1. When compared to primary mastoid obliteration, secondary obliteration resulted in a more pronounced, though not statistically significant, improvement in quality of life.
2. In both the secondary and primary obliteration groups, a significant improvement in quality of life was noted.
Evidence Rating Level: 2 (Good)
Study Rundown: During mastoidectomy, cavity obliteration and reconstruction of the bony external ear canal is often recommended. If the obliteration is not completed during the procedure (primary obliteration), the cavity may not heal and a secondary obliteration procedure may be necessary. The authors used the Glasgow Benefit Inventory to assess quality of life (QOL) changes in patients following primary and secondary mastoid cavity obliteration. A subsequent analysis demonstrated a more pronounced, though not statistically significant, QOL improvement in the secondary obliteration group. The much smaller number of patients in the secondary obliteration group may explain the lack of significance.
In-Depth [retrospective cohort]: This study compared the QOL improvement in 46 patients who had primary mastoid cavity obliteration and 12 who needed secondary obliteration. The 58 patients completed the Glasgow Benefit Inventory, either in person or over the phone. In the secondary obliteration group 83% of the subjects reported improvement in QOL compared to only 72% in the primary obliteration group. The secondary group also reported greater improvement of QOL across the GBI subscales (general, physical, and social). While these differences were noted clinically, they were not statistically significant on a Mann Whitney U test (p = .10, p = .15, and p = .43 respectively).
By Amir Tarsha and Chaz Carrier
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