1. Treatment within 7 days improved hearing outcomes, especially in flat descending and total deafness subtypes.
2. Younger patients had better recovery than older patients in some subtypes.
3. Earlier therapy and younger age improved tinnitus; vertigo outcomes were favorable across groups.
4. Batroxobin and acupuncture provided no added benefit.
5. Linked to smaller hearing gains in total deafness and low-frequency descending subtypes.
6. Intratympanic corticosteroids improved hearing in poor responders, mainly in total deafness.
7. Retrospective design, single-center setting, and small sample size reduced generalizability.

Source: American Journal of Otolaryngology