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BacT/Alert 3D系统2种细菌培养瓶的临床应用对比评价 被引量:2

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摘要 目的评价Bact/Alert 3D全自动血培养仪配套标准需氧(SA)瓶和中和抗生素需氧(FA)瓶临床应用情况。方法采用Bact/Alert 3D全自动血培养系统配套标准需氧瓶和中和抗生素需氧瓶平行监测。在SA和FA培养瓶中同时加入一定量抗生素和菌液比较2种培养瓶对抗生素的吸附能力;标本培养周期为5d,不论系统显示阳性或阴性,均进行涂片检查和转种血琼脂、巧克力琼脂平板培养,观察2种瓶检出细菌时间、阳性率、敏感性、特异性、准确性、假阳性率,假阴性率等。结果96例平行接种标准需氧瓶和中和抗生素需氧瓶标本中,2种瓶最快阳性检出时间均为1.5h;SA培养瓶检出20例阳性,阳性率为20.8%,敏感性为95.0%,特异性为98.7%,准确度为97.9%,假阳性率为5.0%,假阴性率为1.3%;接种FA培养瓶检出26例阳性,阳性率为27.1%。敏感性为96.0%,特异性为97.2%,准确度为96.9%,假阳性率为7.7%,假阴性率为1.4%。标准菌株在含4倍最低抑菌浓度抗生素的FA瓶中仍能生长,但在含同样抗生素的标准瓶中不生长。结论在Bact/Alert 3D仪各项技术指标及实验室环境符合要求的条件下,标准需氧瓶和中和抗生素需氧瓶均为较好的配套培养瓶;接受抗生素治疗的患者,使用中和抗生素需氧(FA)瓶比标准需氧(SA)瓶阳性检出率更高。
出处 《国际检验医学杂志》 CAS 2008年第9期858-859,共2页 International Journal of Laboratory Medicine
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