Surgical smoke

The hidden hazard in every operating room. What it is, what it contains, and why it matters.

Walk into almost any operating room during electrosurgery, and you will see a faint haze drifting above the surgical field. It might look like steam. It is not.

Surgical smoke, sometimes called surgical plume, is the aerosolized by-product released whenever tissue is cut, coagulated or vaporized. It is produced by electrosurgical pencils, lasers, ultrasonic scalpels and a wide range of other thermal surgical devices. Over the course of a single working day, an unprotected operating team can inhale a remarkable volume of it.

For decades, this exposure was treated as an unavoidable part of the job. The evidence now tells a different story.

What is surgical smoke made of?

Surgical smoke is roughly 95% water vapor. That sounds reassuring until you look at the remaining 5%, which is where the problem lives.

The hazardous fraction contains a complex mixture of physical, chemical and biological contaminants. A useful way to think about it is the framework many OR safety teams now use: the “PCBs” of surgical smoke.

Physical

Ultra-fine particulate matter that is small enough to penetrate deep into the lungs, bypassing the body’s natural respiratory defenses and reaching the alveoli where gas exchange happens.

Chemical

Over 150 hazardous chemicals, including benzene and formaldehyde. Around 40 of them are known or suspected carcinogens, with a chemical profile that has been compared to cigarette smoke.

Biological

Viable bacteria and viruses, including documented transmission risks for human papillomavirus (HPV) and other infectious agents. The biological load is particularly high during procedures involving infected tissue.

How serious is the exposure?

The numbers are striking once you see them in context.

27 to 30 cigarettes per day. A single day’s exposure to unfiltered surgical smoke has been estimated as equivalent to smoking 27 to 30 unfiltered cigarettes (Hill et al., 2012).
150 hazardous chemicals. Surgical smoke contains a chemical cocktail that includes benzene, formaldehyde, hydrogen cyanide and toluene (Barrett & Garber, 2003).
2× respiratory problems. Perioperative nurses have been shown to experience approximately twice the rate of many respiratory problems compared with the general population (Ball, 2012).
HPV transmission documented. Active human papillomavirus has been recovered from surgical plume, and transmission to surgeons has been reported in the medical literature.

This is not theoretical exposure. It is the daily working environment for surgical teams worldwide.

Who is affected?

Surgical smoke is an occupational hazard for everyone in the operating room:

Surgeons performing the procedure
Anesthetists and anesthesia teams
Scrub nurses and circulating nurses
Surgical technologists and assistants
Trainees and observing staff
Patients, particularly during long procedures

Standard surgical masks provide very limited protection against the ultra-fine particles in surgical plume. Most masks are designed to block droplets and larger particulates, not the sub-micron material that dominates the hazardous fraction of smoke.

Why is this still happening?

Awareness of surgical smoke risks has grown significantly in the past decade, and several countries have introduced regulations or strong recommendations for smoke evacuation in operating rooms. Yet adoption is uneven, and many operating teams still work without effective evacuation.

The reasons are familiar: legacy practice, equipment cost concerns, the perception that smoke evacuation slows the workflow, and a simple cultural inertia that says, “we have always done it this way”.

The evidence base is no longer ambiguous. The question for hospitals and surgical teams is no longer whether to evacuate surgical smoke, but how to do it well.

What good smoke evacuation looks like

Effective smoke evacuation is not just about having a filtration unit in the corner of the room. It depends on three things working together:

Capture at the source. Smoke must be removed at the tip of the instrument, before it disperses into the room and the breathing zone of the team.
Powerful, validated filtration. Multi-stage filtration with ULPA and carbon filters to trap particulates, chemicals and biological material before air is returned to the OR.
Workflow that does not get in the way. If smoke evacuation slows the surgeon down or requires extra hands, it will not be used consistently. Integration matters.

This is what CIMPAX builds. Electrosurgical pencils with smoke evacuation integrated into a single instrument, paired with a compact, quiet and powerful filtration system that fits into any OR setup.

CIMPAX and the case for cleaner air in the OR

Protecting surgical teams from the daily risks of plume exposure is one of the reasons CIMPAX exists. We design, manufacture and supply integrated smoke evacuation solutions, and we work to raise awareness of surgical smoke as the occupational hazard it actually is.

If you would like to learn more, train your team, or evaluate smoke evacuation options for your operating room, we would be glad to talk.

References

Hill DS, O’Neill JK, Powell RJ, Oliver DW. Surgical smoke: a health hazard in the operating theatre. J Plast Reconstr Aesthet Surg. 2012;65(7):911–916.
Barrett WL, Garber SM. Surgical smoke: a review of the literature. Surg Endosc. 2003;17(6):979–987.
Ball K. Compliance with surgical smoke evacuation guidelines: implications for practice. ORNAC J. 2012;30(1):14–16.