More details
Hide details
Institute of Physiology and Pathology of Hearing, ul. Zgrupowania AK “Kampinos” 1, 01-943 Warszawa, Poland
World Hearing Center, ul. Mokra 17, Kajetany 05-830 Nadarzyn, Poland
Publication date: 2020-04-20
J Hear Sci 2012;2(2):11–18
What is now known as partial deafness treatment (PDT) began as a great challenge: insert a cochlear implant and preserve residual preoperative hearing. PDT addresses the situation where patients have low frequency hearing which is not badly affected, or is even fully functional, and it is necessary to complement it electrically in the medium and high frequency ranges. The first surgery in which existing normal hearing was electrically complemented, performed 10 years ago, has opened up a new direction in the treatment of other (more frequent) partial hearing impairments. The long term observation of more than 1200 ears has allowed us to refine a new strategy of PDT. The first surgery to electrically complement the existing hearing of an adult was performed in 2002, and led in 2004 to the same treatment in a child. It was preceded with 3 years of research on how to enhance the low-frequency residual hearing of patients by amplifying it with conventional hearing aids while supplying high frequencies with an electrically stimulated implant. Results of these studies, presented in 2000 at international conferences, demonstrated the potential for widening the first, cautious indications for the use of cochlear implants to situations where there are various levels of residual low-frequency hearing. Experience with 1200 cases of partial deafness surgery have proven its general validity and have refined the surgical guidelines. The surgical strategy is based on 6 main steps involving an approach to scala tympani through the round window, and use of electrodes with an active length of 20 to 28 mm.
von Ilberg C, Kiefer J, Tillein J et al: Electric-acoustic stimulation of the auditory system. New technology for severe hearing loss. ORL J Otorhinolaryngol Relat Spec, 1999; 61: 334–40.
Gantz BJ, Turner C, Gfeller K: Expanding cochlear implant technology: Combined electrical and acoustical speech processing. Cochlear Implants Int, 2004; 5(Suppl.1): 8–14.
Briggs RJ, Tykocinski M, Stidham K, Roberson JB: Cochleostomy site: implications for electrode placement and hearing preservation. Acta Otolaryngol, 2005; 125: 870–76.
Skarzynski H, Lorens A, Piotrowska A: Residual acoustic hearing in the ear before and after cochlear implantation. Presentation at the 5th ESPCI in Antwerp, 2000.
Skarzynski H, Lorens A, D’Haese P et al: Preservation of residual hearing in children and post-lingually deafened adults after cochlear implantation: an initial study. ORL J Otorhinolaryngol Relat Spec, 2002; 64: 247–53.
Skarzynski H, Lorens A, Piotrowska A: A new method of partial deafness treatment. Med Sci Monit, 2003; 9(4): CS20–24.
Skarzynski H, Lorens A, Piotrowska A, Anderson I: Partial deafness cochlear implantation in children. Int J Pediatr Otorhinolaryngol, 2007; 71: 1407–13.
Skarzynski H, Lorens A, Piotrowska A, Skarzynski PH: Hearing preservation in partial deafness treatment. Med Sci Monit, 2010; 16(11): CR555–62.
Skarzynski H, Lorens A: Partial deafness treatment. Cochlear Implants Int, 2010; 11(Suppl.1): 29–41.
Skarzynski H, Podskarbi-Fayette R: A new cochlear implant electrode design for preservation of residual hearing: a temporal bone study. Acta Otolaryngol, 2010; 130: 435–42.
Skarzynski H, Lorens A, Matusiak M et al: Partial deafness treatment with the Nucleus Straight Research Array Cochlear Implant. Audiol Neurootol, 2012; 17: 82–91.
Skarzynski H, Lorens A, Zgoda M et al: Atraumatic round window deep insertion of cochlear electrodes. Acta Otolaryngol, 2011; 131: 740–49.
Skarzynski H, Lorens A, Piotrowska A, Anderson I: Partial deafness cochlear implantation provides benefit to a new population of individuals with hearing loss. Acta Otolaryngol, 2006; 126: 934–40.
Prentiss S, Sykes K, Staecker H: Partial deafness cochlear implantation at the University of Kansas: techniques and outcomes. J Am Acad Audiol, 2010; 21: 197–203.
Lorens A, Zgoda M, Obrycka A, Skarzynski H: Fine Structure Processing improves speech perception as well as objective and subjective benefits in pediatric MED-EL COMBI 40+ users. Int J Pediatr Otorhinolaryngol, 2010; 74: 1372–78.
Dorman MF, Gifford RH: Combining acoustic and electric stimulation in the service of speech recognition. Int J Audiol, 2010; 49: 912–19.
Helbig S, Baumann U, Hey C, Helbig M: Hearing preservation after complete cochlear coverage in cochlear implantation with the free-fitting FLEXSOFT electrode carrier. Otol Neurotol, 2011; 32: 973–79.