Propionibacterium acnes wound contamination at the time of spinal surgery

被引:68
作者
McLorinan, GC
Glenn, JV
McMullan, MG
Patrick, S
机构
[1] Queens Univ Belfast, Sch Med, Dept Microbiol, Belfast BT12 6BN, Antrim, North Ireland
[2] Royal Victoria Hosp, Fractures Dept, Belfast, Antrim, North Ireland
关键词
D O I
10.1097/01.blo.0000175716.76247.81
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Bacteria of the normal skin microbiota such as Propionibacterium acnes and coagulase-negative staphylococci often are dismissed as contaminants when detected in clinical samples. Propionibacterium acnes is described as a cause of spinal infection and more recently has been linked to sciatica. To date no researchers formally have examined the incidence of bacterial wound contamination during spinal surgery. Surgical specimens were removed from 79 patients having spinal surgery for analysis using agar culture detection, broth enrichment, and immunofluorescence microscopy. Bacteria were identified in 29.1% of skin samples, 21.5% of tissue samples and 16.5% of washings retrieved from operative wounds. Propionibacterium acnes was identified more frequently than Staphylococcus spp in each of the three sample types. Bacteria were detected using enrichment in 9 (11%) patients and using fluorescence microscopy in 15 (19%). The results of immunofluorescence microscopy suggest that Propionibacterimn acnes detected in wounds originates from patient skin. Bacteria from contaminated wounds appeared as single cells using fluorescence microscopy; however previous work shows that bacteria from infected hip prosthesis are observed as large aggregates. Therefore, it is suggested that immunonuorescence microscopy is a useful tool to help discriminate between surgical contamination and infection.
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页码:67 / 73
页数:7
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