“…6 Oxygen-enriched environments occur far more frequently around patients receiving supplemental high-flow oxygen (>3-4 L/ min) compared with those receiving supplemental oxygen at low flow rates (2 L/min). 2,7,8,16,17 The proximity of the oxidiser to the ignition source plays an important role, Draping can create occlusive tenting and trap oxygen, raising its concentration, and many studies suggested open-drape techniques to avoid oxygen pooling. 1,9,17,18 Nitrous oxide also acts as an oxidiser and both increase the likelihood and intensity of combustion in the surgical field in a concentration-related manner.…”