Preliminary Hearing Results of Tympanomastoidectomies Using Titanium Prostheses: Scenario in a Developing Country

Abstract

The study was done to review postoperative hearing gain of patients with different Middle Ear Risk Index (MERI) undergoing Tympanomastoidectomies with titanium prostheses reconstruction. A Retrospective chart review was performed from September 2009 to December 2011. Of the 17 cases, 9 had moderate MERI while 8 had severe MERI. 9 patients underwent Tympanomastoidectomy with Total Ossicular Reconstruction Prostheses (TORP) and 8 with Partial Ossicular Reconstruction Prostheses (PORP). Hearing gain of 25.31 dB was achieved in cases with moderate MERI compared to 29.37 dB in severe MERI. Less than 20 dB average air-bone gap was achieved in 75% of PORP and 77.77% of TORP reconstructions. In developing countries with limited resources, decision regarding ossicular reconstruction should be made taking into account MERI, intra operative findings and type of surgery. Best results are achieved in cases of CWD with TORP and ICW with PORP.

Middle Ear Risk Index [MERI] as Prognostic Factor in Tympanomastoidectomy with Tympanoplasty

“…On applying the one way ANOVA the p-value was (P=0.01). This observation was in concurrence with the finding of Gulati A, et al [26] and not in concurrence with findings of Khalid A, et al [27]. Further post hoc Tukey's Honest Significant Difference test was applied to find the difference between mild, moderate and severe MERI groups.…”

“…In our study the p-value for mean audiological gain in the group of the patients with mild, moderate and severe MERI at 6 months after surgery on applying the one way ANOVA was (P=0.02), the difference being statistically significant. This observation was in concurrence with the finding of Gulati A, et al [26] and not in concurrence with findings of Khalid A, et al [27]. Post hoc Tukey's Honest Significant Difference test was applied to find the difference between mild, moderate and severe MERI groups.…”