If you were using a central supply nitrous oxide sedation system, which of the following components would you have that would NOT be used on a portable unit?

In a central supply nitrous oxide sedation system, certain components are specifically designed for stationary setups and are not found in portable units.

The presence of multiple flowmeter heads is typical in a central system because it allows for the monitoring and adjustment of gas flow for multiple workstations or procedures simultaneously. Portable units generally have a single flowmeter integrated onto the device itself, making it impractical to have multiple flowmeters since they are designed for individual use.

Large cylinders are another feature common with central supply systems. These systems are designed to accommodate large volumes of nitrous oxide and oxygen, ensuring a consistent supply for multiple uses. Portable units, on the other hand, rely on smaller, transportable cylinders that are easier to manage and replace.

Copper pipes are utilized in central systems for delivering gases throughout the facility. These pipes establish a permanent infrastructure that allows for a constant flow of gases from central tanks to various treatment areas. Portable units do not include this type of piping, as they are standalone devices requiring only connections to portable tanks.

Thus, all these components—multiple flowmeter heads, large cylinders, and copper pipes—are integral to a central supply system but not present in portable units, making the answer comprehensive and aligned with the characteristics of both systems.