Sensorineural Hearing Loss In Patients Research Articles

Prognostic changes after sudden deafness in patients with inner ear malformations characterized by LSCC: a retrospective study.

This study aimed to investigate the clinical features and prognosis of sudden sensorineural hearing loss in patients with lateral semicircular canal (LSCC) malformation. This study enrolled patients with LSCC malformation and sudden sensorineural hearing loss (SSNHL) who were admitted to Shandong ENT Hospital between 2020 and 2022. We collected and analyzed data on examinations of audiology, vestibular function, and imaging records of patients and summarized the clinical characteristics and prognosis of these patients. Fourteen patients were enrolled. Patients with LSCC malformation was noted in 0.42% of all SSNHL cases during the same period. One patients had bilateral SSNHL and the rest had unilateral SSNHL. Of them, eight and six patients had unilateral and bilateral LSCC malformations, respectively. Flat hearing loss was noted in 12 ears (80.0%) and severe or profound hearing loss was noted in 10 ears (66.7%). After treatment, the total efficacy rate of SSNHL with LSCC malformation was 40.0%. Vestibular function was abnormal in all patients, but only five patients (35.7%) had dizziness. There were statistically significant differences in the vestibular functions between patients with LSCC malformation and matched patients without the malformation hospitalized during the same period (p < 0.05). Patients with SSNHL and LSCC malformation had flat-type and severe hearing loss and worse disease prognosis compared to those with SSNHL without LSCC malformation. Vestibular function is more likely to be abnormal; however, there was no significant difference in vestibular symptoms between patients with and without LSCC malformation. LSCC is a risk factor for the prognosis of SSNHL.

Effects of Oral Steroids Combined with Postauricular Steroid Injection on Patients with Sudden Sensorineural Hearing Loss with Delaying Intervention: A Retrospective Analysis.

In the otology clinic, we often receive some sudden sensorineural hearing loss (SSNHL) patients accompanied by annoying tinnitus, who usually visited over three weeks after the onset. Nevertheless, due to the high treatment cost and relatively low cure rate, there are still great disputes about hospitalization or not for these patients. Aim: This study aimed to perform a retrospective analysis for analyzing the efficacy of treatment with oral steroids combined with postauricular steroid injection in patients with delaying effective treatment. A total of 157 eligible SSNHL patients with delaying effective treatment over three weeks were enrolled in this study. According to different treatment methods of oral steroids with or without postauricular steroid injection, these patients were divided into three groups: PO (prednisone oral) group, PSI (prednisone oral and postauricular steroid injection) group, and PII (prednisone oral and postauricular lidocaine injection) group. The changes in level of hearing, mean subjective tinnitus loudness, and side effects were analyzed in the three groups. Hearing improvement and tinnitus remission were all observed in three groups after treatment. Compared with PO and PII groups, those patients in PSI groups had more improvement in level of hearing and mean subjective tinnitus. The level of tinnitus loudness was statistically significantly correlated with the level of PTA both before treatment and after treatment. Oral steroids combined with postauricular steroid injection should be employed for treatment of SSNHL patients with delaying effective treatment over three weeks.

Radiation dose to the cochlea and its association with sensorineural hearing loss in head and neck cancer-A prospective study

AimTo determine the effect of cochlear dose on sensorineural hearing loss in patients with head and neck cancer treated by radiotherapy and chemoradiotherapy. Materials and methodA two-year longitudinal study was conducted on 130 subjects with various head and neck malignancies who were receiving radiotherapy or chemoradiation. 56 patients received only radiotherapy while 74 patients received concurrent chemoradiation five days a week at a dose of 66–70 Gy. They were categorized as having a radiation dose to the cochlea of <35 Gy, <45 Gy or >45 Gy. Pre- and post-therapy audiological evaluation was done using a Pure-tone audiogram, distortion product otoacoustic emission, and impedence. Hearing thresholds were measured at frequencies up to 16,000 Hz. ResultsOut of 130 patients 56 received RT alone and 74 received CTRT. There was statistically significant (p value <0.005) difference in Pure-tone audiometry assessment in both the RT and CTRT groups between subjects who received more than and <45 Gy of radiation to the cochlea. There was no significant difference in distortion product otoacoustic emission assessment between patients who received >45 Gy and <45 Gy radiation to the cochlea. Comparison between subjects who received radiation dose of <35 Gy and >45 Gy revealed significant results in the degree of hearing loss (p value <0.005). ConclusionWe observed that patients who received >45 Gy of radiation had more sensorineural hearing loss compared to patients who received <45 Gy. A cochlear dose of <35 Gy is associated with significantly lower hearing loss compared to higher doses. We would like to conclude by emphasizing the importance of regular audiological assessments prior to and post radiotherapy and chemoradiotherapy, with regular follow-ups encouraged over a longer period to improve the quality of life in patients with head and neck malignancy.

