Hostname: page-component-76fb5796d-zzh7m Total loading time: 0 Render date: 2024-04-25T11:42:57.601Z Has data issue: false hasContentIssue false
  • English
  • Français

New SMS classification of cochleovestibular malformation and its impact on decision-making

Published online by Cambridge University Press:  08 May 2019

M Grover ,
S Sharma ,
C Preetam ,
G Gupta ,
S Samdani ,
S Agarwal ,
S N Singh  and
M P Sharma
M Grover
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, SMS (Sawai Man Singh) Medical College and Hospital, Jaipur, Rajasthan, India
S Sharma*
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, SMS (Sawai Man Singh) Medical College and Hospital, Jaipur, Rajasthan, India
C Preetam
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, All India Institute of Medical Sciences, Bhubaneswar, Orissa, India
G Gupta
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, Sardar Patel Medical College, Bikaner, Rajasthan, India
S Samdani
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, SMS (Sawai Man Singh) Medical College and Hospital, Jaipur, Rajasthan, India
S Agarwal
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, SMS (Sawai Man Singh) Medical College and Hospital, Jaipur, Rajasthan, India
S N Singh
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, SMS (Sawai Man Singh) Medical College and Hospital, Jaipur, Rajasthan, India
M P Sharma
Affiliation:
Department of Otorhinolaryngology and Head and Neck Surgery, SMS (Sawai Man Singh) Medical College and Hospital, Jaipur, Rajasthan, India
*
Author for correspondence: Dr Shitanshu Sharma, Department of Otorhinolaryngology and Head and Neck Surgery, SMS Medical College and Hospital, Jaipur 302004, Rajasthan, India E-mail: drshitanshusharma@gmail.com
Get access Rights & Permissions [Opens in a new window]

Abstract

Objective

To propose a new classification of inner-ear anomalies that is more clinically oriented and surgically relevant: the SMS (Sawai Man Singh) classification of cochleovestibular malformations.

Methods

A retrospective multicentric study was conducted of 436 cochlear implantations carried out in 3 Indian tertiary care institutes. Patients with anomalous anatomy were included and classified, as per the new SMS classification, into cochleovestibular malformation types I, II, III and IV, based on cochlear morphology, modiolus and lamina cribrosa.

Results

There were 19, 23, 8 and 4 patients with cochleovestibular malformation types I, II, III and IV, respectively. Two-year post-operative Meaningful Auditory Integration Scale scores were statistically analysed.

Conclusion

This new classification for inner-ear anomalies is a simpler, more practical, outcome-oriented classification that can be used to better plan the surgery. These merits make it a more uniform classification for recording results.

Keywords

Retrospective StudiesClinical Decision-MakingCochlear ImplantationCochleaEar, InnerCochleovestibular MalformationsPrognosis
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 133 , Issue 5 , May 2019 , pp. 368 - 375
Copyright
Copyright © JLO (1984) Limited, 2019 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Dr S Sharma takes responsibility for the integrity of the content of the paper

References

1Jackler, RK, Luxford, WM, House, WF. Congenital malformations of the inner ear: a classification based on embryogenesis. Laryngoscope 1987;97:2–14Google Scholar
2Papsin, BC. Cochlear implantation in children with anomalous cochleovestibular anatomy. Laryngoscope 2005;115(1 Pt 2 suppl 106):1–26Google Scholar
3Sennaroglu, L, Bajin, MD. Classification and current management of inner ear malformations. Balkan Med J 2017;34:397–411Google Scholar
4Sennaroglu, L. Cochlear implantation in inner ear malformations--a review article. Cochlear Implants Int 2010;11:4–41Google Scholar
5Sennaroglu, L, Saatci, I. A new classification for cochleovestibular malformations. Laryngoscope 2002;112:2230–41Google Scholar
6Sennaroglu, L, Atay, G, Bajin, MD. A new cochlear implant electrode with a “cork”-type stopper for inner ear malformations. Auris Nasus Larynx 2014;41:331–6Google Scholar
7Cooper, H, Craddock, L. Cochlear Implants: A Practical Guide. San Diego: Singular Publishing Group, 1991;183Google Scholar
8Mondini, C. The anatomic section of a boy born deaf: the commentaries of the Academy of Sciences of the Institute of Bologna [in Latin]. Bononiae 1791;7:419–28Google Scholar
9Mangabeira-Albernaz, PL. The Mondini dysplasia: from early diagnosis to cochlear implant. Acta Otolaryngol 1983;95:627–31Google Scholar
10Miyamoto, RT, Robbins, AJ, Myres, WA, Pope, ML. Cochlear implantation in the Mondini inner ear malformation. Am J Otol 1986;7:258–61Google Scholar
11Phelps, PD. The basal turn of the cochlea. Br J Radiol 1992;65:370–4Google Scholar