Observations on hearing preservation in patients with hybrid-L electrode implanted at Poznan University of Medical Sciences in Poland.

The objective of the paper is to evaluate the hearing preservation rate in patients with high frequency hearing loss, treated with Cochlear Nucleus Freedom Hybrid-L implant in the Otolaryngology Department, Poznan University of Medical Sciences in Poland. Study was designed as the retrospective analysis. Twenty-one patients were operated and implanted with Nucleus Freedom Hybrid-L implant.

[Epidemiological and demographic analysis of indications for Baha® surgery in Poland--multicenter study].

Aim Of The Study: To collect and analyze epidemiological and demographical data of patients qualified for and implanted with the Baha® system in Poland.

Material And Method: 17 out of 28 otolaryngology departments performing Baha® implantation in Poland participated in the study. Up to date there were 286 patients registered in database.