Nolan C M, Hashisaki P A, Dundas D F
Seattle-King County Department of Public Health, Seattle, WA 98104.
J Infect Dis. 1991 May;163(5):1150-3. doi: 10.1093/infdis/163.5.1150.
An outbreak of infections due to Mycobacterium fortuitum associated with electromyography (EMG) is described. During a 6-week period, six patients who received EMG at one facility developed soft-tissue infections manifested by slowly expanding suppurative nodules at sites of needle electrode insertion. M. fortuitum was isolated from five patients; four isolates that were evaluated further were M. fortuitum biovariant fortuitum. EMG procedures were done in one laboratory by one physician and assistant. Standard procedures included use of reusable needle electrodes disinfected with 2% glutaraldehyde and then rinsed with tap water. On recognition of the outbreak, the procedure was changed to include autoclaving of needle electrodes. Active surveillance for 1 year revealed no further cases. M. fortuitum could not be isolated from the laboratory, EMG equipment and reagents, or skin of the medical personnel. The outbreak demonstrates that nontuberculous mycobacterial infection may be associated with EMG.
本文描述了一起与肌电图检查（EMG）相关的偶然分枝杆菌感染暴发事件。在6周的时间里，在同一机构接受肌电图检查的6名患者出现了软组织感染，表现为针电极插入部位缓慢扩大的化脓性结节。从5名患者中分离出偶然分枝杆菌；进一步评估的4株分离菌为偶然分枝杆菌生物变种偶然分枝杆菌。肌电图检查由一名医生和一名助手在一个实验室进行。标准程序包括使用经2%戊二醛消毒后用自来水冲洗的可重复使用针电极。在确认暴发后，程序改为包括对针电极进行高压灭菌。为期1年的主动监测未发现更多病例。在实验室、肌电图设备和试剂或医务人员的皮肤上均未分离到偶然分枝杆菌。此次暴发表明非结核分枝杆菌感染可能与肌电图检查有关。
