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Endoscopic visualisation of the round window during cochlear implantation
A Jain1, R Sharma1, J C Passey1
1Department of ENT, Maulana Azad Medical College and Associated Lok Nayak Hospital, New Delhi, India.
The Journal of Laryngology and Otology
|March 5, 2020
Summary
Endoscopic visualization significantly improves the view of the round window membrane during cochlear implantation compared to microscopy. This enhanced visibility aids in better electrode array insertion, optimizing surgical outcomes.
Area of Science:
- Otolaryngology
- Surgical Technology
Background:
- Endoscopes offer magnified views of the middle ear, revealing hidden anatomical areas.
- Otoendoscopes are particularly useful for visualizing the round window niche in cochlear implantation procedures.
Purpose of the Study:
- To compare microscopic versus endoscopic visualization of the round window membrane during cochlear implantation.
- Evaluate the effectiveness of endoscopes in improving visualization during the procedure.
Main Methods:
- A study involving 20 patients undergoing cochlear implantation.
- Accessibility of the round window membrane was graded using the St Thomas Hospital classification, first with a microscope, then with an endoscope.
Main Results:
- Endoscopic visualization of the round window membrane showed improvement in all 20 patients compared to microscopic visualization.
- Successful electrode array insertion via round or extended round window approach in 18 patients; 2 required bony cochleostomy due to unfavorable anatomy.
Conclusions:
- The primary advantage of endoscope-assisted cochlear implantation is enhanced visibility of the round window region.
- Improved visualization can potentially lead to better surgical precision and outcomes.
