotic–obstructive (31%). PMED occurred in 44% of the fibrotic endotype compared with 22% in the eosinophilic group (p < 0.001). In multivariate analysis, the fibrotic endotype independently predicted PMED (OR = 3.48, 95% CI 1.92–6.31), alongside PTA > 30 dB (OR = 2.91) and NLR > 3.5 (OR = 2.36). Mediation analysis showed that hearing impairment accounted for 34% of the effect of anatomical obstruction on persistence. Gradient boosting achieved superior discrimination (AUC = 0.90) and demonstrated the highest net clinical benefit. Conclusions: Chronic adenoiditis comprises biologically distinct inflammatory endotypes with differential risk of persistent middle ear dysfunction. Integrating inflammatory profiling with machine learning enhances mechanistic understanding and risk stratification, supporting precision-based management in pediatric otorhinolaryngology. Full article
(This article belongs to the Special Issue Update on Otorhinolaryngologic Diseases (3rd Edition))
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15 pages, 1861 KB  
Article
The Clinical Role of the Adenoid Microbiome in the Development of Adenoid Hypertrophy and Otitis Media with Effusion
by Oļegs Sokolovs-Karijs, Monta Brīvība, Dita Gudrā, Rihards Saksis, Annija Alise Zodāne, Maija Rozenberga, Laura Bunka, Anna Frigotto, Jana Osīte, Aigars Reinis, Gunta Segliņa and Angelika Krūmiņa
J. Clin. Med. 2026, 15(6), 2187; https://doi.org/10.3390/jcm15062187 - 13 Mar 2026
Viewed by 562
Abstract
Background: The adenoid surface serves as a potential bacterial reservoir for upper respiratory tract pathologies, including Adenoid Hypertrophy (AH) and Otitis Media with Effusion (OME). While dysbiosis is implicated in the pathogenesis of these conditions, it remains unclear whether the microbiome of children [...] Read more.
Background: The adenoid surface serves as a potential bacterial reservoir for upper respiratory tract pathologies, including Adenoid Hypertrophy (AH) and Otitis Media with Effusion (OME). While dysbiosis is implicated in the pathogenesis of these conditions, it remains unclear whether the microbiome of children with otitis media differs significantly from those with simple hypertrophy when compared against a healthy baseline. This study aimed to characterize the adenoid microbiome in children with adenoid hypertrophy with and without middle ear effusion, contrasting them with a healthy control group. Methods: We conducted a cross-sectional case–control study involving 58 pediatric participants divided into three groups: adenoid hypertrophy, adenoid hypertrophy and otitis media with effusion and healthy controls. Nasopharyngeal swabs were collected, and bacterial community composition was analyzed using 16S rRNA gene V4 sequencing. Alpha and beta diversity metrics, taxonomic composition, and differential abundance were evaluated. Results: Alpha diversity was significantly reduced in both disease groups compared to healthy controls (p < 0.001), indicating a collapse of microbial richness and evenness. Beta diversity analysis revealed a distinct separation between healthy and diseased cohorts; however, the microbial profiles of the AH and AH with OME groups were nearly identical. Taxonomic analysis demonstrated that disease was characterized by the depletion of health-associated commensals, specifically Veillonella, Actinomyces, and Gemella, and a concomitant expansion of Fusobacterium, Haemophilus, and Streptococcus. Conclusions: Adenoid hypertrophy is associated with a profound dysbiotic shift characterized by the loss of protective commensal flora and the dominance of pathobionts. The lack of significant microbial differentiation between the AH and AH with OME groups suggests that the adenoid surface acts as a centralized reservoir of dysbiosis, the composition of which is conserved regardless of the presence of middle ear effusion. These findings highlight the importance of restoring the commensal microbiome in the management of chronic adenoid disease. Full article
(This article belongs to the Section Otolaryngology)
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16 pages, 879 KB  
Case Report
A Diagnostic Dilemma: Concurrent Diagnosis of Cystic Fibrosis and Definitive Kabuki Syndrome Type 1
by Tatyana Vasilyeva, Nataliya Kashirskaya, Anna Mukhina, Anastasia Bobreshova, Yuliya Melyanovskaya, Olga Karpova, Dmitriy Kazakov, Andrey Marakhonov, Dmitry Pershin, Elena Kondratyeva, Kristina Mikhalchuk, Ekaterina Selina, Farida Sibgatullina, Almazia Shakirova, Zulfia Vafina, Anna Shcherbina and Rena Zinchenko
Int. J. Mol. Sci. 2026, 27(5), 2510; https://doi.org/10.3390/ijms27052510 - 9 Mar 2026
Viewed by 905
Abstract
The article presents a clinical case involving a patient with presumptive coexistence of two hereditary disorders, confirmed by molecular genetic analyses. Clinical evaluation of the proband, a 9-year-old girl, revealed features characteristic of Kabuki syndrome, including a typical “Kabuki makeup” facial phenotype, short [...] Read more.
