Use of PCR Cycle Threshold and Clinical Interventions to Aid in the Management of Pediatric Clostridioides difficile Patients

被引:0
|
作者
Suleiman, Mohammed [1 ]
Tang, Patrick [1 ,2 ]
Imam, Omar [3 ]
Morales, Princess [1 ]
Altrmanini, Diyna [1 ]
Barr, Kelli L. [4 ]
Roberts, Jill C. [4 ]
Perez-Lopez, Andres [1 ,2 ]
机构
[1] Sidra Med, Dept Pathol, POB 26999, Doha, Qatar
[2] Weill Cornell Med Qatar, Dept Pathol & Lab Med, POB 24144, Doha, Qatar
[3] Sidra Med, Dept Infect Prevent & Control, POB 26999, Doha, Qatar
[4] Univ S Florida, Ctr Global Hlth & Infect Dis Res, Tampa, FL 33612 USA
关键词
Clostridioides difficile; pediatric; children; cycle threshold; intervention; INFECTION; IMPACT; EPIDEMIOLOGY; DIAGNOSIS; PREDICTS; CHILDREN;
D O I
10.3390/microorganisms12061181
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Better diagnostic tools are needed to improve the diagnosis of Clostridioides difficile infections (CDI) and reduce the overtreatment of colonized children. In this study, we evaluated two polymerase chain reaction (PCR) assays (Cepheid GeneXpert C. difficile and the Gastroenteritis PCR Panel by QIAstat-Dx) as a standalone method in combination with the PCR cycle threshold (Ct) value in positive samples to predict the presence of free toxins. We also evaluated the clinical impact of reporting toxin production results and provided comments alongside the PCR results in our pediatric population. PCR-positive stool samples from pediatric patients (aged 2 to 18 years old) were included in our study and tested for the presence of toxins A and B using the C. difficile Quik Chek Complete kit. For the clinical intervention, the CDI treatment rates 6 months pre- and post-intervention were compared. The use of PCR Ct value showed excellent sensitivity (100%) at a Ct value cutoff of 26.1 and 27.2 using the Cepheid GeneXpert C. difficile and the Gastroenteritis PCR Panel by QIAstat-Dx, respectively, while the toxin test showed inferior sensitivity of 64% in the PCR-positive samples. In addition, CDI treatment rates were decreased by 23% post-intervention. The results of our study suggest that nucleic acid amplification test (NAAT) assays supplemented by the use of PCR Ct value for positive samples can be used as standalone tests to differentiate CDI from colonization. Furthermore, the reporting of toxin production along with the PCR results can help reduce the unnecessary treatment of colonized children.
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页数:8
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