The objective of this observational study was to understand the effect of HBO on patients with SSNHL and its association with coagulation function and prognosis.

The main question it aims to answer is whether HBO therapy can improve outcomes and coagulation function in patients with SSNHL.

The prognosis of SSNHL patients receiving HBO and SSNHL patients not receiving HBO were compared

Inclusion Criteria:

• Meet the diagnostic criteria for sudden deafness in the American Academy of Otolaryngology Head and Neck Surgery 2019 Clinical Practice Guidelines for Sudden Deafness;
• Aged 18-75 years old;
• Patients with unilateral sudden deafness for the first time, and the onset time is less than 2 weeks.

Exclusion Criteria:

• Patients with other ear diseases, such as auditory trauma, barotrauma, retrocochlear disease, bilateral hearing loss, history of chronic otitis media in the same ear, and history of surgery in the same ear;
• Patients with serious primary diseases such as heart, liver, kidney dysfunction and hematopoietic system diseases;
• Pregnant and nursing patients;
• Accompanied by serious mental illness;
• Patients with incomplete clinical data.

From January 2022 to September 2024, in Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Otolaryngology Hospital Affiliated to Fudan University, Xinhua Hospital affiliated to Shanghai Jiao Tong University or Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, treating patients with sudden sensorineural deafness.