Needle-stick injury during an antenatal immunization session
At a primary health centre, a 28-year-old staff nurse is vaccinating women during an antenatal session. She gives a TT injection to a 22-year-old woman, withdraws the needle, and tries to recap it. The wall-mounted sharps container is about three-quarters full and its opening is partly blocked by a folded piece of cardboard. The needle pierces the side of her right index finger and a drop of blood appears. She squeezes the finger, wipes it with a spirit swab, and completes the remaining 40 minutes of the session. The medical officer is away at a district meeting. There is no displayed post-exposure protocol, and the only PEP drugs in the cupboard expired two months ago. At the end of the day, a sweeper empties the sharps container into a yellow bag and ties it.
1. List the immediate actions the nurse should have taken after the needle-stick injury and explain the reason for each, including what she should do now that several hours have passed.
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Immediate steps that should have been taken:
- Wash the wound with soap and running water; do not squeeze or rub. Squeezing can push contaminated blood deeper and is not recommended.
- Allow it to bleed briefly under running water, then apply an antiseptic such as povidone-iodine or chlorhexidine; do not use spirit or caustic agents.
- Report immediately to the medical officer or duty doctor and enter the incident in the needle-stick register.
- Assess the source patient's HIV, hepatitis B and hepatitis C status with consent, and check the nurse's own hepatitis B vaccination status.
- Start HIV post-exposure prophylaxis as soon as possible, ideally within 2 hours and no later than 72 hours; give hepatitis B vaccine or immunoglobulin and tetanus prophylaxis as indicated.
Because several hours have passed, she should still report and start PEP today. The expired PEP stock means she must be referred immediately to the district hospital or ART centre; delay reduces effectiveness. Baseline HIV testing and follow-up at 6 weeks, 3 months and 6 months should be arranged.
2. Identify the biomedical waste segregation errors in this incident and state the correct colour-coded category or container for each item mentioned.
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Errors and correct practice:
- Recapping a needle after use - recapping is a common cause of needle-stick injury. The needle should be dropped directly into the sharps container without recapping.
- Using a sharps container that is three-quarters full with a blocked opening - containers must be replaced when three-quarters full or when the opening is obstructed. Waste must never be forced in.
- Emptying sharps into a yellow bag - sharps must never be transferred to another container. The sealed sharps container itself is the final container.
Correct categories:
- Needle and syringe: white translucent puncture-proof sharps container, sealed when three-quarters full, labelled with date and PHC name.
- Blood-stained cotton swab: yellow bag (soiled waste).
- The folded cardboard blocking the opening is general waste and should not be used as part of the sharps container.
The sweeper should not handle sharps. Only trained staff should replace and seal containers, which are then stored in a designated area and handed to the authorised biomedical waste handler with a record.
3. What system-level corrective actions and records should the PHC put in place after this incident?
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System actions:
- Display the post-exposure protocol at every injection point and in the labour room, including who to call after hours.
- Keep a PEP kit with unexpired drugs, hepatitis B vaccine and tetanus toxoid; check expiry monthly and record it.
- Train all staff in safe injection practice, no recapping, and correct sharps container replacement.
- Place sharps containers at eye level within arm's reach and replace them at three-quarters full.
- Maintain an incident register with date, time, type of exposure, source status and action taken; review every incident at staff meetings.
- Audit waste segregation weekly and ensure colour-coded bins are available.
- Vaccinate all health workers against hepatitis B and record immunity.
The immediate supervisor should be informed, and the incident should be reported to the district health office as required. The aim is not to blame the nurse but to correct the conditions that made the injury likely.