Key-Filler Wrong Agent Prevention — FRCA Primary MCQ

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EasyPhysics & Clinical MeasurementKey-Filler Wrong Agent PreventionFRCA Primary

Regarding vaporiser safety the key-filler system prevents:

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Correct answer: C — Incorrect agent being placed in the wrong vaporiser

The agent-specific key-filler (or keyed-filling) system has a unique collar/adaptor for each volatile agent bottle that only fits the corresponding vaporiser. This prevents accidental filling with the wrong agent which could deliver a dangerously high or low concentration. Modern vaporisers also have calibration specific to one agent.

Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment