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A risk-based choice of syringes and associated equipment for compounding and intravitreal administration of drugs for wet age-related macular degeneration
European Statement
Production and Compounding
Author(s)
Espen Gleditsch, Dag Fossum
Why was it done?
There are no available syringes with CE approval for intravitreal administration. The CE approval for sterile single use syringes covers dosage and sterility, but not the special needs associated with intravitreal administration. The choice of syringe and associated equipment therefore have to be based on a risk assessment. The intravitreal administration includes increased patient risk regarding sterility (infection), particles (inflammation), injection volume (ocular pressure), silicone oil (floaters in the vision) and technical performance (leakage and compatibility with needle). The aim of this work was to find the syringes, associated equipment and compounding process that present least risk to the patients.
What was done?
Oslo hospital pharmacy delivers ready to use syringes for intravitreal administration of drugs for wet age-related macular degeneration. The pharmacy has in cooperation with the eye department at Oslo university hospital done a risk assessment in 2023 to decide syringes and associated equipment for compounding and administration.
How was it done?
The syringes historically used for intravitreal administration in Norway are Insulin syringes with prefixed needles (BD), Inject F syringes (BBraun) and Zero Residual syringes (SJJ Solutions). The needles used are TSK Low Dead Space needles and Zero Residual needles. The compounding methods are filling of the ready to use syringe from a bulk syringe by a needle or use of a Zero Residual bubble adaptor. All ready to use syringes are compounded in isolators with grade A in the working chamber, delivered with needle or cap, and packed in sterile bags. The risks associated with each syringe, needle and compounding process were assessed with a Failure Mode Effects Analysis Method.
What has been achieved?
The risk assessment shows that the risk to the patients are lowest when administering drugs for wet age-related macular degeneration with Zero Residual syringes and needles, filling the syringes with bubble adaptor and deliver with cap. This will give the lowest risk score regarding sterility, particles, injection volume, silicone oil and technical performance.
What next?
This work is relevant for other pharmacists and prescribing practitioners when assuring that syringes and associated equipment are of appropriate quality and suitable for intended use.