Failed Spore Test and a Hepatitis C Patient on Monday
At a four-chair practice, hygienist Elena notices the autoclave log has no spore test for six weeks. She runs a biological indicator on Friday at 4:40 p.m.; it fails. The office manager says, 'Run it again and use the fast cycle Monday-no one has gotten sick.' Elena sees unpackaged instruments in an open drawer, handpieces wiped with a disinfectant wipe only, and an ultrasonic scaler reservoir filled with tap water. The office uses a 12-minute gravity cycle and chemical indicator strips as its only routine monitoring. A patient with chronic hepatitis C is scheduled Monday for scaling and root planing, and the dentist is on vacation.
1. What immediate infection-control actions should Elena take, and which practices in the office are deficient under Montana/CDC standards?
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Elena should stop using the autoclave immediately. A failed biological indicator means the load may not be sterile. The unit should be tagged out of service, serviced, and retested before any load is released; she should not simply run it again and use it Monday. All instruments processed since the last negative spore test should be quarantined and reprocessed or discarded. Handpieces must be cleaned and heat-sterilized between patients; wiping with a disinfectant is not sterilization. Instrument packs should be dated and stored in closed cabinets, not open drawers. The ultrasonic reservoir should follow the manufacturer's water-quality instructions; tap water may be acceptable only if the manufacturer allows it. Weekly biological monitoring is the CDC standard, and chemical indicator strips do not replace spore testing. Because the dentist is away, Elena should notify the owner or infection-control lead and document everything in writing.
2. How should the office handle the hepatitis C patient and any possible exposure to other patients?
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The hepatitis C patient should not be refused or treated with compromised instruments. HCV is not a reason to delay care; standard precautions apply to every patient. The office must determine whether any patient was exposed to a non-sterile instrument since the last negative spore test. With the dentist and legal counsel, it should notify those patients, offer testing per public-health guidance, and document the look-back. The Board and possibly public health authorities may need to be notified. Elena should not treat until sterilization is validated. If the owner directs her to proceed with unsafe instruments, she should refuse and report the conduct to the Board; practicing with unsafe infection control is unprofessional conduct and exposes patients to preventable harm.