Which distribution system requires supplies to be duplicated?

The exchange cart distribution system necessitates that supplies be duplicated to ensure continuous availability of sterile items. In this system, two sets of carts are utilized—one set is in use in the operating room, while the second set is replenished in the sterile supply area. This duplication allows for an uninterrupted supply of instruments and materials needed for surgical procedures.

The purpose of having duplicate sets is to maintain an efficient workflow. When the cart used in the surgical setting is returned for restocking, the duplicate set is already prepared and can immediately be sent back to the operating room without delay. This ensures that there is no shortage of necessary supplies during surgical cases, ultimately promoting patient safety and operational efficiency.

Other distribution systems such as demand, par level, and case cart do not require duplication in the same way. Demand systems rely on requisitions made at the point of use based on immediate needs, par level maintains a set quantity of supplies on hand without needing duplicate sets, and case carts are prepared in advance for specific surgical cases, focusing on the items required for that single procedure.