Steroids for idiopathic sudden sensorineural hearing loss

Area of Science:

• Otolaryngology
• Clinical Pharmacology
• Evidence-Based Medicine

Background:

• Idiopathic sudden sensorineural hearing loss (ISSHL) is a sudden, unexplained hearing impairment.
• Steroids are frequently used for ISSHL, but their efficacy is debated.
• This review updates previous analyses of steroid treatment for ISSHL.

Purpose of the Study:

• To evaluate steroid effectiveness in improving hearing in ISSHL patients.
• To assess the impact of steroids on reducing tinnitus.
• To determine the incidence of significant steroid-related side effects.

Main Methods:

• Systematic search of multiple databases for randomized controlled trials (RCTs) of steroids for ISSHL.
• Inclusion of trials comparing steroids to placebo or no treatment.
• Independent review of trials, risk of bias assessment, and narrative synthesis due to heterogeneity.

Main Results:

• Only three RCTs involving 267 participants met inclusion criteria, all with a high risk of bias.
• Results were contradictory: one trial showed no benefit, another indicated significant hearing improvement with oral steroids, and a third showed no effect.
• Limited data exists on side effects; two trials reported no clear adverse events.

Conclusions:

• The evidence from RCTs on steroid efficacy for ISSHL is inconclusive due to contradictory findings and small sample sizes.
• The overall value of steroids in treating ISSHL remains unclear.
• Further high-quality research is needed to establish definitive treatment guidelines.