Reviews and feature article
Information technology–based approaches to reducing repeat drug exposure in patients with known drug allergies

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There is increasing interest internationally in ways of reducing the high disease burden resulting from errors in medicine management. Repeat exposure to drugs to which patients have a known allergy has been a repeatedly identified error, often with disastrous consequences. Drug allergies are immunologically mediated reactions that are characterized by specificity and recurrence on reexposure. These repeat reactions should therefore be preventable. We argue that there is insufficient attention being paid to studying and implementing system-based approaches to reducing the risk of such accidental reexposure. Drawing on recent and ongoing research, we discuss a number of information technology–based interventions that can be used to reduce the risk of recurrent exposure. Proven to be effective in this respect are interventions that provide real-time clinical decision support; also promising are interventions aiming to enhance patient recognition, such as bar coding, radiofrequency identification, and biometric technologies.

Section snippets

Epidemiology

Obtaining epidemiologic data on the frequency of reexposure to drugs in those with known drug allergies is difficult for a number of reasons. First, there is a problem with underreporting in schemes that collect information on ADRs, such as the Yellow Card system run by the United Kingdom (UK) Medicines and Healthcare products Regulatory Agency,5 the US Food and Drug Administration's MedWatch Program (http://www.fda.gov/medwatch/index.html), or the recently established National Reporting and

Information technology–based approaches to reducing medication errors

Information technology (IT)–based solutions are particularly promising in reducing the risk of reexposure because they can help in overcoming some of the underlying systemic failings, particularly in relation to managing, processing, retaining, and making accessible large amounts of disparate data to multiple end users.

Below we consider theoretic and, where available, empiric evidence of a number of key IT-based approaches currently under investigation, with the aim of reducing the risk of

Conclusions

There is an increasing body of epidemiologic work indicating that ADRs caused by known drug allergies are relatively common and potentially preventable. Alongside the need for increased research into investigating the underlying mechanisms and processes involved in allergic reactions to drugs and the accompanying need to develop improved screening and diagnostic tests,4 there is, we believe, the pressing need to investigate and, where found to be effective, implement systems-based approaches to

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    Disclosure of potential conflict of interest: The authors have declared that they have no conflict of interest.

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