Fagernes Mette, Lingaas Egil, Bjark Per
Department of Internal Medicine, Vestfold Hospital, Tonsberg, Norway.
Infect Control Hosp Epidemiol. 2007 Oct;28(10):1191-5. doi: 10.1086/520739. Epub 2007 Aug 10.
To investigate the impact of a single plain finger ring on the number and types of bacteria on the hands of healthcare workers (HCWs).
Nonequivalent control groups, posttest only (preexperimental).
A total of 121 HCWs wearing 1 plain ring and 113 HCWs wearing no rings had both hands sampled by the "glove juice" technique. Quantitative culture of the samples was performed and microorganisms were identified.
Two Norwegian acute care hospitals.
A total of 234 HCWs who had physical contact with patients.
Total bacterial counts did not differ when hands with rings and hands without rings were compared, both according to nonpaired analysis (which compared the ring-bearing hands of ring-wearing HCWs to the hands of HCWs who did not wear rings [P=.661]) and according to paired analysis (which compared the ring-bearing and ring-free hands of ring-wearing HCWs [P=.071]). Staphylococcus aureus was recovered from 18.6% of the hands sampled, belonging to 26.9% of the HCWs, but neither paired nor nonpaired analysis showed any association with ring wearing. Gram-negative bacteria were recovered from 20.3% of the hands sampled, belonging to 28.6% of the HCWs. Ring-wearing HCWs were significantly more likely to be carriers of Enterobacteriaceae (P=.006), but paired comparison of the ring-bearing and ring-free hands of these HCWs did not show significant differences (P=.180). Carriage of nonfermentative gram-negative rods did not differ between the 2 groups, by either paired or nonpaired analysis.
Wearing a single plain finger ring did not increase the total bacterial load on the hands, nor was it associated with an increased rate of carriage of S. aureus or nonfermentative gram-negative rods. However, plain rings were associated with an increased rate of Enterobacteriaceae carriage.
探讨单枚普通指环对医护人员手部细菌数量及种类的影响。
非等效对照组，仅后测（实验前）。
采用“手套汁”技术对121名佩戴1枚普通指环的医护人员和113名未佩戴指环的医护人员的双手进行采样。对样本进行定量培养并鉴定微生物。
两家挪威急症护理医院。
共有234名与患者有身体接触的医护人员。
无论是根据非配对分析（将佩戴指环的医护人员戴指环的手与未佩戴指环的医护人员的手进行比较[P = 0.661]）还是配对分析（将佩戴指环的医护人员戴指环的手和未戴指环的手进行比较[P = 0.071]），比较戴指环的手和未戴指环的手时，总细菌计数均无差异。从18.6%的采样手中分离出金黄色葡萄球菌，占医护人员的26.9%，但配对分析和非配对分析均未显示与佩戴指环有任何关联。从20.3%的采样手中分离出革兰氏阴性菌，占医护人员的28.6%。佩戴指环的医护人员更有可能是肠杆菌科细菌的携带者（P = 0.006），但对这些医护人员戴指环的手和未戴指环的手进行配对比较时，未显示出显著差异（P = 0.180）。通过配对分析或非配对分析，两组之间非发酵革兰氏阴性杆菌的携带情况无差异。
佩戴单枚普通指环不会增加手部的总细菌负荷，也与金黄色葡萄球菌或非发酵革兰氏阴性杆菌携带率的增加无关。然而，普通指环与肠杆菌科细菌携带率的增加有关。
