Hunt L M, Yagiela J A
Oral Surg Oral Med Oral Pathol. 1977 Sep;44(3):367-73. doi: 10.1016/0030-4220(77)90406-6.
Microbial contamination of sterile nasal hoods was demonstrated in nine of twenty-one clinical administrations of nitrous oxide-oxygen conscious sedation. In each case, bacteria isolated from the hood after 30 minutes' use were correlated morphologically with organisms recovered from the subject's nasal mucosa. A laboratory investigation utilizing an artificial respiration-sedation system revealed that there is a significant possibility of cross-infection between patients when improperly disinfected sedation equipment is employed.
在21次氧化亚氮-氧气清醒镇静的临床应用中，有9次出现了无菌鼻罩的微生物污染情况。在每一例中，使用30分钟后从鼻罩分离出的细菌在形态上与从受试者鼻粘膜中发现的微生物相关。一项利用人工呼吸-镇静系统的实验室调查显示，当使用消毒不当的镇静设备时，患者之间存在显著的交叉感染可能性。