The article presents a clinical case involving a patient with presumptive coexistence of two hereditary disorders, confirmed by molecular genetic analyses. Clinical evaluation of the proband, a 9-year-old girl, revealed features characteristic of Kabuki syndrome, including a typical “Kabuki makeup” facial phenotype, short stature, intracranial hypertension, and diffuse muscular hypotonia. Additional clinical findings included chronic right-sided otitis media, conjunctivitis, recurrent pneumonia, bilateral conductive hearing loss, astigmatism, and primary adenitis. Clinical assessment and molecular genetic testing were performed. High-throughput sequencing identified a previously reported pathogenic heterozygous variant in the KMT2D gene, NM_003482.4:c.15142C>T p.Arg5048Cys, and two known heterozygous variants in the CFTR gene: NM_000492.4:c.1521_1523delCTT p.Phe508del and c.3454G>C p.Asp1152His, classified as pathogenic and of variable clinical significance, respectively. Segregation analysis demonstrated that the KMT2D variant most likely arose in the proband de novo, whereas the CFTR variants were inherited from each of the parents. Notably, the proband’s clinically unaffected elder sister carried the same CFTR genotype. Based on the clinical presentation and molecular genetic findings, the diagnosis of Kabuki syndrome type 1 was conclusively established in the patient. Functional assessment of CFTR demonstrated its preserved function, which did not support a diagnosis of CF or CFTR-related disorders. Full article
(This article belongs to the Special Issue Genes and Human Diseases: 3rd Edition)
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23 pages, 3243 KB  
Article
Cost-Effectiveness of Infant Pneumococcal Conjugate Vaccination Strategies in Vietnam: A Stepwise Economic Evaluation
by Liping Huang, An Ta, Artem Antonov, Michael Groff and Phong Lan Nguyen
Vaccines 2026, 14(3), 220; https://doi.org/10.3390/vaccines14030220 - 27 Feb 2026
Viewed by 1357
Abstract
Background: Vietnam is one of few remaining countries without a pediatric pneumococcal National Immunization Program (NIP). However, four pneumococcal conjugate vaccines (PCVs) are available in Vietnam: 10-, 13-, 15-, and 20-valent PCVs (PCV10, PCV13, PCV15 and PCV20). Given the availability of multiple PCVs, [...] Read more.
Background: Vietnam is one of few remaining countries without a pediatric pneumococcal National Immunization Program (NIP). However, four pneumococcal conjugate vaccines (PCVs) are available in Vietnam: 10-, 13-, 15-, and 20-valent PCVs (PCV10, PCV13, PCV15 and PCV20). Given the availability of multiple PCVs, selecting an optimal vaccination strategy is challenging. This paper aims to estimate the vaccination impact of these PCVs, with and without the implementation of a pediatric NIP, to inform decision-makers and healthcare providers. Methods: A Markov model was adapted to evaluate the impact of all vaccines administered under a 3 + 1 schedule (50% vaccine uptake with direct protection assumed only) and a hypothetical scenario including PCVs 2 + 1 in Vietnam’s pediatric NIP (90% uptake with both direct and indirect protection) from a payer’s perspective. For each scenario, we performed stepwise comparisons of each vaccine with the next higher-valent option: PCV13 versus PCV10, PCV15 versus PCV13, and PCV20 versus PCV15. Results: Under the 3 + 1 schedule, PCV13 and PCV20 were cost-effective versus PCV10 and PCV15, respectively. PCV15, however, was not cost-effective versus PCV13, though offering greater health benefit but at a higher total cost. Under the 2 + 1 schedule, PCV13 remained cost-effective over PCV10, while PCV15 was not cost-effective relative to PCV13. PCV20 was dominant over PCV15. Sensitivity analyses demonstrated results consistent with both reference cases. Conclusions: Vaccinating infants in Vietnam through the private market or an NIP with PCV13 or PCV20 was estimated to be more cost-effective or cost saving than strategies based on PCV10 or PCV15, respectively. These findings provide valuable evidence to inform policy decisions. Full article
(This article belongs to the Special Issue Vaccines for the Vulnerable Population)
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18 pages, 1770 KB  
Article
Quality of Life Outcomes After Endoscopic Cholesteatoma Surgery: A Prospective Cohort Study
by Luana-Maria Gherasie, Viorel Zainea, Tamer Ebaied, Razvan Hainarosie, Corina Daniela Negrila, Andreea Rusescu, Irina-Gabriela Ionita and Catalina Voiosu
J. Clin. Med. 2026, 15(4), 1556; https://doi.org/10.3390/jcm15041556 - 16 Feb 2026
Viewed by 942
Abstract
Background: Cholesteatoma is a destructive middle ear lesion that compromises hearing and quality of life, for which endoscopic ear surgery (EES) has emerged as a minimally invasive alternative to microscopic approaches. While recurrence and audiological outcomes are frequently reported, patient-centered evaluations using validated [...] Read more.
