Needlestick injury from a patient who refuses blood-borne virus testing
During a busy afternoon session a dental nurse recaps a 27-gauge needle by hand after giving an inferior alveolar nerve block to a 34-year-old man and sustains a needlestick injury to the left index finger. The wound is deep and there is visible blood. The patient's record contains no medical history, and when asked about blood-borne viruses he becomes agitated and refuses to consent to any blood test, saying his health information is private. The nurse was vaccinated against hepatitis B as a student but does not know her anti-HBs titre and has never been tested. She is tearful and asks whether she will 'catch something'. The practice manager wants to ask the patient to leave the premises immediately and to tell the rest of the team why.
1. Describe the immediate management of the injury and the post-exposure prophylaxis decisions, including the time frames.
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Wound care: do not squeeze or suck the wound. Wash under running water with soap for several minutes, allow brief free bleeding to flush the tract, then cover it. Do not use bleach, alcohol or other caustic agents - they damage tissue and increase risk.
Risk assessment: a deep percutaneous injury with a hollow-bore needle that had been in tissue, with visible blood, is a significant exposure. Both the source status and the nurse's immune status are unknown, so manage as high risk until proven otherwise.
Hepatitis B: she was vaccinated but her anti-HBs is unknown. Take blood for anti-HBs and baseline serology with her consent, and give hepatitis B immunoglobulin plus a booster vaccine dose without waiting for the result if she is a non-responder or of unknown status. Time matters; involve occupational health immediately.
HIV: post-exposure prophylaxis should start as soon as possible, ideally within 1–2 hours and no later than 72 hours, and continues for 28 days. It is started on risk assessment, not on a source test result, so his refusal must not delay it. Refer her the same day to occupational health or an emergency department that holds PEP.
Hepatitis C: no prophylaxis exists; arrange baseline and follow-up RNA testing, with early treatment if transmission occurs. Check tetanus status and report the incident through the practice system.
2. How would you handle the patient's refusal ethically, and what would you say to him and to the team?
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You cannot test him without consent. Testing a competent adult's blood against his wishes is a battery and a breach of confidentiality; the fact that a staff member has been exposed does not override that, and neither does sending residual blood from the syringe for testing.
What you can do: speak to him privately and calmly. Explain that the request is not an intrusion into his private life but a way to guide time-critical preventive treatment for the nurse. Reassure him that any result would be disclosed only to those treating her, not to his family, employer or the wider practice. Offer counselling and a rapid test with consent.
If he still refuses: manage the nurse as though the source is high risk and document. Some jurisdictions permit source testing under public health law after a significant exposure; seek advice from occupational health or the medical officer of health rather than acting unilaterally.
The manager's proposal is wrong. Ejecting the patient punishes him for an injury caused by a hazardous staff practice, and publicising his status to the team would be a serious breach. Complete his treatment safely or transfer him courteously, and say nothing about him in the waiting room.
Record what was explained, what he was told about confidentiality, his response, the exposure details and the referrals with times.
3. What practice-level changes would you make to prevent recurrence, and how would you handle the staff-side failures this case reveals?
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Root cause: the injury occurred during two-handed recapping, a practice that should not happen. The remedy is a system, not a reprimand.
Engineering and workflow controls: puncture-resistant sharps containers at the point of use and never overfilled; no recapping by hand - if recapping is unavoidable, the one-handed scoop method only; safety-engineered needles where available; a needle guard or a trained assistant to pass and receive the syringe during blocks; a written exposure control plan.
Health surveillance: records of hepatitis B vaccination and anti-HBs titres for every clinical staff member, with booster or revaccination for non-responders. The nurse's unknown titre is a system failure as much as an individual one, and should be corrected for the whole team.
Training and audit: annual sharps and infection control training, audit of sharps container use, and a review of this incident with the team.
Culture: staff must be able to report an injury without fear of blame. The manager's reaction to the patient should not be mirrored in how the nurse is treated, and her own health information is confidential too. A no-blame incident report, a documented corrective action and a follow-up date turn a near miss into a genuine improvement.