Monday Morning After a Positive Spore Test

Take the sterilizer out of service. Tag it, stop running loads, and do not release anything from it.

Quarantine and recall. Friday's wrapped loads stay in the cabinet and are not released - a positive biological indicator invalidates the entire load regardless of what the chemical indicators showed. Then work backwards: everything processed since the last documented negative spore test must be recalled and reprocessed. Here that date is uncertain, and the log is missing for three weeks - so the correct, defensible position is that all loads since the last verifiable negative are suspect, not just Friday's.

Items already used. Cassettes and handpieces from the mid-week loads went onto patients. Reprocessing is not possible; the practice must follow its written policy and consult its dental infection-control resource, the sterilizer manufacturer, and possibly the state health department about patient notification. The transmission risk from a failed cycle is low, but the decision cannot be made informally at the front desk, and it must be documented.

Do not restart on a hunch. After the cause is corrected the unit must pass three consecutive biological indicators (with controls, per the manufacturer's instructions) before returning to patient care, and that must be documented - otherwise today's loads are just more of the same unverified output.

Possible causes: overloading the chamber or stacking pouches so steam cannot circulate; pouches overfilled or sealed with too little space; hinged instruments processed closed instead of open; instruments not cleaned or with dried bioburden before packaging; air not fully removed (leak, worn door gasket, clogged filter, vacuum pump fault) in a 12-year-old pre-vacuum unit; incorrect cycle selected for the packaging type; wet packs; sterilizer in need of calibration or service; and, separately, biological indicator storage or incubation error - though a negative control argues against that last one.

Why the log matters. The spore test is a point-in-time check, and the log is what defines the boundary of the recall. With 12 days between tests and three weeks of missing entries, the practice cannot say which loads were verified. Weekly biological monitoring is the minimum standard, daily is preferable, and each load's mechanical parameters and indicator results should be recorded. The paperwork gap has converted a single suspect load into a three-week question, which is exactly the situation the log exists to prevent.

Also check the office's sterilization monitoring records retention and whether the person who ran and read the test was trained and competent to do it.

The plan fails on two points. Immediate-use (flash) sterilization is intended for an item that is needed right away and cannot be packaged and stored in advance. Items processed unwrapped must be transported in a covered container and used immediately; they cannot be repackaged and returned to the cabinet as if they were terminally sterilized, because the wrap and the drying phase of a normal cycle are part of what allows storage. Using flash cycles to cover a broken sterilizer for a full day is exactly the 'convenience and scheduling' use that guidance rules out, and it also runs an unverified unit faster and more often.

What actually fits:

• Borrow capacity from a neighbouring practice or the oral surgeon next door, or lease a loaner sterilizer, with the same biological monitoring applied.
• Use pre-sterilized single-use disposable instruments where they exist for the procedures scheduled.
• Triage the day - defer non-urgent hygiene and elective restorative care, keep urgent and surgical care, and tell patients honestly why.
• If flash must be used for a genuine urgent item, keep it to that item, transport it covered, use it immediately, and never for implants.

In all cases the repaired unit still has to pass three consecutive biological indicators before routine use resumes.