Advanced CPhT study materials
Advanced CPhT study resources

Spill in the Negative-Pressure Hazardous Drug Room

Advanced CPhT · Put your knowledge to work in context.

All case studies

Spill in the Negative-Pressure Hazardous Drug Room

You are the IV room technician in a hospital oncology service. While preparing a 1,000 mg cyclophosphamide CSP in a Class II biological safety cabinet inside a negative-pressure hazardous drug room, the syringe-to-tubing connection separates. Roughly 5 mL of drug drips onto the work surface and onto your chemotherapy-rated glove. There is no visible skin contact. The dose is due in 45 minutes for a patient already in the infusion chair, and a second patient's CSP is queued behind it. You are the only technician on shift; the pharmacist is at the far end of the department and the room's door seal is part of what maintains negative pressure.

1. Give the immediate sequence of actions, in order, and explain the reasoning for the ones that would be tempting to skip.

Read the worked answer

Sequence:

  1. Stop and do not exit the room. Leaving breaches the negative-pressure envelope and drags contamination into the ante-room and corridor. Containment first.
  2. Keep PPE on - gown, gloves, eye/face protection. The instinct to strip the contaminated glove immediately is wrong inside the room; you contain, then decontaminate, then doff.
  3. Contain the spill using the chemotherapy spill kit: absorbent pads over the liquid, working from the outside of the spill inward so you do not spread it, then place contaminated materials into the chemo waste container. Do not use a plain paper towel from the bench, and do not let the liquid reach a drain.
  4. Deactivate and clean per the SDS and your policy - typically a deactivating agent (sodium hypochlorite solution) followed by detergent and water, applied with the correct contact time. Skipping the deactivation step leaves active drug on the surface even though it looks clean.
  5. Assess your own exposure - inspect the glove and skin. No visible contact is not the same as no exposure; note the glove type, whether it was changed, and any sensation or visible contamination.
  6. Doff PPE in the correct order and wash hands at the sink inside or immediately adjacent, then exit.
  7. Notify the pharmacist and the designated person for occupational exposure and hazardous drug incidents.

What is tempting to skip and why you cannot: the contact time on the deactivating agent (shortening it is invisible and leaves residue); the PPE doffing order (the most common self-contamination point); and the notification (a spill that is not reported cannot trigger exposure follow-up or a review of why the connection failed).

2. Does the dose go out on time? Decide and justify, including what you would communicate to the infusion nurse and prescriber.

Read the worked answer

No - the dose does not go out on the original schedule, and the decision is not close.

Reasoning:

  • The preparation was interrupted mid-process. A CSP that was in an open transfer during a spill cannot be assumed sterile, and you cannot verify how much drug was delivered versus lost. Guessing at the volume in a 1,000 mg cyclophosphamide dose is a dosing error, not a time-saver.
  • The BSC work surface has been contaminated and requires decontamination before any further compounding. Compounding the second queued CSP in a cabinet that has not been decontaminated would put a second patient at risk.
  • The spill also consumed time and materials (spill kit, glove change, surface decontamination), so the original timeline was never achievable.

What to say, and to whom:

  • To the infusion nurse, immediately: "The cyclophosphamide preparation was interrupted by a spill in the IV room. The dose will be delayed approximately [X] minutes and will be remade. Please do not begin the infusion and keep the line patent per the regimen's hydration plan." Give a realistic time, not "soon." A nurse managing an anxious patient needs a number and a reason.
  • To the pharmacist: the need to remake, the need for additional drug/vial, and the need to assess whether the delay affects the regimen's timing or premedication schedule.
  • To the prescriber, if the delay is clinically material (for example, premedications already given, or a regimen where timing matters): the pharmacist makes this call, but you supply the facts and the new estimated time.

The judgment being tested: schedule pressure in an IV room is constant and it is exactly the pressure that produces contaminated or mis-dosed CSPs. "Due in 45 minutes" is a reason to communicate early, not a reason to salvage an unverifiable dose.

3. What gets documented and investigated afterward, and what is the most likely root cause you would look for?

Read the worked answer

Documentation:

  • An incident report covering the drug, concentration, volume spilled, location, time, PPE in use, whether any skin or mucous membrane contact occurred, and the cleanup agents and contact times used.
  • An occupational exposure note for yourself, including the glove type and integrity and whether any post-exposure monitoring is indicated per policy.
  • The disposal record for the chemo waste generated.
  • Notification record: pharmacist, supervisor, and any exposure or safety officer contacted.

Investigation:

  1. The connection that failed. Syringe-to-tubing separation is overwhelmingly a device or technique issue: a luer connection not fully engaged, a tubing set incompatible with the syringe, over-pressure during a push, or a repeated-use workaround. Reproduce the setup with an empty syringe and check the actual components in use.
  2. Was the correct device used? Confirm the syringe and set are on the approved list and were assembled per the manufacturer's instructions.
  3. Work practice review. Was the transfer performed at the correct distance inside the BSC, with the right technique, and was the pressure in the vial managed?
  4. Environmental verification - surface wipe sampling if your program does it, and confirmation that the cabinet and room pressure readings are within range after cleanup.
  5. Training and competency - was this individual's hazardous drug competency assessed recently, and does the module cover this failure mode?

Most likely root cause to check first: the physical connection and the assembly technique, not the person. A separation is a reproducible mechanical event; if it happened once, it will happen again to someone else unless the component or the technique changes. Report it to the device/vendor side as well - a single separation in a 1,000 mg cytotoxic dose is worth a product complaint, because the next one may involve skin contact.