Does the Location of a Small Tympanic Membrane Perforation Affect the Degree of Hearing Loss in Adult Patients with Inactive Mucosal Chronic Suppurative Otitis Media?

BACKGROUND: Tympanic membrane perforation due to inactive mucosal chronic suppurative otitis media is a common problem in otolaryngology, with consequent conductive hearing loss. Still, there is controversy about the relationship between the location of the tympanic membrane perforation and the degree of hearing impairment. AIM OF THE STUDY: To assess the correlation between the location of a small tympanic membrane perforation and the degree of conductive hearing loss in adult patients with inactive mucosal chronic suppurative otitis media. PATIENTS AND METHODS: A prospective cross-sectional study enrolled 74 adult patients with small tympanic membrane perforations (perforation involves less than one quadrant of the tympanic membrane) and conductive hearing loss (airbone gap ≥ 20 dB HL) due to inactive mucosal chronic suppurative otitis media for at least 3 months. The locations of the tympanic membrane perforations were classified as anterosuperior, anteroinferior, posterosuperior, and poster inferior perforations. Audiometric analysis and a CT scan of the temporal bone were done for all patients. The means of the air and bone conduction pure tone hearing threshold averages at frequencies 500, 1000, 2000, and 4000 Hz were calculated, and consequently, the air-bone gaps were calculated and presented as means. The ANOVA test was used to compare the means of the air-bone gaps, and the Scheffe test was used to determine if there were statistically significant differences regarding the degree of conductive hearing loss in relation to different locations of the tympanic membrane perforation. RESULTS: The ages of the patients ranged from 20 to 43 years (mean = 31.9 ± 6.5 years), of whom 43 (58%) were females and 31 (42%) were males. The means of the air-bone gaps were 32.29 ± 5.41 dB HL, 31.34 ± 4.12 dB HL, 29.87 ± 3.48 dB HL, and 29.30 ± 4.60 dB HL in the posteroinferior, posterosuperior, anteroinferior, and anterosuperior perforations, respectively. Although the air-bone gap's mean was greater in the posteroinferior perforation, statistical analysis showed that it was insignificant (P-value=0.168). CONCLUSION: In adult patients with inactive chronic suppurative otitis media, the anteroinferior quadrant is the most common location of the tympanic membrane perforation, and there was an insignificant correlation between the location of a small tympanic membrane perforation and the degree of conductive hearing loss.

Analysis of the effect of reconstructing the ossicular chain under otoendoscopy with and without a stapes superstructure.

BACKGROUND: Numerous studies have been conducted on the effect of the stapes superstructure after ossicular chain reconstruction, but the findings are not uniform. OBJECTIVE: To compare the hearing outcomes of ossicular chain reconstruction with partial ossicular replacement prosthesis (PORP) or total ossicular replacement prosthesis (TORP) under otoendoscopy. MATERIALS AND METHODS: The records of 111 patients diagnosed with chronic suppurative otitis media were retrospectively analyzed. These patients were divided into PORP group (n = 57) and TORP group (n = 54). They were further subdivided into subgroups PORP-a (with a malleus handle) and PORP-b (without a malleus handle), subgroups TORP-a and TORP-b. Pre- and postoperative audiometric results were analyzed. RESULTS: The mean postoperative air conduction hearing thresholds improvement, mean air-bone gap improvement, and the success rate of reconstruction were significantly higher in the PORP group than in the TORP group (p < .05). The mean postoperative air conduction hearing thresholds improvement and the success rate of reconstruction were significantly higher in the PORP-a group than in the TORP-a group (p < .05); and similar results were concluded in comparison of the PORP-b group and the TORP-b group. CONCLUSIONS AND SIGNIFICANCE: The stapes superstructure has an important positive effect on the postoperative outcome of endoscopic ossicular chain reconstruction.

Linear transmission between malleus and stapes in cases with incus necrosis.

OBJECTIVE: The outcome of cartilage interposition ossiculoplasty was assessed in cases of incus necrosis after posterior malleus repositioning in the plane of the stapes, in terms of hearing gain after ossicular reconstruction. METHODS: A retrospective observational study was conducted of 30 patients admitted to an Ain Shams University hospital from March 2021 to September 2021. All patients with ossicular disruption due to chronic suppurative otitis media and hearing loss of more than 40 dB were included in the study. Pure tone audiometry was conducted for each patient after three months, six months and one year post operation. RESULTS: The audiogram showed a post-operative air-bone gap of 20 dB or less in 83.33 per cent of patients (n = 25) at three months post-operatively and in 80 per cent of patients after six months; after one year, the results remained the same. CONCLUSION: The use of cartilage interposition after malleus posterior mobilisation represents an excellent partial ossicular replacement technique.

