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Suture Stenting of a Tube Fenestration for Early Intraocular Pressure Control After Baerveldt Glaucoma Implant Surgery

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Purpose:

To evaluate the efficacy and safety of a tube fenestration stented with a 10-0 polyglactin suture for controlling early postoperative intraocular pressure (IOP) after Baerveldt glaucoma implant (BGI) surgery.

Methods:

The medical records of 110 patients (119 eyes) who underwent BGI surgery with a tube fenestration stented with a 10-0 polyglactin suture anterior to an occlusive tube ligature were retrospectively reviewed. Main outcome measures included IOP and number of glaucoma medications at postoperative day 1, week 1, and weeks 2 to 3 as well as complications occurring before ligature release.

Results:

Mean±SD preoperative IOP was 30.9±9.3 mm Hg using an average of 3.8±1.1 glaucoma medications. A statistically significant reduction in IOP and glaucoma medications was observed at all timepoints during the first 3 postoperative weeks compared with baseline (P<0.001). Mean IOP on postoperative day 1, week 1, and weeks 2 to 3 was 18.4±12.2 mm Hg on no medication, 15.9±9.4 mm Hg on 1.0±1.3 medications, and 16.7±8.2 mm Hg on 1.2±1.5 medications, respectively. In total, 44 eyes (37%) achieved IOP control without glaucoma medication during period of tube occlusion.

Conclusions:

The use of a single, monofilament 10-0 polyglactin suture to stent a fenestration proximal to the occlusive ligature of a BGI tube is effective in controlling IOP in the early postoperative period. Hypotony-related complications were infrequent and resolved in all cases with in-office interventions.
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Keywords: fenestration; stent; tube shunt

Document Type: Research Article

Affiliations: New York Eye and Ear Infirmary of Mount Sinai, New York, NY

Publication date: March 1, 2018

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