Systematically review the current literature for evidence on the "real-life" benefits of hearing preservation cochlear implantation (HPCI) for children and adults.Systematic search of Pubmed, MEDLINE, EMBASE, CINHAL and Cochrane Library for MesH terms37 studies that matched criteria for review with 8/37 including children and 29/37 including adults.HPCI was associated with betterCurrent literature on the "real-life" benefit of HPCI, although limited, supports the existence of meaningful benefit, especially in