Determination of Smoke Particulates and Formaldehyde Removal from the Surgical Site by a Smoke Evacuator

Background: Modern smoke evacuators are equipped with high-efficiency filters capable of capturing particulates generated by electrosurgery. However, the efficacy of an evacuator also depends upon the design of the device that captures the smoke. This study was performed to evaluate the removal of particulates and formaldehyde in smoke at the surgical site by the Megadyne Smoke Evacuator and Telescoping Smoke Evacuator Pencil.

Methods: Electrosurgery was performed on ex vivo porcine liver in an operating room setting. Peak levels of PM2.5, PM10, total particles and formaldehyde were monitored at 30 cm above the electrosurgical site, i.e., at the level of the surgeon’s head. Measurements were made and compared with the smoke evacuator turned on and off.

Results: Use of the smoke evacuator reduced levels of PM2.5, PM10, total particles and formaldehyde at the surgical site by over 99% (p<0.001).

Conclusion: The combination of the Megadyne Smoke Evacuator and Telescoping Smoke Evacuator Pencil effectively removed smoke from the region where particulates and formaldehyde are most concentrated. By lowering the concentration of particulates and volatile organic compounds at the surgical site, the Megadyne Smoke Evacuator can help to improve air quality in the operating room and respiratory comfort of the staff.

Keywords: Smoke, Plume, Evacuation, Particulates, Formaldehyde.