Friberg B E, Burman L G, Friberg S
Department of Orthopedics, Northern University Hospital, Umeå, Sweden.
Acta Orthop Scand. 1998 Apr;69(2):169-72. doi: 10.3109/17453679809117621.
We compared the novel zoned exponential ultra-clean operating room ventilation, needing no extra side-walls with the traditionally used ultra-clean air systems having vertical or horizontal laminar airflow, but requiring extra side-walls. The three units were evaluated with regard to elimination of particles with focus on airborne and sedimenting bacteria-carrying particles (colony forming units, cfu) during rigidly standardized sham operations. Although minor differences were recorded inside the ultra-clean airflows, the three systems were comparable with regard to bacteriological efficiency and ensured a low air and surface contamination (0.05-4 cfu/m3 and 7-72 cfu/m2/h, depending on the site of sampling). We conclude that all three systems fulfilled well the criteria for ultra-clean air (< 10 cfu/m3), but that exponential airflow is the most versatile alternative, as additional side-walls around the operating area can be omitted.
我们将新型分区指数超净手术室通风系统（无需额外侧壁）与传统使用的具有垂直或水平层流气流但需要额外侧壁的超净空气系统进行了比较。在严格标准化的模拟手术过程中，对这三种装置进行了评估，重点是消除携带细菌的空气传播颗粒和沉降颗粒（菌落形成单位，cfu）。尽管在超净气流内部记录到了微小差异，但这三种系统在细菌学效率方面具有可比性，并确保了较低的空气和表面污染水平（取决于采样部位，分别为0.05 - 4 cfu/m³和7 - 72 cfu/m²/h）。我们得出结论，所有这三种系统都很好地满足了超净空气（< 10 cfu/m³）的标准，但指数气流是最通用的选择，因为可以省略手术区域周围的额外侧壁。
