Posterior Tympanotomy Versus Subtotal Petrosectomy: A Comparison of Complications in Cochlear Implantation
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Published on: May 23, 2021
Seulgi Lee1, Jong Bin Lee2, Jee-Hye Chung3
1Department of Otorhinolaryngology - Head and Neck Surgery, Chungnam National University College of Medicine.
Objective:
To compare the postoperative complications between posterior tympanotomy cochlear implantation (PTCI) and subtotal petrosectomy cochlear implantation (SPCI).
Study Design:
A retrospective cohort study.
Setting:
Two tertiary referral centers.
Patients:
Two hundred ninety-eight patients who underwent PTCI and 33 who underwent SPCI.
Interventions:
Cochlear implantation using either posterior tympanotomy or subtotal petrosectomy.
Main Outcome Measures:
Postoperative complications between the two groups were compared after categorization into minor complications (requiring conservative management) and major complications (requiring surgical revision or hospitalization treatment).
Results:
Dizziness was the most common complication in both groups. The major complication rate in the SPCI group was significantly higher than in the PTCI group (12.1% [4 of 33] versus 1.3% [4 of 298], p = 0.004), while the minor complication rate was similar between the two groups. Among the major complications, device migration was significantly more common when SPCI was performed (9.1% [3 of 33] versus 0.3% [1 of 298], p = 0.003).
Conclusions:
Major complication rate of SPCI was higher than that of PTCI; particularly, device migration was more commonly observed after SPCI than PTCI. Therefore, special attention should be paid to device placement and fixation during SPCI.
