Intraocular pressure rise during 25-gauge vitrectomy trocar placement
| Autor: | Ana Maria Suarez-Licona, Orlando Ustariz-Gonzalez, Maximiliano Gordon-Angelozzi, Jose Dalma-Weiszhausz |
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| Rok vydání: | 2007 |
| Předmět: |
Microsurgery
Intraocular pressure medicine.medical_specialty genetic structures Swine medicine.medical_treatment Ocular hypertension Vitrectomy Cellular and Molecular Neuroscience Dogs Ophthalmology medicine Animals Humans Cannula insertion Intraocular Pressure Rise 25 gauge vitrectomy Intraocular Pressure business.industry Vascular compromise medicine.disease Eye Injuries Penetrating eye diseases Sensory Systems Surgery Ocular Hypertension sense organs business |
| Zdroj: | Graefe's Archive for Clinical and Experimental Ophthalmology. 246:187-189 |
| ISSN: | 1435-702X 0721-832X |
| DOI: | 10.1007/s00417-007-0713-3 |
| Popis: | Small-gauge vitrectomy has been used to treat various vitreous and macular pathologies. Trocar/cannula insertion may raise intraocular pressure (IOP) to the point it might become detrimental to the eye, especially in the setting of open-globe trauma and eyes with severe vascular compromise. We propose to determine the magnitude of this IOP rise and its possible implications. Three different settings were designed to measure IOP rise during trocar placement for 25 ga vitrectomy (TSV); water-column manometry was performed during trocar placement in pig eyes. Electronic applanation tonometry was recorded in human eyes undergoing 25-ga vitrectomy for macular pathology during trocar placement, and wound behavior was recorded during trocar placement in harvested dog eyes with a previously sutured corneal wound. The pressure recorded during trocar placement was 57.5 mmHg in pig eyes and 63.7 mmHg in human eyes. Sutured corneal wounds in dog eyes showed wound leakage and tissue incarceration during trocar insertion. The 25-ga vitrectomy system may have limited usefulness in the setting of open-eye trauma and compromised bloodflow, due to the elevated pressures reached during trocar placement. |
| Databáze: | OpenAIRE |
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