ASSESSMENT OF SENSORY-NEURAL HEARING LOSS IN PATIENTS WITH CONTROLLED V/S UNCONTROLLED DIABETES MELLITUS

Aim- To study the prevalence of Sensorineural Hearing Loss in patients with Diabetes Mellitus and to compare the degree and severity of hearing loss in patients with diabetes controlled on medications with uncontrolled disease Methodology- Prospective observational study was conducted to assess prevalence of sensory-neural hearing loss in patients with diabetes mellitus attending ENT OPD at GRMC Gwalior, Madhya Pradesh, India from December 2020 to May 2022. Auditory function was measured with Pure Tone Audiometry (PTA) Among 280 patients with Diabetes mellitus, Results- 184 patients had Sensory-neural hearing loss (65.70%). As the disease duration increased above 10 years, incidence of SNHL increased to 88.4% in both ears. Sensorineural hearing loss is Conclusionprevalent in 65.71% of type II diabetic patients. Sensorineural hearing loss in diabetes mellitus is usually gradually progressive involving high frequency thresholds. Hearing threshold increases with advanced age and increased duration of diabetes. Patients with poor control [HbA1c greater than 8.5%] of their glycemic status had raised auditory thresholds.

Magnitude and factors associated with sensorineural hearing loss in patients with HIV/AIDS attending tertiary hospital in northern zone Tanzania

Background: It is estimated that 20% to 50% of patients with HIV have hearing loss. 70% of people living with HIV worldwide are reported to be in Sub-Saharan Africa, making this region have a probable greater disease burden. However, hearing assessment is missing as a routinely conducted investigation in some treatment guidelines. The study aimed to determine the magnitude and factors associated with sensorineural hearing loss in patients with HIV/AIDS attending a tertiary hospital in Northern Tanzania. Methods: This observational hospital-based cross-sectional study was conducted at the HIV outpatient clinics. The study population comprised children and adults with HIV/AIDS aged between 7 and 60 years old. A structured questionnaire and medical files were used to obtain hearing history and relevant medical information. Tympanometry and pure-tone audiometry was done. Results: This study included 152 study participants. The median age was 46 (36.0 – 53.0) years. 109 (71.7%) were females, and 43 (28.3%) were males. The prevalence of sensorineural hearing loss (SNHL) was 34.9% (53 cases). Conductive hearing loss was 7.2% (11 cases,) and mixed hearing loss was 9.2% (14 cases). There was a statistically significant association between SNHL with nadir CD4 count, current viral load, and ART use duration of more than 10 years. Conclusions: The magnitude of SNHL in patients with HIV/AIDS is alarmingly high. Hearing status should be assessed at baseline and follow-up course of HIV/AIDS management. This will also help analyse the probable impact of ART changes in the treatment guidelines.

Sudden Sensorineural Hearing Loss in a Patient with COVID-19: A Case Report

Background: Several viral infections may lead to hearing loss. It›s still unknown whether COVID-19 has effects on the auditory system or not. In this regard, to evaluate the possibility of sudden sensorineural hearing loss due to COVID-19, this study aimed to report sudden sensorineural hearing loss (SSNHL) in patients with COVID-19 in Iran. Case Report: The patient was a 7-year-old girl diagnosed with COVID-19 and sensorineural hearing loss. An audiogram revealed normal hearing in the right ear and severe sensorineural hearing loss in the left ear. The tympanometry test result was bilateral type A. The treatment started with prednisolone (1 mg/kg/d). The audiogram of follow-up pure-tone audiometry did not reveal any improvement. Conclusion: SSNHL appears to be a possible complication of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. COVID-19 infection could have deleterious effects on cochlear hair cells and eight nerve functions. Therefore, audiological monitoring should be initiated in patients presenting with COVID-19.

