Sterile Processing
Week 2026.

Decontamination

Good cleaning starts before the device reaches CSSD. Prevent soil from drying, arrange safe transport and wear the PPE needed for the task. Follow the IFU when taking the device apart, cleaning, rinsing and inspecting it. If soil remains, the device needs to be cleaned again; extra time in the sterilizer cannot make up for it.

Make sure the cleaning process can reach every surface it needs to reach. Check the specified cleaning chemistry, dilution, contact conditions and rinsing requirements. A completed machine cycle tells you that a cycle ran; inspection and validated cleaning checks help you assess the result. If those records disagree, review how the device was prepared and how the process was carried out.

For flexible endoscopes, check the exact model’s channel map and the reprocessor connections. Automated processing does not replace a manual step required by the IFU. For reusable high-level disinfectants, check both the minimum effective concentration and the permitted reuse life; neither check replaces the other.

Inspection & assembly

Before assembling a set, check each clean device for remaining soil, damage and proper function. Open hinges and arrange removable parts as the manufacturer directs. Take damaged instruments out of service. Remember that a surface can look clean while an area you cannot see still needs attention.

Also consider how the device will be used. A device that enters sterile tissue needs sterilization. If it cannot tolerate heat, a compatible processing method is needed; the required outcome stays the same. Check cleanliness, structural integrity and function separately. A pass in one area does not establish a pass in the others.

Packaging

Read the device, packaging and sterilizer instructions together before preparing the set. Protect delicate instruments, avoid excessive density and leave the access needed for the sterilant. Check the seals, labels and internal indicators. If the instructions do not fit together, resolve the conflict before processing.

Think about the whole arrangement: the prepared device, its sterile barrier, the tray and the load. An approved component may still be unsuitable in a particular combination. Changing the density, load mass or layout can affect sterilant access and drying, even when the cycle setting has not changed.

Sterilization

Use the validated cycle and loading pattern, then review the physical, chemical and biological monitoring together. If a release requirement has not been met, hold the load and investigate before release. Monitor implant loads with a biological indicator (BI) and, whenever possible, keep them in quarantine until the BI result is negative.

Each type of monitoring tells you something different. Physical records describe the cycle conditions. Chemical indicators respond to specified process variables. Biological indicators assess the challenge organism under the test conditions, with controls helping you interpret the result. One satisfactory result does not automatically cancel a failure elsewhere.

Follow the procedure for the sterilization method when a BI result is unexpected. CDC treats an isolated positive steam BI for nonimplant loads differently from a positive result in a non-steam process. For non-steam processing, contain items processed after the last negative result until satisfactory performance is restored. For steam, the investigation and repeat results help determine the recall scope. Follow a stricter local policy when it applies.

Air removal is another part of steam-process performance. The Bowie-Dick test checks this function in dynamic-air-removal sterilizers; a temperature record answers a different question. Investigate an unacceptable test before returning the sterilizer to service. Repeated pressure for immediate-use steam sterilization also calls for a review of instrument availability and scheduling, so routine shortages do not drive emergency processing.

Storage & traceability

Once a pack has been processed, protect it from moisture, damage and unnecessary handling. Withhold packs that are wet, torn or opened. Apply the IFU and your facility’s shelf-life policy. Keep a clear record linking each item to its sterilization load and destination so affected stock can be found.

Keep asking two separate questions: was the processing acceptable, and has the package stayed protected since then? Event-related storage considers what has happened to the sterile barrier, while labelled limits and local policy still apply. Your records should let you trace a suspect load forward to its destinations and an individual set back to its processing record.