Children with otitis media in Greenland - A qualitative study of parental experiences.

INTRODUCTION: The Greenlandic population has one of the world's highest prevalence of otitis media (OM). Approximately 9-14% of all children suffer from OM during childhood. Due to the climate, lack of infrastructure, and minimal access to specialist services, the Greenlandic healthcare system operates under significant challenges. To support treatment implementation, we explored parental experiences of having a child with recurrent acute otitis media (rAOM) and chronic suppurative otitis media in Greenland (CSOM). METHODS: We applied a qualitative methodology with semi-structured interviews, to investigate parents' individual experiences. We included parents from six selected towns and settlements in Greenland, who were primary caregivers to minimum one child who had suffered from rAOM or CSOM. The interviews followed a semi-structured interview guide. RESULTS: Eight interviews were conducted with ten parents (nine mothers, one father) to 13 children (nine girls, four boys) aged two to 20 years (median age five years). We carried out a hermeneutic-phenomenological, Ricoeur-inspired text analysis of data. The first episode of OM was associated with uncertainty about the condition, including pain relief and treatment. However, recurrence led to symptom recognition and a changed disease perception among the parents: from being a simple case of childhood OM to a recognition of a chronic condition that might lead to delayed linguistic development and hearing impairment. CONCLUSION: Under difficult healthcare situations, parents represented a unique resource in care and treatment implementation. Parents often feel alone with the responsibility of care and had concerns for their child's hearing and language development, and they wished for their experiences and observations to be actively included in consultations.

Association of iron deficiency with chronic suppurative otitis media in adults.

BACKGROUND: Chronic suppurative otitis media (CSOM) is a prevalent chronic inflammatory disease globally. Current research suggests a possible association between anaemia and the development of CSOM. OBJECTIVES: The objective of this trial was to investigate the relationship between iron metabolism and chronic suppurative otitis media (CSOM) in adults aged 20-60 years. MATERIALS AND METHODS: A consecutive sampling case-control study was used. The study participants were divided into a case group (42 children diagnosed with CSOM) and a control group (42 children with normal ears). Haemoglobin (Hb), Hematocrit (Hct), mean corpuscular volume of erythrocytes (MCV), serum iron level (SI), unsaturated iron-binding capacity (UIBC), total iron-binding capacity (TIBC), transferrin (TF), ferritin (Fer) were tested in all the participants, and the results were compared with the normal ranges of the World Health Organization (WHO). The comparative analysis of cases and controls was performed using the Fisher extract test, independence t-test, or Mann-Whitney U test. p-value <.05 was considered statistically significant for correlation. RESULTS: There were 61 patients with CSOM and 61 controls included in the study. In the case group, 16 out of 61 patients (26.2%) had low ferritin levels and in the control group, 1 out of 61 patients (1.6%) had low ferritin levels (p < .001). In the case group, 6 (9.8%) of 61 patients had IDA, and in the control group, there were no patients with IDA among 61 patients (p = .027). There were significant differences in SI, UIBC, and Fer parameters between the groups. CONCLUSIONS: In adult patients, the incidence of iron deficiency was higher in CSOM patients than in controls. Iron deficiency may be considered a potential risk factor for chronic suppurative otitis media, and serum iron parameters should be evaluated in these CSOM patients and further studies should be conducted to better understand the potential link between iron deficiency and CSOM.

Janus mesoporous organosilica/platinum nanomotors for active treatment of suppurative otitis media.

We report a Janus mesoporous organosilica/platinum (MOS/Pt) nanomotor for active targeted treatment of suppurative otitis media, as a new type of multi-functional ear drop. The efficient propulsion of MOS/Pt nanomotors in hydrogen peroxide ear-cleaning drops significantly improves their binding efficiency with Staphylococcus aureus and enhances their antibacterial efficacy.

Dizziness in adults with chronic otitis media at two otology referral centres in Colombia: a cross-sectional study in a middle-income country.