Analysis of sensorineural hearing loss in patients attending an otolaryngology clinic in North Central Nigeria.

Hearing loss is the third leading cause of years lived with disability. Approximately 1.4 billion people have hearing loss, of which 80% reside in low- and middle-income countries with limited audiology and otolaryngology care available to them. The objective of this study was to estimate period prevalence of hearing loss and audiogram patterns of patients attending an otolaryngology clinic in North Central Nigeria. A 10-year retrospective cohort study was carried out analyzing 1507 patient records of pure tone audiograms of patients at the otolaryngology clinic at Jos University Teaching Hospital, Plateau State, Nigeria. Prevalence of hearing loss of moderate or higher grade increased significantly and steadily after age 60. Compared to other studies, there was a higher prevalence of overall sensorineural hearing loss (24-28% in our study compared to 1.7-8.4% globally) and higher proportions of the flat audiogram configuration among the younger age patients (40% in younger patients compared to 20% in patients older than 60 years). The higher prevalence of the flat audiogram configuration compared to other parts of the world may be suggestive of an etiology specific to this region, such as the endemic Lassa Fever and Lassa virus infection in addition to cytomegalovirus or other viral infections associated with hearing loss.

The Expression Levels of MicroRNAs Differentially Expressed in Sudden Sensorineural Hearing Loss Patients' Serum Are Unchanged for up to 12 Months after Hearing Loss Onset.

Sudden sensorineural hearing loss (SSNHL) is an acquired idiopathic hearing loss. Serum levels of small, non-coding RNAs and microRNAs (miRNAs) miR-195-5p/-132-3p/-30a-3p/-128-3p/-140-3p/-186-5p/-375-3p/-590-5p are differentially expressed in SSNHL patients within 28 days of hearing loss onset. This study determines if these changes persist by comparing the serum miRNA expression profile of SSNHL patients within 1 month of hearing loss onset with that of patients 3-12 months after hearing loss onset. We collected serum from consenting adult SSNHL patients at presentation or during clinic follow-up. We matched patient samples drawn 3-12 months after hearing loss onset (delayed group, n = 9 patients) by age and sex to samples drawn from patients within 28 days of hearing loss onset (immediate group, n = 14 patients). We compared the real-time PCR-determined expression levels of the target miRNAs between the two groups. We calculated the air conduction pure-tone-averaged (PTA) audiometric thresholds in affected ears at the initial and final follow-up visits. We undertook inter-group comparisons of hearing outcome status and initial and final PTA audiometric thresholds. There was no significant inter-group difference in miRNA expression level, hearing recovery status and initial and final affected ear PTA audiometric thresholds.

Analysis of etiopathogenetic factors in the development and progression of perceptual hearing loss

Relevance: Sensorineural deafness is a polyetiological disease. The most studied etiopathogenesis factors are vascular, acoustic and age. Despite numerous studies, the factors of the development and progression of chronic sensorineural hearing loss, as well as tinnitus, remains unclear in 25-30% of cases. Purpose: to determine the most influential factors in the development and progression of sensorineural hearing loss in patients who work in conditions of increased sound load. Methods and materials: The study was conducted on the basis of the Kyiv Clinical Hospital on Railway Transport No. 2, as a division of the Department of Otolaryngology of the O.O. Bogomolets National Medical University. We conducted an examination of 678 patients who work under conditions of increased acoustic load (drivers, drivers' assistants, fitters, railway track fitters) with the aim of identifying perceptual disorders and analyzing the etiopathogenesis factors of chronic sensorineural hearing loss. Further examinations were carried out in 89 patients who had perceptual disorders. Results: The first degree of deafness was detected in 75.3% of patients, the second and third - in 12.35% each. The largest number was made up of patients aged 56 to 65 years, but even among those examined up to 45 years of age, there were 2 cases of third-degree hearing loss. The correlation between age and the degree of deafness in patients with perceptual disorders, as well as age and decreased whisper perception was weakly positive: 0.167 and 0.261, respectively; The relationship between indicators of work experience and the degree of hearing loss, as well as work experience and a decrease in the perception of whispered speech – the average degree of severity is 0.382 and 0.476, respectively. These data were confirmed with the help of two-factor analysis. Conclusions: Among patients with perceptual disorders who work in conditions of increased sound load, the largest number was aged 56-65 with more than 30 years of experience and had the first degree of hearing loss. The relationship between hearing impairment and age and work experience was found to be weak and medium, respectively. 11.1% of cases of third-degree hearing loss were found among patients under 45 years of age and with a work experience of up to 30 years. This may indicate the presence of other factors in them, for example, genetic disorders, which significantly affect the development and progression of sensorineural hearing loss and require further research.