Background: Cholesteatoma is a destructive middle ear lesion that compromises hearing and quality of life, for which endoscopic ear surgery (EES) has emerged as a minimally invasive alternative to microscopic approaches. While recurrence and audiological outcomes are frequently reported, patient-centered evaluations using validated patient-reported outcome measures (PROMs) remain limited. Objective: This study aimed to assess postoperative quality of life in patients undergoing exclusive endoscopic cholesteatoma surgery, using validated patient-reported outcome measures. Methods: We conducted a prospective observational cohort study in a tertiary referral center, enrolling 41 patients who underwent exclusive endoscopic cholesteatoma surgery over 20 months. Pre- and postoperative QoL was assessed using the Chronic Otitis Media Questionnaire-12 (COMQ-12) and the Glasgow Benefit Inventory (GBI). Results: COMQ-12 scores improved significantly from baseline (54.0 ± 4.2) to 12 months (10.2 ± 3.3; mean difference −43.8, 95% CI: −46.1 to −41.5; p < 0.001). GBI scores were consistently high, increasing from 82.6 ± 4.8 at 6 months to 84.1 ± 4.9 at 12 months (p < 0.001). Audiometric evaluation demonstrated a significant postoperative improvement, with the mean air–bone gap (ABG) decreasing from 52.1 ± 5.3 dB preoperatively to 26.4 ± 4.7 dB postoperatively (p < 0.001), indicating substantial closure of the conductive gap. Conclusions: Exclusive endoscopic cholesteatoma surgery yields robust QoL improvement, favourable hearing outcome, and recurrence rates similar to classic techniques at short-term evaluation. Full article
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14 pages, 2535 KB  
Case Report
Congenital External Auditory Canal Atresia in Two Dogs: Clinical Presentation, Diagnosis, and Surgical Management
by Mandalena Markou, Thomas Koutis, Konstantina Karagianni, Ioannis Panopoulos, Eugenia Flouraki and Vassiliki Tsioli
Pets 2026, 3(1), 11; https://doi.org/10.3390/pets3010011 - 10 Feb 2026
Viewed by 1042
Abstract
Congenital external auditory canal atresia (EACA) is a rare developmental anomaly in dogs with limited information to guide management. This report describes the clinical presentation, diagnostic work-up, surgical technique, and long-term outcome in two young dogs with unilateral congenital EACA. An 8-month-old Caucasian [...] Read more.
Congenital external auditory canal atresia (EACA) is a rare developmental anomaly in dogs with limited information to guide management. This report describes the clinical presentation, diagnostic work-up, surgical technique, and long-term outcome in two young dogs with unilateral congenital EACA. An 8-month-old Caucasian Shepherd and a 9-month-old Maltese presented with left-sided otalgia and absence of the external canal opening. Computed tomography identified segmental atresia of the vertical canal with intraluminal soft-tissue attenuating material and mild otitis externa and media in both dogs. Cytology and culture of canal contents were unremarkable, supporting a congenital, non-infectious origin. Both dogs underwent a canal-preserving vertical canal-to-external acoustic meatus anastomosis using a pull-through approach. Minor postoperative complications (partial wound dehiscence, mild canal stenosis) were successfully managed. At the 5-year and 1.5-year follow-up, respectively, both dogs remained free of clinical signs, with preserved hearing, supporting this procedure as a functional, cosmetically acceptable option in carefully selected dogs. Full article
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