OBJECTIVE: This study aimed to determine the prevalence of dizziness and its associated factors in patients with COM at two otologic referral centres in a middle-income country. DESIGN: Cross-sectional study. Adults with and without COM diagnosis from two otology-referral centres in Bogotá (Colombia) were included. Dizziness and quality of life were assessed using the "Chronic Suppurative Otitis Media Questionnaire-12" (COMQ-12), and sociodemographic questionnaires were applied. Otoscopic evaluation and audiometric data were collected. STUDY SAMPLE: A total of 231 adults. RESULTS: Of the 231 participants, up to 64.5% (n = 149) reported at least mild inconvenience due to dizziness. Factors associated with dizziness included female sex (aPR: 1.23; 95% CI: 1.04-1.46), chronic suppurative otitis media (aPR: 3.02; 95% CI: 1.21-7.52), and severe tinnitus (aPR: 1.75; 95% CI: 1.24-2.48). An interaction was found between socioeconomic status and educational level, with more frequent reports of dizziness in the middle/high economic status and secondary education (aPR: 3.09; 95% CI: 0.52-18.55; p < 0.001). Differences of 14 points in symptom severity and 18.5 points in the total score of the COMQ-12 were found between the groups with dizziness and without dizziness. CONCLUSIONS: Dizziness was frequent in patients with COM and was associated with severe tinnitus and quality of life deterioration.

Risk factors associated with the development of chronic suppurative otitis media in children: Systematic review and meta-analysis.

OBJECTIVES: Chronic suppurative otitis media (CSOM) is defined as persistent discharge through a tympanic membrane perforation for greater than 2 weeks. It is associated with a significant disease burden, including hearing loss, and reducing its incidence could significantly improve short- and long-term health. We aimed to identify risk factors associated with the development of CSOM in children. DESIGN AND SETTING: Systematic review and meta-analysis of studies set in community, primary and secondary care settings, identified from Medline, Embase and Cochrane databases from 2000 to 2022. PARTICIPANTS: Children 16 years old and below. MAIN OUTCOME MEASURES: Clinical diagnosis of CSOM. RESULTS: In total, 739 papers were screened, with 12 deemed eligible for inclusion in the systematic review, of which, 10 were included in the meta-analysis. Risk factors examined included perinatal, patient, dietary, environmental and parental factors. Meta-analysis results indicate that atopy (RR = 1.18, 95% CI [1.01-1.37], p = .04, 2 studies); and birth weight <2500 g (RR = 1.79 [1.27-2.50], p < .01, 2 studies) are associated with an increased risk of CSOM development. Factors not associated were male sex (RR = 0.96 [0.82-1.13], p = .62, 8 studies); exposure to passive smoking (RR = 1.27 [0.81-2.01], p = .30, 3 studies); and parental history of otitis media (RR = 1.14 [0.59-2.20], p = .69, 2 studies). CONCLUSION: Optimal management of risk factors associated with CSOM development will help reduce the burden of disease and prevent disease progression or recurrence. The current quality of evidence in the literature is variable and heterogeneous. Future studies should aim to use standardised classification systems to define risk factors to allow meta-analysis.

Tympanomastoidectomy versus parenteral antibiotic therapy for pediatric otorrhea.

OBJECTIVE: To evaluate the efficacy of tympanomastoidectomy versus parenteral antibiotic therapy for otorrhea as a result of chronic suppurative otitis media (CSOM) without cholesteatoma in the pediatric population. METHODS: A retrospective review of 221 patients treated for otorrhea at a tertiary academic pediatric hospital was performed to evaluate the impact of tympanomastoidectomy versus parenteral antibiotic therapy on resolution of otorrhea. Inclusion criteria were age 0-18 years, prior treatment with otic and/or oral antibiotic, prior history of tympanostomy tube placement for recurrent otitis media, history of otorrhea, treatment with tympanomastoidectomy or parenteral antibiotic therapy, and follow-up of at least 1 month after intervention. Time to resolution was compared between the two modalities adjusting for age, bilateral ear disease status, and comorbidities using a Cox proportional hazard model. RESULTS: Eighty-three ears from 58 children met the inclusion criteria. Ears that initially underwent tympanomastoidectomy had a significantly shorter time to resolution of symptoms (median time to resolution) 9 months (95 % confidence interval CI: 6.2-14.8) vs. 48.5 months (95 % lower CI 9.4, p = 0.006). On multivariate analysis, however, only bilateral ear disease status was independently associated with time to resolution of symptoms (hazard ratio 0.4, 95 % CI 0.2-0.9, p = 0.03). There was no statistically significant difference in the rate of treatment-related complications when comparing tympanomastoidectomy to parenteral antibiotic therapy (p = 0.37). CONCLUSION: When adjusting for age, bilateral ear disease status, and comorbidities, there does not appear to be a significant difference in time to resolution of symptoms when comparing parenteral antibiotic therapy to tympanomastoidectomy. An informed discussion regarding risks and benefits of each approach should be employed when deciding on the next step in management for patients with CSOM who have failed more conservative therapies.