Sudden Sensorineural Hearing Loss Is Related to Endothelial Progenitor Cells and Lipoprotein-Associated Phospholipase A2.

This study aimed to investigate the correlation between lipoprotein-associated phospholipase A2, endothelial progenitor cells, and sudden sensorineural hearing loss. The number of endothelial progenitor cells and lipoprotein-associated phospholipase A2 levels collected from peripheral blood samples were measured and compared between sudden sensorineural hearing loss group and control group. The number of endothelial progenitor cells was reduced in sudden sensorineural hearing loss group compared to control group (38.88 ± 10.73 in sudden sensorineural hearing loss group vs. 77.14 ± 8.56 in control group, P <.01). The lipoprotein-associated phospholipase A2 level was markedly increased in sudden sensorineural hearing loss group compared to control group (244.94 ± 59.547 in sudden sensorineural hearing loss group vs. 189.00 ± 50.987 in control group, P <.05). The number of endothelial progenitor cells was decreased and lipoprotein-associated phospholipase A2 levels were increased in sudden sensorineural hearing loss patients. Changes in the number of endothelial progenitor cells and lipoprotein-associated phospholipase A2 levels may be involved in the pathogenesis of sudden sensorineural hearing loss.

Sensorineural Hearing Loss in Patients with Long-COVID-19: Objective and Behavioral Audiometric Findings.

The symptoms of COVID-19 are primarily respiratory system disorders. Sensorineural hearing loss can be caused by COVID-19, as other symptoms in the nervous system. Hearing loss may also be the only symptom or complication of this disease or the symptoms of long COVID-19. The study aimed to assess hearing in patients after COVID-19 infection. The study conducted ENT and full hearing assessment in COVID-19 infection. All patients underwent complete audiological diagnostics, including threshold tonal audiometry, tympanometry, otoacoustic emissions, and auditory brainstem evoked potentials (ABR) tests. The study group included 58 patients aged 23 to 75 years who were diagnosed with COVID-19 infection six months before inclusion in the present study and reported post-COVID-19 hearing impairment. There were statistically significant differences between the control and study groups. Sensorineural hearing loss was found in 65.5% of the tonal audiometry test. The stapes reflex was absent in almost 20% of post-COVID-19 patients. The analysis of ABRs demonstrated longer latencies of wave III, V, and time intervals I-III, I-V in post-COVID-19 patients. COVID-19 can damage the inner ear as well as the auditory pathway. Hearing loss may be the only symptom of COVID-19 or be a late complication of the disease due to postinfectious inflammation of the nerve tissue as a symptom of long COVID-19. Prolonged conduction of the auditory pathway shows the affinity of the virus to the nervous system as a symptom of long COVID. It is advisable to perform hearing diagnostics in patients after COVID-19 and provide them with specialist care.

Vascular Factors in Patients with Midlife Sensorineural Hearing Loss and the Progression to Mild Cognitive Impairment.

Background and Objectives: Midlife hearing loss (HL) has been considered as a major modifiable risk factor for a later-life progression to dementia. Our aim was to detect a link between precocious sensorineural hearing loss (SNHL) and mild cognitive impairment (MCI) and their association to putative risk factors for a common pathology. Materials and methods: In this study, a retrospective case-control study was carried out. A total of 112 patients were enrolled as following: 81 patients with bilateral SNHL and 31 subjects with normal hearing, whose ages ranged from 50 to 65 years. Both groups performed pure tone audiometry, a tinnitus handicap inventory (THI), Mini-Mental State examination (MMSE), and the Montreal Cognitive Assessment (MoCA), Hospital Anxiety and Depression Scale (HADS-A and HADS-D). Results: The mean age was 58 ± 5.2 in SNHL patients and 53.2 ± 4.8 in the control group. The mean pure tone average in the SNHL group was 40.2 ± 18.7 dB HL on the right side and 41.2 ± 17.2 dB HL on the left side, while in the control group it was 12.5 ± 2.8 dB HL on right side and 12.4 ± 3.1 dB HL on left side. About 64% of patients with SNHL exhibited comorbidities, and the most common condition was hypertension. Altered MoCA test scores were significantly related to the pure tone averages in patients with SNHL compared to the control group (p = 0.0004), while the differences in the HADS-A and HADS-D were not significant. Furthermore, a significant correlation was observed in SNHL patients between an altered MoCA test and hypercholesterolemia (p = 0.043). Conclusions: Hearing impairment and screening tests to detect MCI should be considered in the midlife in order to carry out strategies to prevent the progression to dementia. Hypertension and hypercholesterolemia are two risk factors in the development of endothelial dysfunction, oxidative stress, and vascular inflammation, and may represent the common pathology linking the inner ear and brain damage.

