ABSTRACT

IJSR

International Journal of Scientific Research

2277 - 8179

Indian Society for Health and Advanced Research

ijsr-8-1-17629

Original Research Paper

HEARING OUTCOME FOLLOWING CANAL WALL DOWN MASTOIDECTOMY WITH AND WITHOUT MASTOID CAVITY OBLITERATION AND ROUND WINDOW SHIELDING- a comparative observational study

SALINI.A

Dr. DR.

E. RAMESHKUMAR

Dr.

January 2019

8 1 01 02 ABSTRACT

Objective:Following canal wall down mastoidectomy, cavity obliteration is one of the recognized methods to reduce cavity size. In this study we have tried to find out if cavity

obliteration along with Round Window shielding can improve hearing.

This prospective comparative observational study was conducted in

66 patients who presented in Department of Otorhinolaryngology and Head & Neck

Surgery, JMMC &RI , with chronic otitis media – squamosal type, meeting the inclusion criteria. Patients in whom cavity obliteration and RW shielding was included in group 1 and others in group 2.Hearing was reassessed after 6months of surgery.

Postoperatively there was a closure of 12.33dB in ABG and 16 dB hearing gain .

There is statistically significant improvement in hearing following mastoid

cavity obliteration and RW shielding. Significant reduction in Air–bone gap is also

obtained.