VanCleave Andrea M, Jones James E, McGlothlin James D, Saxen Mark A, Sanders Brian J, Vinson LaQuia A
Resident in Pediatric Dentistry, James Whitcomb Riley Hospital for Children, Indiana University School of Dentistry.
Anesth Prog. 2014 Winter;61(4):155-61. doi: 10.2344/0003-3006-61.4.155.
In this study, a mechanical model was applied in order to replicate potential surgical fire conditions in an oxygen-enriched environment with and without high-volume suction typical for dental surgical applications. During 41 trials, 3 combustion events were measured: an audible pop, a visible flash of light, and full ignition. In at least 11 of 21 trials without suction, all 3 conditions were observed, sometimes with an extent of fire that required early termination of the experimental trial. By contrast, in 18 of 20 with-suction trials, ignition did not occur at all, and in the 2 cases where ignition did occur, the fire was qualitatively a much smaller, candle-like flame. Statistically comparing these 3 combustion events in the no-suction versus with-suction trials, ignition (P = .0005), audible pop (P = .0211), and flash (P = .0092) were all significantly more likely in the no-suction condition. These results suggest a possible significant and new element to be added to existing surgical fire safety protocols toward making surgical fires the "never-events" they should be.
在本研究中，应用了一个力学模型，以模拟在富氧环境中，有无牙科手术应用中典型的大容量抽吸情况下潜在的手术起火条件。在41次试验中，测量到3次燃烧事件：一次可听见的爆响、一次可见的闪光和完全点火。在至少11次无抽吸的21次试验中，观察到了所有3种情况，有时火势严重到需要提前终止试验。相比之下，在20次有抽吸的试验中有18次根本没有发生点火，在发生点火的2例中，火势在性质上要小得多，类似蜡烛火焰。对无抽吸试验和有抽吸试验中的这3次燃烧事件进行统计学比较，无抽吸情况下点火（P = 0.0005）、可听见的爆响（P = 0.0211）和闪光（P = 0.0092）的可能性均显著更高。这些结果表明，在现有的手术消防安全规程中可能要增加一个重要的新因素，以使手术起火成为应有的“零事故”。
