A two-stage technique for intraoperative fluid-gas exchange following pars plana vitrectomy. Arch Ophthalmol 1990 Oct;108(10):1484-6
Date
10/01/1990Pubmed ID
2222282DOI
10.1001/archopht.1990.01070120132043Scopus ID
2-s2.0-0025153131 (requires institutional sign-in at Scopus site) 15 CitationsAbstract
We describe herein a two-stage technique of intraoperative fluid-gas exchange following pars plana vitrectomy. The first stage is a complete fluid-air exchange using an air pump and intraocular linear suction. The air pump then maintains the intraocular pressure at the desired level during adjunctive procedures, such as laser endophotocoagulation. The second stage is an air-gas mixture exchange in which the desired gas, premixed in air to the desired final intraocular concentration, is manually flushed through the eye. This technique allows the attainment of an accurate concentration of intraocular gas if the air-gas mixture exchange is complete. In vitro and in vivo experiments in aphakic human eyes demonstrated that an effectively complete air-gas mixture exchange occurs with a 25-mL flush volume. This result compares favorably with the theoretical prediction derived from a "pharmacokinetic approximation" equation.
Author List
Williams DF, Peters MA, Abrams GW, Han DP, Mieler WFAuthor
Dennis Han MD Emeritus Professor in the Ophthalmology department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Body FluidsEye
Gases
Humans
In Vitro Techniques
Intraoperative Care
Vitrectomy
