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Prevention and diagnosis of invasive fungal disease in high-risk patients within an integrative care pathway

Barnes, Rosemary Ann, Stocking, Kate, Bowden, Sarah, Poynton, Matthew H. and White, P. Lewis 2013. Prevention and diagnosis of invasive fungal disease in high-risk patients within an integrative care pathway. Journal of Infection 67 (3) , pp. 206-214. 10.1016/j.jinf.2013.04.020

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Objectives The aim of this study was to assess the clinical utility of enhanced diagnostics on the management of invasive fungal disease in high risk patients within an integrated care pathway and to audit compliance and efficacy of antifungal prophylaxis. Methods A cohort of 549 high risk haematology and stem-cell transplant recipients was followed over a 5 year period. The routine standard of care involved the use of antimould prophylaxis and a neutropenic care pathway utilizing twice weekly antigen and PCR testing. Results Prophylaxis with itraconazole was poorly tolerated and therapeutic levels could not be maintained. Antigen testing and PCR showed good clinical utility in the management of invasive aspergilosis with high sensitivity (98%) and negative predictive value (99.6%) when both tests were used together, allowing a diagnosis IA to be excluded and obviating the need for empirical antifungal agents. When used serially, multiple positive PCR and antigen test results enabled accurate diagnosis of IA with a specificity of 95% and a positive likelihood ratio of 11. Biomarkers preceded clinical signs in 85% of proven and probable invasive disease. Conclusion The combination of both tests showed optimum clinical utility for the diagnosis and management of IA in this high risk group.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: Invasive fungal disease; Diagnosis; Antigen detection; PCR
Publisher: Elsevier
ISSN: 0163-4453
Last Modified: 04 Jun 2017 08:17

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