Las biopelículas y su interrelación con la patología crónica del oído medio / Biofilms and their relationship with chronic middle ear pathology

El concepto de biopelículas ha surgido de forma paulatina durante un largo período; se presentan como estructuras tridimensionales compuestas por células sésiles de microorganismos que crecen y se adhieren irreversiblemente a superficies, tanto vivas como inertes. Su capacidad de desarrollarse, tanto en superficies bióticas como abióticas, es una característica que los relaciona directamente con la salud humana. Distintas infecciones óticas se han inculpado a la presencia de biopelículas en las mucosas como en la otitis media con efusión, de igual forma se manifiestan en la aparición y persistencia de la otitis media crónica. Las biopelículas afines con otitis media, generalmente, contienen uno o múltiples especies de bacterias otopatógenas primarias. La comprensión de la biopelicula auxiliará el progreso de nuevas terapias y estrategias de control, al evitar enfermedades infecciosas ya que las bacterias formadoras de biopelículas son una seria amenaza para la salud pública debido a su alta resistencia a los antimicrobianos.

The concept of biofilms has emerged gradually over a long period; they appear as three-dimensional structures composed of sessile cells of microorganisms that grow and adhere irreversibly to surfaces, both living and inert. Their ability to develop, both on biotic and abiotic surfaces, is a characteristic that directly relates them to human health. Different ear infections have been blamed on the presence of biofilms on the mucous membranes, such as otitis media with effusion, in the same way they manifest themselves in the appearance and persistence of chronic otitis media. Otitis media-related biofilms generally contain one or multiple species of primary otopathogenic bacteria. The understanding of the biofilm will help us refine new therapies and control strategies, by avoiding infectious diseases since biofilm-forming bacteria are a serious threat to public health due to their high resistance to antimicrobials.

[Acute purulent otitis media in children]. / Ostryi gnoinyi srednii otit u detei.

OBJECTIVE: Improving the effectiveness of inpatient care for children with acute purulent otitis media. MATERIAL AND METHODS: 100 children at the age from 0 to 18 years were inspected from January to August 2021. The main diagnostic methods included otoscopy, pharyngoscopy, rhinoscopy. Bacteriological examination of the pus from the ear was done for all patients. RESULTS: Acute purulent otitis media is a common cause of hospitalization in children aged 0 to 3 years. The main causative agents of the disease in toddlers are Staphylococcus aureus and pneumococcus (38%), in preschoolers and primary school children - pyogenic streptococcus and pneumococcus (30%), in high school students - Staphylococcus aureus.

Effect of eardrum perforation and chronic otitis media on the results of infrared tympanic thermometer in adults: A systematic review and meta-analysis.

BACKGROUND: This study was conducted to determine whether tympanic membrane perforation or chronic otitis media affects the results of an infrared tympanic membrane thermometer in adults. METHODS: A literature search was performed using PubMed, Embase, Cochrane Library, Web of Science, and Google Scholar. RESULTS: Four nonrandomized studies were included in the analysis. The temperatures of the bilateral eardrums (one eardrum with normal condition [control group] and the other eardrum with perforation or chronic otitis media [experimental group]) were measured for the same subject in the studies. The mean and standard deviation of the bilateral tympanic membrane temperatures were used to calculate the mean difference (MD) with a corresponding 95% confidence interval (CI). The fixed-effect model was utilized based on the results of the heterogeneity measurement using the Chi2 test and I2 statistic. The results of a meta-analysis in the normal eardrum (control group) and perforated eardrum, chronic suppurative otitis media with tympanic membrane perforation, or chronic otitis media with cholesteatoma (experimental group) were 343 subjects (MD = 0.05; 95% CI = -0.00 to 0.11; P = .06). A meta-analysis of the normal eardrum (control group) and perforated eardrum or chronic suppurative otitis media with tympanic membrane perforation except for cholesteatoma (experimental group) found 296 subjects (MD = 0.05; 95% CI = -0.01 to 0.11; P = .10). CONCLUSION: When the temperatures of the bilateral eardrums were measured using an infrared tympanic membrane thermometer, no difference was observed between the eardrum with perforation or chronic otitis media and the normal eardrum.

