MRSA bacteraemia, C. difficile and an unknown hepatitis B status
A 62-year-old man died in hospital of meticillin-resistant Staphylococcus aureus (MRSA) bacteraemia. In his final week he had profuse Clostridioides difficile diarrhoea. His hepatitis B status is unknown, and a nurse sustained a needle-stick injury while taking blood two days before death. The body is three days post-mortem, with a draining intravenous site on the right forearm and faecal soiling of the perineum and thighs. The family want embalming and a viewing. The preparation room has a downdraft table, a closed drainage system and standard PPE stock. A colleague suggests 'just doing a light embalming' to reduce the risk.
1. Carry out the risk assessment. Which organisms matter here, by which routes, and which of the three changes your practice most?
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MRSA. Spread by direct and indirect contact - hands, contaminated surfaces, dressings, the draining IV site. It does not aerosolise meaningfully. Standard contact precautions plus careful hand hygiene and surface disinfection deal with it; it is the least awkward of the three in practice.
C. difficile. Spores. Spread by contact, resistant to alcohol gels and surviving for long periods on surfaces and equipment. This changes my decontamination: soap and water for hands, chlorine-based disinfectant at sporicidal strength for the table, trolley and floor, and disposable equipment wherever possible. It is also the organism most likely to contaminate the preparation room environment around the perineum.
Hepatitis B. Bloodborne, and the one with the highest consequence for the individual embalmer. It is stable in dried blood, infectious at very small volumes, and there is a vaccine and post-exposure pathway. The draining IV site and any sharp in the body are the relevant hazards, plus the possibility of sharps concealed in wrappings.
What changes practice most. Not the organism identity - it is the bloodborne route, because it is invisible, it survives in dried blood, and the consequence of a single inoculation injury is serious. MRSA and C. difficile change my cleaning and hand hygiene; hepatitis B changes how I handle every sharp, every drain and every splash, and drives me to confirm my own vaccination status rather than to ask about the deceased's.
Key point. I would apply the same controls to this body as to any other. Knowing the status is useful for post-exposure management, not for deciding whether the precautions are needed.
2. Set out the practical controls you would apply from arrival of the body to disposal of the waste.
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Arrival and handling. Accept and keep the body in a closed, labelled pouch; minimise handling and avoid unnecessary movement that could express fluid. The IV site is covered with an impermeable dressing before transfer to the table.
PPE, in order. Nitrile gloves (double-gloving for the soiled areas), long-sleeved impermeable gown, plastic apron, eye protection and a fluid-resistant mask if there is any likelihood of splash. Remove in the correct order at the end, with hand hygiene at each step.
At the table. Work on the downdraft table with extraction running. Closed drainage - the drain tube goes into a sealed container, not into an open sink or bucket. No arterial spray: keep the injection rate controlled and keep the drainage point covered. Instruments kept in a tray, not on the table surface. No eating, drinking or handling of a phone with gloved hands.
Handling soiled areas. Clean the perineum and thighs with disposable wipes before starting; bag immediately as clinical waste. Hand washing with soap and water, not alcohol gel, because of the spores.
Spills and disinfection. Blood or body fluid on surfaces: absorb, then chlorine-releasing disinfectant at around 10,000 ppm available chlorine for blood spills. Surfaces contaminated by faeces: sporicidal chlorine at 5,000 ppm with adequate contact time. Alcohol is not adequate against C. difficile spores. Table, trolley, tap handles, door handles and the drain container are all cleaned at the end.
Sharps. Any needle, cannula or blade removed goes straight into a sharps container at the point of use, never recapped, never left on the trolley. The IV cannula is removed and disposed of as sharps.
Waste. Clinical waste for all contaminated disposables, correctly bagged and labelled; linen bagged as infected linen; the room cleaned and left with extraction running.
Documentation. Record the controls used and any exposure incident, because post-exposure management depends on a contemporaneous record.
3. A colleague suggests 'just doing a light embalming' to reduce the risk. Evaluate that suggestion.
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It does not reduce exposure. The hazards here are contact with contaminated fluid, splash, and sharps. All of those occur in the first minutes of any embalming, whatever the volume of fluid used. A shorter procedure may reduce the duration of exposure, but it does not reduce the number or severity of exposure events.
It creates a worse body to handle later. A partial embalming leaves incomplete fixation in the trunk and viscera. Over the following days the body will continue to decompose, will need more handling, more aspiration, more leaking and more corrective work - at which point the staff dealing with it may be less prepared and less well equipped than they would have been at the outset.
It is a false economy medically and commercially. The family have asked for embalming and a viewing. If the result is poor, the corrective work will involve more contact, not less.
What I would say. The choice is not between light and full embalming as a risk-control measure. It is between doing a properly controlled full embalming under standard precautions, or declining the case and explaining why. I would do the former, with the controls above, and record the decision. If the team were not competent or equipped to do it safely, declining and referring on would be the correct answer.