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Aerosol Generation During Bone-Sawing Procedures in Veterinary Autopsies.

L Wenner¹, U Pauli², K Summermatter²

¹1 Institute of Animal Pathology, Vetsuisse-Faculty, University of Bern, Bern, Switzerland.

Veterinary Pathology

|January 24, 2017

Summary

Bone-sawing in autopsies generates infectious aerosols, posing risks to personnel. Utilizing ventilated enclosures and powered air-purifying respirators is crucial for mitigating exposure during these procedures.

Keywords:

aerosol autopsy biosafety bone saw occupational health personal protective equipment powered air-purifying respirator ventilation work safety

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Area of Science:

Pathology
Occupational Health
Aerosol Science

Background:

Bone-sawing is common in human and veterinary autopsies.
These procedures can generate infectious aerosols, posing health risks to personnel.

Purpose of the Study:

To investigate aerosol generation during bone-sawing procedures.
To evaluate the effectiveness of containment and personal protective equipment.

Main Methods:

Tested 5 different bone saws (electrical band saw, grinder, oscillating, reciprocating, hand saw).
Measured aerosol particle generation and spread.
Assessed effectiveness of a ventilated sawing cabin and powered air-purifying respirators.

Main Results:

The electrical bone band saw generated the most aerosolized particles (<5 µm), rapidly spreading throughout the autopsy hall.
Other saws also generated concerning particle levels, especially the hand saw.
A ventilated cabin contained aerosols but increased operator concentration; respirators provided protection.

Conclusions:

All bone-sawing procedures in pathology generate hazardous aerosols.
Proper ventilation systems and personal protective equipment (PPE) are essential to reduce infection risk for autopsy personnel.