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Validation of two algorithms for managing children with a non-blanching rash

Lookup NU author(s): Dr Laura Jones


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Background Paediatricians are concerned that children who present with a non-blanching rash (NBR) may have meningococcal disease (MCD). Two algorithms have been devised to help identify which children with an NBR have MCD.Aim To evaluate the NBR algorithms' ability to identify children with MCD.Methods The Newcastle-Birmingham-Liverpool (NBL) algorithm was applied retrospectively to three cohorts of children who had presented with NBRs. This algorithm was also piloted in four hospitals, and then used prospectively for 12 months in one hospital. The National Institute for Health and Care Excellence (NICE) algorithm was validated retrospectively using data from all cohorts.Results The cohorts included 625 children, 145 (23%) of whom had confirmed or probable MCD. Paediatricians empirically treated 324 (52%) children with antibiotics. The NBL algorithm identified all children with MCD and suggested treatment for a further 86 children (sensitivity 100%, specificity 82%). One child with MCD did not receive immediate antibiotic treatment, despite this being suggested by the algorithm. The NICE algorithm suggested 382 children (61%) who should be treated with antibiotics. This included 141 of the 145 children with MCD (sensitivity 97%, specificity 50%).Conclusions These algorithms may help paediatricians identify children with MCD who present with NBRs. The NBL algorithm may be more specific than the NICE algorithm as it includes fewer features suggesting MCD. The only significant delay in treatment of MCD occurred when the algorithms were not followed.

Publication metadata

Author(s): Riordan FAI, Jones L, Clark J, Non-Blanching Rash Audit Grp

Publication type: Article

Publication status: Published

Journal: Archives of Disease in Childhood

Year: 2016

Volume: 101

Issue: 8

Pages: 709-713

Print publication date: 01/08/2016

Online publication date: 16/03/2016

Acceptance date: 16/02/2016

ISSN (print): 0003-9888

ISSN (electronic): 1468-2044

Publisher: BMJ Group


DOI: 10.1136/archdischild-2015-309451


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