Berger S A, Kramer M, Nagar H, Finkelstein A, Frimmerman A, Miller H I
Department of Microbiology, Tel-Aviv Sourasky Medical Center, Israel.
J Hosp Infect. 1993 Jan;23(1):51-4. doi: 10.1016/0195-6701(93)90130-r.
The influence of surgical mask usage on bacterial contamination of the operative field was studied during 30 cardiac catheterization procedures. Mask position was varied during each procedure according to a predesigned random table. The number of bacterial colonies recoverable when no mask was worn was significantly higher than that detected when a full mask was worn (P < 0.002). Shedding of Staphylococcus epidermidis was greater when no mask was worn (mean 5.2 colonies 10 min-1) than shedding with full mask (mean 2.7 colonies 10 min-1; P < 0.004). Although mask placement below the nose was associated with higher mean colony counts than that above the nose, these differences were not statistically significant.
在30例心导管插入术过程中，研究了使用手术口罩对手术区域细菌污染的影响。在每个手术过程中，根据预先设计的随机表改变口罩位置。未戴口罩时可回收的细菌菌落数显著高于佩戴全口罩时检测到的菌落数（P<0.002）。未戴口罩时表皮葡萄球菌的脱落量（平均5.2个菌落/10分钟）大于佩戴全口罩时的脱落量（平均2.7个菌落/10分钟；P<0.004）。尽管口罩置于鼻子下方时的平均菌落数高于置于鼻子上方时，但这些差异无统计学意义。
