Scalpel Injury During a Preserved-Specimen Dissection
During a 45-minute chicken wing dissection, 24 students use scalpels and probes. A student wearing latex gloves punctures the left index finger with a scalpel; the cut bleeds through the glove. A second student has a known latex allergy and is wearing nitrile gloves. The room has a sink but no eyewash, the first-aid kit is in the main office, and the specimens are preserved in formalin, whose odor is strong. The teacher has 22 minutes left and a state practical exam next period. Students are asking whether to continue. The cut is superficial but bleeding freely; the scalpel fell to the floor and was picked up bare-handed by another student. Only one sharps container is at the front desk, 10 m away.
1. State the immediate actions the teacher should take, in order, and explain why each is necessary.
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Stop the dissection and direct all students to put down instruments. Put on gloves, remove the injured student's glove, and wash the wound with soap and running water for at least 15 minutes; do not use bleach or squeeze the wound. Cover the cut and send the student to the school nurse or office for evaluation and documentation. Treat the dropped scalpel as contaminated: do not let anyone handle it bare-handed; use tongs or a dustpan and place it in the sharps container. Check the latex-allergic student for symptoms and keep latex gloves away from that student. Because formalin vapor is strong, increase ventilation or end the lab if the odor is excessive. The teacher should not continue the dissection with the same group in the remaining 22 minutes; the priority is exposure control, not finishing the activity. Complete an incident report and notify administrators according to school policy.
2. Identify the safety failures in this scenario and describe changes that would prevent a recurrence.
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The main failures are inadequate supervision of sharp instruments, bare-handed pickup of a dropped scalpel, no immediate sharps container at the station, and a first-aid kit stored away from the lab. The teacher also allowed a formalin-preserved specimen activity without confirming ventilation and without a clear stop-work plan. Prevention includes a pre-lab safety briefing, a signed safety contract, direct instruction on scalpel technique and one-way cutting away from the body, and a rule that dropped sharps are never picked up by hand. Place a sharps container within arm's reach of every dissection station and keep a first-aid kit in the room. Provide nitrile gloves for all students and never require latex. Check ventilation before using preserved specimens and substitute less hazardous preservation if possible. Limit group size so the teacher can see every scalpel, and rehearse the stop-work procedure before handing out instruments.