Background 
SSHL in the only hearing ear is a rare otological emergency with unknown incidence. HBOT has been shown to offer significant improvement in SSHL however is not routinely available within the NHS and rarely accessed by ENT professionals. 
Objectives 
To review how HBOT can be used in these exceptional cases.  
Methods 
Review of two cases of SSHL in the only hearing ear in which HBOT was accessed with NHS funding.
Results
In both cases funding was acquired on the day of presentation. In addition to medical treatment, according to the presented algorithm, both patients had good recovery of hearing and did not require onward referral for further treatment. 
Conclusions
HBOT is a useful adjunct to standard treatment. It is cost effective when measured against the cost of further audiological or surgical treatment. Further education is needed for ENT professionals regarding its use and availability.

Hyperbaric Oxygen Therapy for Sudden Sensorineural Hearing Loss in the Only Hearing Ear