Increased Labyrinthine T1 Postgadolinium Signal Intensity Is Associated with the Degree of Ipsilateral Sensorineural Hearing Loss in Patients with Sporadic Vestibular Schwannoma.

Vestibular schwannomas are benign, generally slow-growing tumors, commonly presenting with hearing loss. Alterations in the labyrinthine signal are seen in patients with vestibular schwannoma; however, the association between imaging abnormalities and hearing function remains poorly defined. The purpose of this study was to determine whether labyrinthine signal intensity is associated with hearing in patients with sporadic vestibular schwannoma. This was an institutional review board-approved retrospective review of patients from a prospectively maintained vestibular schwannoma registry imaged in 2003-2017. Signal-intensity ratios of the ipsilateral labyrinth were obtained using T1, T2-FLAIR, and postgadolinium T1 sequences. Signal-intensity ratios were compared with tumor volume and audiometric hearing threshold data including pure tone average, word recognition score, and American Academy of Otolaryngology-Head and Neck Surgery hearing class. One hundred ninety-five patients were analyzed. Ipsilateral labyrinthine signal intensity including postgadolinium T1 images was positively correlated with tumor volume (correlation coefficient = 0.17, P = .02). Among signal-intensity ratios, postgadolinium T1 was significantly positively associated with pure tone average (correlation coefficient = 0.28, P < .001) and negatively associated with the word recognition score (correlation coefficient = -0.21, P = .003). Overall, this result correlated with impaired American Academy of Otolaryngology-Head and Neck Surgery hearing class (P = .04). Multivariable analysis suggested persistent associations independent of tumor volume with pure tone average (correlation coefficient = 0.25, P < .001) and the word recognition score (correlation coefficient = -0.17, P = .02) but not hearing class (P = .14). No consistent significant associations were noted between noncontrast T1 and T2-FLAIR signal intensities and audiometric testing. Increased ipsilateral labyrinthine postgadolinium signal intensity is associated with hearing loss in patients with vestibular schwannoma.

Video head impulse test for the assessment of vestibular function in patients with idiopathic sudden sensorineural hearing loss without vertigo.

Idiopathic sudden sensorineural hearing loss may be accompanied by dizziness without true vertigo. This study used the video head impulse test to evaluate vestibular function in idiopathic sudden sensorineural hearing loss patients who described experiencing dizziness and not true vertigo. A prospective study was conducted of 30 consecutive patients diagnosed with idiopathic sudden sensorineural hearing loss with dizziness without true vertigo. A comparison of the video head impulse test results of the patients who complained of dizziness (symptomatic group) with a group of patients with idiopathic sudden sensorineural hearing loss and no dizziness (asymptomatic) was performed. Nine patients (30 per cent) were symptomatic. Two of those patients had abnormal video head impulse test findings. Seven patients in the asymptomatic group (7 out of 21, 33 per cent) presented with abnormal video head impulse test results. No significant difference in vestibular function between the two groups was detected by the video head impulse test. The site of insult in patients with idiopathic sudden sensorineural hearing loss without true vertigo is usually limited to the cochlea or the cochlear nerve.

The Effect of the Intra-Arterial Heparin Flushing (IAHF) Procedure on Hearing Threshold in Sensorineural Hearing Loss Patients.