[Bacterial microbiota in exacerbation of chronic purulent otitis media in children]. / Bakterial'naya mikrobiota pri obostrenii khronicheskogo gnoinogo srednego otita u detei.

OBJECTIVE: To study current spectrum of bacterial pathogens that cause exacerbation of chronic suppurative otitis media (CSOM) in children, who live in Moscow region, and to investigate sensitivity of isolated strains to various antibacterial drugs. MATERIAL AND METHODS: The results of microbiome's bacterial cultivation of purulent discharge from tympanic cavities collected from 269 children with CSOM aged from 1.5 to 18 years for the period from 2017 to 2021 yr. were analyzed. The majority of examined subjects (70.6% from 190 children) had CSOM with cholesteatoma. RESULTS: Monoculture was received in 62.5% of examined patients, bacterial associations - in 25.7%, bacterial-fungal associations - in 2.6%, and there was no growth in 9.2% of subjects. Staphylococcus aureus, which was found in 36.1% of children, dominated among agents. Pseudomonas aeruginosa was the second most frequently diagnosed agent, revealed in 12.3% of patients. Candida spp. (7.1%) was prevalent in bacterial-fungal associations. The article presents the results of isolated strains' sensitivity to antibacterial drugs. The high resistance to oxacillin, cefoxitin and antipseudomonal drugs was found among strains collected from children with CSOM and cholesteatoma. CONCLUSION: S. aureus (36.1%) and P. aeruginosa (12.3%) remain the most common causative agents for exacerbation of chronic suppurative otitis media in children. Pathogenic fungi are not isolated separately, and Candida spp. (6.7%) dominates in bacterial-fungal associations. It is generally recognized and confirmed by our research, that topical fluoruquinolones (ciprofloxacin) are the most effective drugs for exacerbation of chronic suppurative otitis media treatment. Systemic antibiotics, of which fluoruquinolones (ciprofloxacin) are the most effective, are recommended in severe exacerbation, severe and destructive forms of chronic suppurative otitis media.

Bacteriological Profile and Drug Susceptibility in Mucosal type Chronic Suppurative Otitis Media.

BACKGROUND: In Chronic Suppurative Otitis Media, mucosal type, most common organisms are Pseudomonas aeruginosa and Proteus species (P. mirabilis and P. vulgaris). It is important to prescribe culture-directed antibiotics to prevent resistance. This study was conducted to determine the bacteriological profile and drug susceptibility in patient with chronic suppurative otitis media. METHODS: This is a hospital-based descriptive study done at Gandaki Medical College, Pokhara, Nepal from July 2019 to June 2020. Under aseptic condition, the swab specimens were obtained from patients with history of ear discharge of >12 weeks duration and findings central perforation of the tympanic membrane. The sample was labeled and immediately transferred to the microbiology lab for culture/sensitivity test according to the guidelines of the Clinical and Laboratory Standards Institute. RESULTS: Out of total 127 patients, 48 (37.8%) were male and 79 (62.2%) were female. One hundred and seven samples (84.3%) had positive culture while 20 samples (15.7%) had no growth. Staphylococcus aureus (43%), was the most common isolate followed by Pseudomonas aeruginosa (23.4%), Proteus mirabilis (9.3%), and Escherichia coli (8.4%). All the organisms isolated were 100% sensitive to imipenem followed by 96.2% sensitive to gentamicin and 95.3% to amikacin. CONCLUSIONS: Staphylococcus aureus (43%) was the most predominant isolate followed by Pseudomonas aeruginosa (23.4%), Proteus mirabilis (9.3%), and Escherichia coli (8.4%). Imipenem was the most sensitive antibiotic (100%) followed by gentamicin (96.2%), amikacin (95.3%), and ofloxacin (88.78%).

ABO blood type correlates with risk and protective factors for chronic suppurative otitis media.

