Abstract
Objective
To investigate the outcomes of aqueous shunt exposure repair and to identify risk factors for recurrent exposure after surgical repair.
Methods
This is a retrospective interventional case series of consecutive patients who underwent repair of an exposed aqueous shunt. Demographic and clinical data were extracted from the patients’ records and survival analysis was employed to determine the probability of survival of the repair without further exposure. Cox proportional regression analysis was utilised to identify potential risk factors for failure of the repair surgery.
Results
Seventy-six eyes of 76 patients were included in the study. The probability of survival without further exposure was 76.2% (CI 66.9–86.8%), 72.7% (CI 62.8–84.1%) and 54.7% (40.5–73.7%) at 1,2 and 4 years, respectively. No eye in which the tube was repositioned in the anterior chamber or in the sulcus (n = 9; 11.8%) developed a recurrence of the exposure. A shorter interval from the time of tube insertion to the repair surgery (HR 2.87 [CI 1.11–7.39]; p = 0.03; reference longer interval), a history of previous surgical revision (HR 3.06 [1.15–8.12]; p = 0.02; reference no prior revision) and the use of a human pericardial donor patch at the time of revision (HR 3.43 [1.16–10.13]; p = 0.03; reference other than pericardium) was associated with an increased risk of exposure recurrence.
Conclusion
Aqueous shunt exposure revision is associated with reasonable mid and long term success. A shorter interval from tube insertion to exposure revision, previous revisions and the use of a human pericardium patch were associated with increased risk of failure.
Data availability
The data that support the findings of this study are located in Moorfields Eye Hospital and are available from the authors upon reasonable request.
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All the authors have made substantial contribution to the design, drafting, revision and final approval of the work. CG acquired and analysed the data for the work.
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Gizzi, C., Rai, P. & Barton, K. Aqueous shunt exposure repair: outcomes and risk factors for recurrence. Eye (2024). https://doi.org/10.1038/s41433-024-03219-6
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DOI: https://doi.org/10.1038/s41433-024-03219-6
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