Sensorineural hearing loss (SNHL) is a frequent problem in Indonesia but its treatment is still limited. This type of hearing loss is related to oxidative stress and decreased vascularization, which can damage the hair cell. The intra-arterial heparin flushing (IAHF) is a procedure that can recover circulation and its agent, namely heparin, also has antioxidant activity. Therefore, the IAHF procedure has the potential to improve hearing function and can be considered an alternative therapy for SNHL. The study evaluates the effect of the IAHF on hearing improvement based on the difference in hearing threshold values before and after the procedure. This experimental study used a Pretest-Posttest One-Group Only design. A total of 17 patients with sensorineural hearing loss who met inclusion and exclusion criteria were subjected to pure tone audiometry tests before and 4 hours after the IAHF procedure. The mean difference in hearing threshold was analyzed using paired Students t-test for normally distributed data and Wilcoxon for non-normally distributed data. There was a decrease in the means of hearing threshold in the right and left ear 4 hours after the IAHF procedure. However, based on the paired Students t-test, there was not a significant difference in hearing threshold before and after the procedure (p-value > 0.05). There was hearing threshold improvement 4 hours after the IAHF procedure. This study showed that the IAHF procedure can have a therapeutic effect on sensorineural hearing loss patients.

Determinants of the Sensorineural Hearing Loss in Patients with Multidrug-Resistant Tuberculosis in Kinshasa (Democratic Republic of the Congo): A Prospective Cohort Study

Determinants of the Sensorineural Hearing Loss in Patients with Multidrug-Resistant Tuberculosis in Kinshasa (Democratic Republic of the Congo): A Prospective Cohort Study

Nomogram for predicting the prognosis of sudden sensorineural hearing loss patients based on clinical characteristics: a retrospective cohort study.

Based on the clinical characteristics of patients, a nomogram predicting the prognosis of patients suffering from sudden sensorineural hearing loss (SSNHL) was constructed, which could aid in personalized treatment. Data on the clinical characteristics of patients with SSNHL were collected and statistically analyzed. A nomogram for predicting the hearing prognosis of SSNHL patients were then constructed. A total of 356 patients were included in this study, including 227 and 129 in the recovery group (63.76%) and non-recovery group (36.24%), respectively. Univariable logistic regression demonstrated that age, gender, body mass index (BMI), marital, Audiogram curve, vertigo, hearing loss degree, and time to initial treatment were associated with hearing outcomes. Multivariate logistic models showed that age [odds ratio (OR): 0.479, 95% confidence interval (CI): 0.301-0.748, P<0.001], descending (OR: 0.116, 95% CI: 0.047-0.275, P<0.001) and flat audiogram curves (OR: 0.397, 95% CI: 0.159-0.979, P=0.045), profound hearing loss (OR: 0.047, 95% CI: 0.013-0.152, P<0.001), and treatment initiation after 1 week (8-14 days: OR: 0.047, 95% CI: 0.013-0.152, P<0.001; >14 days: OR: 0.131, 95% CI: 0.039-0.413) were risk factors for the hearing recovery. Logistic regression analyses were conducted to construct the prognostic nomogram. As estimated by the area under the receiver operating characteristic curve (ROC), the model had an accuracy of 0.867 (95% CI: 0.709-0.747). The validation analysis confirmed the high accuracy of the nomogram, and the decision curve showed that the model has potential clinical application value. This study demonstrated that age, descending and flat audiogram curves, profound hearing loss, and initiating treatment after 1 week of SSNHL onset were independent risk factors associated with a worse hearing recovery prognosis. Using these factors, a nomogram with a high prediction accuracy was developed to predict the hearing recovery rate of SSNHL patients.

Assessment of Sensorineural Hearing Loss in Patients with Hypothyroidism and its Relationship with Thyroid Stimulating Hormones Levels: A Cross-Sectional Study

