Salisbury D M, Hutfilz P, Treen L M, Bollin G E, Gautam S
Infection Control Department, Akron General Medical Center, OH 44307, USA.
Am J Infect Control. 1997 Feb;25(1):24-7. doi: 10.1016/s0196-6553(97)90049-3.
The hands of health care workers (HCWs) serve as a major route for transmission of nosocomial infection. Although handwashing is known to reduce cross-transmission of infection, the influence of rings on the efficacy of handwashing and the carriage of bacteria on the hands has not been well established.
In this study, 50 HCWs with rings were paired by unit with 50 HCWs without rings. Cultures were obtained by use of a timed-friction rinse before and after a timed handwashing. Standard laboratory procedures were followed for identification of the bacteria.
When colony counts before handwashing are taken into consideration, a significant difference is seen after handwashing between the two groups (R2 = 0.56). The regression model showed that the slope was significantly steeper (p < 0.0014) for the group with rings. This effect is more apparent when the colony count on hands is greater than 1000 colony forming units before handwashing.
A standardized, timed handwashing procedure was effective in decreasing the bioload of HCWs' hands. The effect of rings on the bioload was significant in this study.
医护人员的手是医院感染传播的主要途径。虽然洗手已知可减少感染的交叉传播，但戒指对洗手效果及手上细菌携带情况的影响尚未明确。
在本研究中，50名戴戒指的医护人员与50名不戴戒指的医护人员按科室配对。在定时洗手前后，通过定时摩擦冲洗获取培养样本。采用标准实验室程序鉴定细菌。
考虑洗手前的菌落计数时，两组洗手后的差异显著（R2 = 0.56）。回归模型显示，戴戒指组的斜率明显更陡（p < 0.0014）。当洗手前手上菌落计数大于1000菌落形成单位时，这种影响更明显。
标准化的定时洗手程序可有效降低医护人员手上的生物负荷。本研究中戒指对生物负荷的影响显著。
