Alice van Zon1, Jeroen P M Peters, Inge Stegeman, Adriana L Smit, Wilko Grolman. 1. *Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center Utrecht, Utrecht, The Netherlands; and †Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands.
Abstract
OBJECTIVE: A systematic review of the literature to evaluate the clinical outcome of cochlear implantation for patients with single-sided deafness (SSD) or asymmetrical hearing loss (AHL). DATA SOURCES: We searched the PubMed, Embase, Cochrane Library, and CINAHL databases from their inception up to December 10, 2013 for SSD or AHL and cochlear implantation or their synonyms. STUDY SELECTION: In total, 781 articles were retrieved, of which 15 satisfied the eligibility criteria. Our outcomes of interest were speech perception in noise, sound localization, quality of life (QoL), and tinnitus. DATA EXTRACTION: Critical appraisal showed that six studies reported on less than five patients or that they carried a low directness of evidence or a high risk of bias. Therefore, we extracted the data of nine studies (n = 112). Patient numbers, age, duration of deafness, classification of deafness, pure tone audiometry, follow-up duration, and outcome measurements were extracted from all nine articles. DATA SYNTHESIS: Because of large heterogeneity between studies, we were not able to pool data in a meta-analysis. We therefore summarized the results of the studies specified per outcome. CONCLUSION: There are no high-level-of-evidence studies concerning cochlear implantation in patients with SSD or AHL. Current literature suggests important benefits of cochlear implantation regarding sound localization, QoL, and tinnitus. Varying results were reported for speech perception in noise, possibly caused by the large clinical heterogeneity between studies. Larger and high-quality studies are certainly warranted.
OBJECTIVE: A systematic review of the literature to evaluate the clinical outcome of cochlear implantation for patients with single-sided deafness (SSD) or asymmetrical hearing loss (AHL). DATA SOURCES: We searched the PubMed, Embase, Cochrane Library, and CINAHL databases from their inception up to December 10, 2013 for SSD or AHL and cochlear implantation or their synonyms. STUDY SELECTION: In total, 781 articles were retrieved, of which 15 satisfied the eligibility criteria. Our outcomes of interest were speech perception in noise, sound localization, quality of life (QoL), and tinnitus. DATA EXTRACTION: Critical appraisal showed that six studies reported on less than five patients or that they carried a low directness of evidence or a high risk of bias. Therefore, we extracted the data of nine studies (n = 112). Patient numbers, age, duration of deafness, classification of deafness, pure tone audiometry, follow-up duration, and outcome measurements were extracted from all nine articles. DATA SYNTHESIS: Because of large heterogeneity between studies, we were not able to pool data in a meta-analysis. We therefore summarized the results of the studies specified per outcome. CONCLUSION: There are no high-level-of-evidence studies concerning cochlear implantation in patients with SSD or AHL. Current literature suggests important benefits of cochlear implantation regarding sound localization, QoL, and tinnitus. Varying results were reported for speech perception in noise, possibly caused by the large clinical heterogeneity between studies. Larger and high-quality studies are certainly warranted.
Authors: Paul Van de Heyning; Dayse Távora-Vieira; Griet Mertens; Vincent Van Rompaey; Gunesh P Rajan; Joachim Müller; John Martin Hempel; Daniel Leander; Daniel Polterauer; Mathieu Marx; Shin-Ichi Usami; Ryosuke Kitoh; Maiko Miyagawa; Hideaki Moteki; Kari Smilsky; Wolf-Dieter Baumgartner; Thomas Georg Keintzel; Georg Mathias Sprinzl; Astrid Wolf-Magele; Susan Arndt; Thomas Wesarg; Stefan Zirn; Uwe Baumann; Tobias Weissgerber; Tobias Rader; Rudolf Hagen; Anja Kurz; Kristen Rak; Robert Stokroos; Erwin George; Ruben Polo; María Del Mar Medina; Yael Henkin; Ohad Hilly; David Ulanovski; Ranjith Rajeswaran; Mohan Kameswaran; Maria Fernanda Di Gregorio; Mario E Zernotti Journal: Audiol Neurootol Date: 2017-03-21 Impact factor: 1.854