Background: The auditory system needs thyroid hormone to develop normally. Additionally, endemic cretinism and people with thyroid hormone resistance have also been linked to hearing loss. Congenital hypothyroidism (CH) and hearing impairment (HI) have been linked in earlier studies. Objective: This study was conducted to assess the sensorineural hearing loss in patients with hypothyroidism and its relationship with thyroid stimulating hormones levels. Study Design: It was a cross-sectional study. Study Duration: The study was conducted at department of ENT CMH, Multan from 01 January 2022 to 30th October 2022. Material and Methods: Sample size of 150 patients who were diagnosed with hypothyroidism were included through convenient sampling. Patients with external or middle ear inflammation or obstruction, as well as those who were unable to complete pure tone audiometry, were not included. Once participants gave their informed consent, a standard medical history and demographics form was used to compile data, and an audiogram was then performed to round out the picture. The data was analysed using SPSS version 22.0. Results: There were a total of 150 patients who participated in the study. The average age of patients who had hearing loss was 38.19 years old. Only 15.16% of patients were male, while 83.98% were female. Tinnitus was experienced by 11 people in their right ears and 10 in their left ears. Twenty (95.24%) patients reported having tinnitus for less than a year when they first visited our clinic. The duration of hypothyroidism in 36.7% of patients who presented to us was between 1 and 12 months, 32% between 13 and 24 months, 18.2% between 25 and 36 months, and 13.3% for more than 36 months. TSH levels ranged from 4.5 to 5.0 in 38 (62.29%) of the individuals with hearing loss, from 5.1 to 5.5 in 8 (13.11%), from 5.6 to 6.0 in 7 (11.47%), and from 6.1 to 6.5 in 8 (13.11%). Prolonged hypothyroidism has been shown to have an effect on hearing loss severity, as indicated by a significant statistical correlation (P value 0.001). Practical implication: This study is very important since its findings may enable researchers to carry out in-depth studies in the area with objectives. Pakistan has to conduct more research on the critical issue of SSNHL. Conclusion: According to the findings of our research, hypothyroidism has an effect on patient's hearing, which can lead to hearing impairment. Keywords: Thyroid function test, Hypothyroidism, Sensorineural hearing loss, Hormones Levels

Assessing the Brighton Collaboration Case Definition of Sensorineural Hearing Loss in Ghana.

The Brighton Collaboration has developed a case definition to assess sensorineural hearing loss (SNHL) as an adverse event of special interest for Lassa fever vaccines. We applied the level of diagnostic certainty (LOC) criteria to 300 SNHL patients aged 18 to 59 years at a tertiary hospital in Ghana from January 2017 through June 2020 and evaluated the applicability of this definition. Most SNHL cases were assessable (85.0%) and assigned level 1 LOC (84.3%); missing information on otoscopy (86.7%) was the main reason for being unable to classify cases. Consistency of LOC classification between assessors was 99.3%. Cases with electronic medical records (EMRs) were less assessable than those with paper records (30.9% versus 93.8%). These findings indicate that the SNHL definition would be applicable to retrospectively ascertain and classify cases in resource-limited settings. Developing an EMR template to document otoscopy results may improve the feasibility at this hospital to ascertain SNHL.

Uncovering Novel Prognostic Factors of Sudden Sensorineural Hearing Loss by Whole-Genome Sequencing of Cell-Free DNA.

Sudden sensorineural hearing loss is a common disease with several etiologic hypotheses, such as infection, vascular occlusion, inflammation, oxidative stress, etc. Studies have reported that the concentration of cell-free DNA in plasma will elevate in these situations. Former studies have reported that the whole-genome sequencing of cell-free DNA has high accuracy and sensitivity in inferring gene expressions. In this study, we plan to use the whole-genome sequencing of cell-free DNA to uncover novel prognostic factors of sudden sensorineural hearing loss and provide new insight into the clinical application of cell-free DNA. In this study, 84 sudden sensorineural hearing loss patients (47 in recovery group and 37 in no-recovery group) were enrolled. After whole-genome sequencing of the cell-free DNA, the protein-protein interaction network was constructed using the differentially expressed genes. Multinomial logistics regression analysis was used to analyze the prognostic factors of hearing improvement. In this study, we found distinct patterns of expressed and unexpressed genes in cell-free DNA sequence read depth coverage in sudden sensorineural hearing loss patients. The top centrality hub genes IGF1, NOTCH1, APOE, FAM3C, RPS6KB1, and RELB were identified from the protein-protein interaction network. Multinomial logistics regression analysis demonstrated that the coverage patterns of 3 key differentially expressed genes (NOTCH1, APOE, and RELB) are significantly different in sudden sensorineural hearing loss with and without hearing recovery. The cell-free DNA could have more applications in diverse diseases, and the coverage patterns of 3 differentially expressed genes (NOTCH1, APOE, and RELB) are independent prognostic factors of sudden sensorineural hearing loss. Their expression levels may play a critical role in the hearing improvement of sudden sensorineural hearing loss patients.