The Diameter Index Safety System refers to the interface between which components?

The Diameter Index Safety System refers to the interface between which components?

• A. Pipeline source and anesthesia machine
• B. Gas cylinders and anesthesia machine
• C. Vaporizers and refilling connectors attached to bottles of volatile anesthetics
• D. Float and tapered flow tube on machine manifold

Answer: (A)

Diameter Index Safety System focuses on preventing misconnections between different medical gas pipelines and the anesthesia machine. It governs the interface where the hospital’s wall or central gas supply attaches to the machine, using standardized diameters so that only the correct gas line can mate with the machine’s inlet. This safety feature protects against delivering the wrong gas to the patient. The other interfaces are governed by different safety systems or components: cylinders connect to the machine via the pin-index system (not DISS); vaporizers and their bottle fittings have separate safety connections; and the flowmeter components (like the float and tapered flow tube) are part of the metering system, not the pipeline-to-machine interface. So, the correct concept is the interface between the pipeline gas source and the anesthesia machine.

Diameter Index Safety System focuses on preventing misconnections between different medical gas pipelines and the anesthesia machine. It governs the interface where the hospital’s wall or central gas supply attaches to the machine, using standardized diameters so that only the correct gas line can mate with the machine’s inlet. This safety feature protects against delivering the wrong gas to the patient. The other interfaces are governed by different safety systems or components: cylinders connect to the machine via the pin-index system (not DISS); vaporizers and their bottle fittings have separate safety connections; and the flowmeter components (like the float and tapered flow tube) are part of the metering system, not the pipeline-to-machine interface. So, the correct concept is the interface between the pipeline gas source and the anesthesia machine.