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首页> 外文期刊>Journal of Clinical Microbiology >Validation of catheter semiquantitative culture technique for nonstaphylococcal organisms.
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Validation of catheter semiquantitative culture technique for nonstaphylococcal organisms.

机译：非葡萄球菌生物体导管半定量培养技术的验证。

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The catheter semiquantitative culture roll tip technique has been validated as a discriminator between non-catheter-related bacteremias and catheter-related bacteremias (CRBs) caused by Staphylococcus species. However, this technique has not been specifically validated when used for the evaluation of catheters infected with organisms other than staphylococci. We reviewed catheters that had been submitted for semiquantitative roll tip culture as well as hospital records to determine clinical correlates of infection. Local infection and CRB were defined by standard criteria. Catheter-related sepsis (CRS) was defined as fever, leukocytosis, or hypotension which resolved with catheter removal, without another source of infection. For 195 catheters from 93 patients, gram-negative rods and enterococci were present on 36, fungi were on 25, Corynebacterium species were on 5, Bacillus species were on 3, Staphylococcus species were on 79, and 41 demonstrated no growth. Of 21 episodes of CRB or CRS due to nonstaphylococcal organisms, only 1 (questionable) episode was due to a catheter with < 15 CFU (P < 0.05). Eleven of these 21 episodes of CRB or CRS were due to gram-negative rods and enterococci, of which only the questionable episode was due to a catheter with < 15 CFU. Nine of these 21 episodes of CRB or CRS were due to fungi, none of which were associated with a catheter with < 15 CFU. The data for Staphylococcus species recapitulated published data (none of 21 CRB or CRS episodes were associated with catheters with < 15 CFU) and validated this retrospective technique. The data presented in this study validate the use of the semiquantitative culture technique for the evaluation of catheter-related infections caused by organisms other than staphylococci.
机译：导管半定量培养辊尖端技术已被证实可区分由葡萄球菌引起的非导管相关菌血症和导管相关菌血症（CRB）。但是，当该技术用于评估感染了葡萄球菌以外的生物的导管时，尚未经过专门验证。我们审查了已提交用于半定量辊尖端培养的导管以及医院记录，以确定感染的临床相关性。通过标准标准定义局部感染和CRB。导管相关性脓毒症（CRS）定义为发烧，白细胞增多或低血压，可通过移除导管而解决，而没有其他感染源。对于来自93位患者的195个导管，革兰阴性棒和肠球菌存在36个，真菌在25个，棒状杆菌在5个，芽孢杆菌在3个，葡萄球菌在79个，没有生长的41个。在21例非葡萄球菌引起的CRB或CRS发作中，只有1例（可疑）是由于导管的<15 CFU而引起的（可疑）（P <0.05）。在这21例CRB或CRS发作中，有11例是由于革兰氏阴性杆菌和肠球菌引起的，其中只有可疑的发作是由<15 CFU的导管引起的。在这21例CRB或CRS发作中，有9例是由于真菌引起的，均与<15 CFU的导管无关。葡萄球菌种类的数据概括了已发表的数据（21例CRB或CRS发作均与＜15 CFU的导管相关），并验证了这种回顾性技术。这项研究中提供的数据验证了使用半定量培养技术评估由葡萄球菌以外的生物引起的导管相关感染。

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