Rapid immunochromatographic detection of carbapenemases directly from positive blood cultures in patients colonized by carbapenemase-producing bacteria.

IF 3.7 3区 医学 Q2 INFECTIOUS DISEASES
Nicolas Lauwerier, Claire Duployez, Rémi Le Guern, Frédéric Wallet, Caroline Loïez
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引用次数: 0

Abstract

Objectives: Carbapenem resistance is increasing worldwide. Earlier detection of this resistance, combined with appropriate treatment, could improve the prognosis of bloodstream infection. This study aims to evaluate the detection of carbapenemase producing gram-negative bacteria directly from positive blood cultures to quickly adapt antibiotic therapy before the results of antibiotic susceptibility testing are available.

Method: A prospective single-center study was conducted over a five-month period at Lille University Hospital. Carbapenemase detection by immunochromatographic testing was performed directly from positive blood cultures with gram-negative rods of thirty-five patients previously colonized with carbapenemase-producing bacteria.

Results: Among these thirty-five positive blood cultures, 15 carbapenemase-producing strains were directly detected, mainly OXA-48 and NDM. This rapid procedure provided results in less than one hour, compared to several hours for conventional methods. Of the patients with infections caused by carbapenemase-producing isolates, 67% (10 patients) received inappropriate empiric treatment, highlighting the potential of the rapid test to adjust antibiotic therapy sooner.

Conclusions: Carbapenemase detection by immunochromatographic testing directly on blood culture pellets is reliable and can lead to early adaptation of antibiotic therapy in these severe infections.

直接从碳青霉烯酶产生菌定植患者的阳性血液培养物中快速免疫层析检测碳青霉烯酶。
目的:碳青霉烯类耐药性在全球范围内不断增加。及早发现这种耐药性并结合适当的治疗可改善血流感染的预后。本研究旨在评估直接从阳性血液培养物中检测产碳青霉烯酶革兰阴性菌的方法,以便在抗生素药敏试验结果出来之前快速调整抗生素治疗:里尔大学医院开展了一项为期五个月的前瞻性单中心研究。方法:里尔大学医院在五个月的时间内开展了一项前瞻性单中心研究,通过免疫层析检测法直接从 35 名先前定植有产碳青霉烯酶细菌的革兰氏阴性杆菌的阳性血液培养物中检测碳青霉烯酶:在这 35 份阳性血液培养物中,直接检测出 15 株产碳青霉烯酶菌株,主要是 OXA-48 和 NDM。与传统方法需要数小时相比,这种快速方法在不到一小时内就能得出结果。在由产碳青霉烯酶分离菌株引起感染的患者中,67%(10 名患者)接受了不恰当的经验性治疗,这凸显了快速检测在尽快调整抗生素治疗方面的潜力:结论:通过免疫层析检测直接在血培养颗粒上检测碳青霉烯酶是可靠的,可帮助这些严重感染患者及早调整抗生素治疗。
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来源期刊
Journal of global antimicrobial resistance
Journal of global antimicrobial resistance INFECTIOUS DISEASES-PHARMACOLOGY & PHARMACY
CiteScore
8.70
自引率
2.20%
发文量
285
审稿时长
34 weeks
期刊介绍: The Journal of Global Antimicrobial Resistance (JGAR) is a quarterly online journal run by an international Editorial Board that focuses on the global spread of antibiotic-resistant microbes. JGAR is a dedicated journal for all professionals working in research, health care, the environment and animal infection control, aiming to track the resistance threat worldwide and provides a single voice devoted to antimicrobial resistance (AMR). Featuring peer-reviewed and up to date research articles, reviews, short notes and hot topics JGAR covers the key topics related to antibacterial, antiviral, antifungal and antiparasitic resistance.
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