ESCRS - PO412 - Intraoperative Evaluation Of A Novel Method For Infusion Management During Phacoemulsification, Based On Non-Contact Measurement Of Fluid Flow Rates

Intraoperative Evaluation Of A Novel Method For Infusion Management During Phacoemulsification, Based On Non-Contact Measurement Of Fluid Flow Rates

Published 2024 - 42nd Congress of the ESCRS

Reference: PO412 | Type: Free paper | DOI: 10.82333/h16t-cy96

Authors: Bulat Aznabaev 1 , Timur Mukhamadeev 1 , Tagir Dibaev 1 , Timur Ismagilov* 1 , Aleksandr Vafiev 1

1Ophthalmology,Bashkir State Medical University,Ufa,Russian Federation;ZAO "Optimedservis",Ufa,Russian Federation

Purpose

The reduction of the adverse effects of intraoperative changes in intraocular pressure, also known as post-occlusion surge, on the intraocular structures, is an important goal for ensuring phacoemulsification safety. To this end, a method has been developed to control the infusion rate during phacoemulsification by controlling the infusion and aspiration rates in combination with monitoring vacuum parameters. The goal of our research is to evaluate intraoperative parameters in the surgical process of cataract phacoemulsification, using both new and well-established methods of adaptive infusion control, in patients with cataracts.

Setting

Optimed Laser Vision Recovery Center, Bashkir State Medical University, Ufa, Republic of Bashkortostan, Russia.

Methods

Phacoemulsification was performed on 35 patients in the main group using a new method of adaptive infusion control on the Optimed Profi surgical system (ZAO Optimedservis), and on 35 patients in the control group using the well-known method of adaptive infusion control on the Centurion Vision System (Alcon, Inc.). In each study group, patients were divided into 4 groups according to the degree of cataract density (the Buratto classification). The main intraoperative parameters studied were the volume of infusion fluid, the duration of lens nucleus removal. For statistical analysis, the Mann-Whitney U-test was used, with a significant difference established at p < 0.05. Results were presented as the median (first quartile, third quartile).

Results

When comparing the volume of infusion fluid used, there was a statistically significant difference between patients with II and IV degrees of cataract density. In the main group, patients with II had an average of 49.72 ml (40.38 ml; 60.31 ml) of fluid, while those in the control group had 60.11 ml (50.23 ml; 66.82 ml). For those with IV cataracts, the difference was even more pronounced, with 61.24 ml (52.93 ml; 70.83 ml) in the main group and 73.08 ml (60.61 ml; 82.02 ml) in the control. In the main group, regardless of the degree of cataract, the duration of lens removal was shorter than in the control group. However, there were no significant statistical differences between the two groups (p > 0.05).

Conclusions

The use of a new adaptive infusion method in phacoemulsification helps reduce the volume of infusion fluid used and shortens the duration of lens nucleus removal.