BACKGROUND: ABO blood type associated with differentiated onset of infectious diseases. AIMS/OBJECTIVE: To investigate whether people with different blood types were vulnerable in developing chronic otitis media (CSOM) and if the risk and protective factors varied among them. MATERIAL AND METHODS: The study was a case-control study that included 206 participants in the case group and 210 in the control group. Stratified analysis for blood type was adopted. RESULTS: Patients with different blood types were insignificantly different in the incidence of CSOM. Upper respiratory tract infection (URTI, OR = 21.81, 95% CI: 4.80-99.06), socioeconomic status (OR = 3.02, 95% CI: 1.35-6.74), and were risk factors in blood type A. In blood type B, smoking and urban residence were risk factors. The OR (95% CI) were 11.42 (2.77-47.08), and 0.14 (0.03-0.65). Urban residence, BMI and blood calcium increase, male gender were protective factors for different blood types. CONCLUSIONS AND SIGNIFICANCE: Our study identified the risk and protective factors for CSOM among different blood types. The findings might provide new insights into taking precautions against CSOM in people of different blood types.

Current trends on subtotal petrosectomy with cochlear implantation in recalcitrant chronic middle ear disorders.

Objective: To establish the safety and effectiveness of subtotal petrosectomy with cochlear implantation in patients affected by chronic middle ear disorders to refractory to previous surgical treatments. Methods: A multicentre, retrospective study was conducted on patients affected by recalcitrant chronic middle ear disorders who underwent cochlear implantation in combination with subtotal petrosectomy. Patients' details were collected from databases of 11 Italian tertiary referral centres. Additionally, a review of the most updated literature was carried out. Results: 55 patients were included with a mean follow-up time of 44 months. Cholesteatoma was the most common middle ear recurrent pathology and 50.9% of patients had an open cavity. 80% of patients underwent a single stage surgery. One case of explantation for device failure was reported among the 7 patients with post-operative complications. Conclusions: Subtotal petrosectomy with cochlear implantation is a benchmark for management of patients with recalcitrant chronic middle ear disorders. A single stage procedure is the most recommended strategy. Optimal follow-up is still debated. Further studies are required to investigate the role of this surgery in paediatric patients.

Pertinence of Streptococcus anginosus group in intracerebral abscesses in the era of extended antibiotic resistance.

AIMS: • To study the incidence of Streptococcus anginosus group (SAG) in pyogenic or community acquired intra cerebral abscess. • To understand the risk factors for the same. • To analyze the specific radiological features and clinical outcome after surgery and antibiotic therapy. METHODS: This is a retrospective observational study of case series over a period of one year. Patients diagnosed with intracerebral abscess were included in the study. Pus collected from were received in the laboratory and processed according to the standard protocols. Data regarding the clinical findings and demographics were collected from medical records. FINDINGS: A total of 202 samples were studied. 103 were found to be pyogenic. SAG were isolated from 21 samples (20.38%) and all the isolates were sensitive to Penicillin. Age of the patients ranged from 18months to 68years. Male preponderance was noted with male to female ratio of 4:1. Otogenic infections were the most common predisposing factors and focus of infection could not be ascertained in 5 patients. All patients were treated with surgical intervention and antibiotics (Vancomycin, Amikacin and Metronidazole) for 6 weeks and recovery was remarkable. One patient succumbed to the illness. CONCLUSION: SAG can be an aggressive pathogen with propensity for abscess formation. Chronic Suppurative Otitis Media (CSOM) is still a major cause of intracerebral abscess in developing country like India which is a benign and curable disease and should not be neglected. Injudicious use of antibiotics and negligence regarding the dose and duration of therapy from both patients and health care providers is the major cause for common infections to become more difficult to treat and succumbing to complications.

Polymicrobial Bacterial Meningitis in a Patient with Chronic Suppurative Otitis Media: Case Report and Literature Review.

Polymicrobial meningitis is a rare entity in the adult population, especially in the antibiotic era. However, disorders such as chronic suppurative otitis media (CSOM) or even poor oral hygiene are considered risk factors for the development of such cerebral infection. We report a case of polymicrobial meningitis associated with oto-mastoiditis in a 64-year-old female patient known to have CSOM. The patient presented atypical symptoms for community-acquired meningitis, showing subacute evolution of headache, without fever or neck stiffness. The aerobe microorganisms Streptococcus anginosus and Corynebacterium spp., sensitive to beta-lactamines, and the anaerobe Prevotella spp., resistant to penicillin and metronidazole, were isolated from CSF specimens, while Proteus mirabilis and Enterococcus faecalis were identified from the ear drainage. The diversity of pathogens identified in our case led us to the hypothesis of two different sources of meningitis: otogenic and/or odontogenic. Favorable evolution was obtained after a multi-disciplinary approach, combining surgery and broad-spectrum antibiotics. In addition, we performed a literature review that highlights the low incidence of polymicrobial mixed aerobe-anaerobe meningitis.