Relationship Between Serum ET-1, HDL-C, and sVCAM-1 and Hearing Loss in Patients with Sudden Deafness

Efficacy of hyperbaric oxygen therapy in treating sudden sensorineural hearing loss: an umbrella review

Introduction

Our objective was to explore the efficacy of hyperbaric oxygen in the treatment of sudden sensorineural hearing loss by conducting an umbrella review of all existing evidence.

Methods

We conducted an umbrella review, searching for related articles in the PubMed, Web of Science, Embase, and Scopus databases. The search period covered from the inception of each database until April 2024. We extracted authors, country of publication, time of publication, number of included studies and participants, interventions, summary of results, P-values, I 2, relative risk (95% CI), and outcome measures. The methodological quality, evidence quality, and overlap rate of the included articles were assessed using AMSTAR 2, GRADE, and OVErviews (GROOVE).

Results

Methodological quality was assessed using AMSTAR 2. Of the nine included articles, two were assessed as "high," three as "moderate," two as "low," and the remaining two as "very low." The quality of evidence was assessed using the GRADE system. It was found that the quality of evidence in most of the studies was unsatisfactory. It was found that there was a slight overlap among the included articles. Six studies reported positive results (OR 1.37; 95% CI, 1.17-1.61; P = 0.04), with high heterogeneity observed (I 2 = 63%). Egger's test indicated bias (P = 0.000101). Three studies reported negative results (MD 1.49; 95% CI, -0.32 to 3.29; P = 0.43; I 2 = 0%), with no significant bias detected (P = 0.106) according to Egger's test.

Conclusion

HBO therapy is shown to be an effective treatment for SSNHL with fewer side effects. However, the methodological quality and evidence of the systematic reviews and meta-analysis included in this study were generally low. Therefore, more high-quality, large-scale, multi-center randomized controlled trials are needed in the future to verify the efficacy of HBO therapy for SSNHL.

Systematic review registration

https://www.crd.york.ac.uk/prospero, identifier [CRD42024523651].

[Endothelial dysfunction as a pathogenetic factor of sensorineural hearing loss]

Chronic sensorineural hearing loss (SNHL) is a common disease that leads to disability of the population. Despite the many reports devoted to SNHL, the question of the pathogenesis of the disease is still open. Many researchers consider the development of SNHL as a manifestation of microangiopathy. The mechanism of development of microangiopathy in SNHL is multifactorial, but most researchers agree that endothelial dysfunction (ED) triggers a complex of pathological changes in the vessels of the inner ear.

OBJECTIVE

Review of the results of scientific research in recent years on the problem of etiopathogenesis of sensorineural hearing loss from the perspective of endothelial dysfunction in the formation of auditory disorders.