A Sharps Injury During a Busy Night Shift
At 02:30 on a busy postnatal ward, a midwife is giving the first intramuscular vitamin K to a 6-hour-old newborn. The baby moves suddenly, and she recaps the needle before disposing of it. While recapping, she sustains a needlestick injury to the tip of her left index finger; it bleeds briefly. The baby's mother has no documented hepatitis B status, and her antenatal record is incomplete because she booked late. The midwife is 12 weeks pregnant, has not checked her own hepatitis B antibody status for several years, and cannot recall whether she completed a primary vaccination course. The sharp is a 23-gauge needle that had just been used for the baby. The ward is short-staffed, and the midwife says she will 'just wash it and finish the round' because the injury is small.
1. What should the midwife do in the first 15 minutes, and what should she not do?
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First aid: wash the wound with soap and running water for at least 15 seconds, allow it to bleed, do not scrub or suck the wound, and cover with a waterproof dressing. Do not continue the drug round. Report immediately to the nurse in charge and the occupational health or emergency department; complete an incident report as soon as possible while the details are fresh. Identify the source: with the mother's consent, request her HIV, hepatitis B surface antigen, and hepatitis C results; if unknown, arrange testing. The baby's vitamin K injection is not a source of bloodborne viruses, but the needle was contaminated with the baby's blood. Check the midwife's own hepatitis B vaccination and antibody status, and her HIV status if required. She is pregnant, which makes prompt risk assessment more important, not less. Do not wait until the end of the shift.
2. Explain the post-exposure management for hepatitis B and HIV, including how pregnancy affects it.
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Hepatitis B: if the source is HBsAg-positive or unknown and the midwife is not known to be immune, give hepatitis B immunoglobulin and start or complete the vaccine series, ideally within 24 hours of exposure. Pregnancy is not a contraindication to HBIG or vaccine. HIV: assess the source's status and the exposure risk. If PEP is indicated, start it as soon as possible, ideally within 1 hour and no later than 72 hours; a commonly used regimen is tenofovir/emtricitabine plus dolutegravir for 28 days. Pregnancy does not contraindicate HIV PEP; discuss with the HIV specialist. Take baseline bloods and arrange follow-up at 6 weeks, 12 weeks, and 6 months. Hepatitis C has no PEP; monitor and refer if seroconversion occurs. Document counselling and confidentiality.
3. What system factors contributed to this incident, and what corrective actions would you recommend?
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Contributing factors: recapping a used needle, a moving baby, no sharps container within arm's reach, staff shortage, and a culture of 'finishing the round' before reporting. Corrective actions: ban recapping; use a sharps container at the point of use; consider safety-engineered needles; ensure hepatitis B vaccination and immunity for all clinical staff; train on immediate reporting; audit incidents; and review staffing at night. The midwife should be offered occupational health follow-up and counselling, and the incident should go through the unit's root-cause or quality-review process. The aim is system improvement, not blame. Document the action plan and share lessons with the ward.