A surgical fire can last only seconds, yet the investigation may depend on evidence controlled by several different people. The operating team, anesthesia team, hospital, equipment suppliers, and product manufacturers may each hold a different part of the story. The earliest task is to preserve the scene and build one synchronized timeline.
Preserve what burned and what was nearby
Keep damaged drapes, gowns, sponges, tubing, dressings, masks, airway devices, electrodes, light cables, and other disposable items. Do not clean, test, or discard them before the parties can document their condition. Photograph their location, burn pattern, and relationship to the patient and equipment. Product packaging, lot numbers, and expiration information can be as important as the damaged item.
The room itself may contain useful evidence, including video, smoke or alarm data, medical-gas controls, ventilation information, and equipment placement. Witness accounts should be collected promptly, but they should not replace the physical and electronic record.
Build a single second-by-second timeline
Align the anesthesia record, nursing record, operative report, room log, medication administration record, and device clocks. Note when skin preparation began, when draping occurred, when oxygen or nitrous oxide delivery changed, when an ignition device was activated, and when anyone first observed heat, smoke, or flame.
Automatic chart entries can be misleading if they were entered later or copied forward. Audit histories can show when a value was recorded or changed. Compare every timestamp against independent records such as equipment logs and photographs.
Identify the ignition source
Possible ignition sources include electrosurgical units, electrocautery, lasers, drills, burrs, fiberoptic light cables, and other energized equipment. Record the exact device, serial number, accessories, settings, activation history, alarms, maintenance, and post-incident inspection. Preserve cables, pencils, tips, and holsters. Testing should follow a documented protocol so it does not alter the evidence.
A device malfunction and an unsafe use are different possibilities. The investigation should test both without assuming either one at the outset.
Trace oxygen and other oxidizers
Record the oxygen and nitrous oxide concentration, flow rate, delivery route, mask or cannula position, airway circuit, and any disconnection or leak. The location of supplemental oxygen relative to the surgical field may matter, particularly during head, neck, and upper-chest procedures. Communication between the person controlling oxygen and the person activating the ignition source belongs in the timeline.
FDA surgical-fire training materials explain that operating rooms often contain ignition, fuel, and oxidizer elements and emphasize preoperative risk assessment, communication, oxygen management, and correct use of alcohol-based preparations. Those materials help organize an investigation but do not prove how a particular fire started.
Account for every possible fuel
Skin-preparation records should identify the product, lot, amount, application area, pooling, and drying time. Other possible fuels include drapes, gauze, sponges, hair, adhesives, tubing, and equipment coverings. The relevant question is not simply whether a product is ordinarily safe. It is whether its condition, placement, and exposure in this procedure completed the fire sequence.
Separate the response from the origin
Document when the team stopped gas flow and ignition, removed burning material, irrigated or extinguished the fire, protected the airway, called for help, and transferred the patient. An airway fire may require a different response and create different injuries than a skin or drape fire. The response can affect the final harm even when it did not cause the ignition.
Connect the fire to the patient’s injuries
Preserve burn photographs, bronchoscopy findings, wound records, operative reports, pathology, and follow-up treatment. The analysis should address burn depth, airway or inhalation injury, infection, scarring, disfigurement, added procedures, and functional or psychological effects. It should also distinguish fire-related injury from the condition that led to surgery.
A Louisiana medical malpractice lawyer can help coordinate clinical, fire-origin, and product review. The firm’s discussion of evidence in burn-injury claims and guide to preserving complete medical records provide additional context.
Editorial & Legal Accuracy Notice (Louisiana)
Sources checked: September 24, 2026
Fire origin, product condition, professional standards, causation, and Louisiana liability require case-specific investigation and expert review.