Brook I
Department of Pediatrics, Georgetown University School of Medicine, Washington, DC, USA.
Ann Otol Rhinol Laryngol. 1997 Sep;106(9):751-2. doi: 10.1177/000348949710600907.
External otitis caused by Staphylococcus aureus was observed in a nurse after extensive use of a stethoscope. The infection recurred and a similar organism was isolated from the stethoscope's earpiece. The infection did not recur after the earpiece was cleansed after each use. In a prospective study, the bacterial flora of 35 earpieces was evaluated. Fifty-three isolates, 36 aerobic or facultative and 17 anaerobic, were recovered. The number of organisms per earpiece ranged from 14 to 204 (average 92 +/- 17). The predominant isolates were Staphylococcus epidermidis (16 isolates), Propionibacterium acnes (12), and Saureus (7). The study demonstrates the colonization of the stethoscope's earpiece with microorganisms that possess the potential for causing nosocomial infection.
一名护士在大量使用听诊器后出现了由金黄色葡萄球菌引起的外耳道炎。感染复发，且从听诊器耳塞中分离出了类似的病原体。每次使用后对耳塞进行清洁后，感染未再复发。在一项前瞻性研究中，对35个耳塞的细菌菌群进行了评估。共分离出53株菌株，其中36株为需氧菌或兼性厌氧菌，17株为厌氧菌。每个耳塞的菌数范围为14至204个（平均92±17个）。主要的分离菌株为表皮葡萄球菌（16株）、痤疮丙酸杆菌（12株）和金黄色葡萄球菌（7株）。该研究表明，听诊器耳塞被具有引起医院感染可能性的微生物所定植。
