Particulate matter emissions during autopsies: a method to reduce exposure

Particulate matter emitted during autopsies can serve as a vector for numerous viruses or bacteria and can lead to infections. Reducing the exposure of those particles in indoor working environments is, therefore, an important issue. To assess the health risk for employees in forensic medicine, we measure particulate matter in the ambient air during autopsies by using an aerosol spectrometer. The autopsies were performed with either an ordinary oscillating saw or an adapted saw with a suction unit. The particle emissions from both saws were compared to each other in order to evaluate whether a technical adaption leads to a particle reduction. Furthermore, the particle exposure reduction by wearing a face mask and variations in the background concentration in the room were analyzed. High particle concentrations were measured while using the ordinary saw. By using the adapted saw or wearing a face mask, the particle exposure could mostly be avoided. On the majority of the working days, an increase in the background concentration could be observed. Based on this knowledge, the use of a proper suction unit and wearing a face mask during autopsies is necessary. Besides, it is important to have sufficient ventilation in the room so that long-lasting high background concentrations can be prevented.

Automated summary

Particulate matter emitted during autopsies may act as a medium for the transmission of various viruses or bacteria, leading to infections. Thus, it is crucial to reduce the exposure to these particles in indoor working environments. In this study, particulate matter in the ambient air during autopsies was measured using an aerosol spectrometer. The particle emissions from using an ordinary oscillating saw and an adapted saw with a suction unit were compared to evaluate the effectiveness of technical adaptation in reducing particles. Additionally, the impact of wearing a face mask and variations in room background concentration were analyzed. The results showed high particle concentrations while using the ordinary saw, but the exposure could be mostly avoided by using the adapted saw or wearing a face mask. On most working days, an increase in background concentration was observed. Based on these findings, the use of a proper suction unit and face mask during autopsies is necessary, along with sufficient ventilation to prevent long-lasting high background concentrations.