Abstract
Background and Objective
While risk of acute kidney injury (AKI) is a well documented adverse effect of some drugs, few studies have assessed the relationship between drug–drug interactions (DDIs) and AKI. Our objective was to develop an algorithm capable of detecting potential signals on this relationship by retrospectively mining data from electronic health records.
Material and methods
Data were extracted from the clinical data warehouse (CDW) of the Hôpital Européen Georges Pompidou (HEGP). AKI was defined as the first level of the RIFLE criteria, that is, an increase ≥50 % of creatinine basis. Algorithm accuracy was tested on 20 single drugs, 10 nephrotoxic and 10 non-nephrotoxic. We then tested 45 pairs of non-nephrotoxic drugs, among the most prescribed at our hospital and representing distinct pharmacological classes for DDIs.
Results
Sensitivity and specificity were 50 % [95 % confidence interval (CI) 23.66–76.34] and 90 % (95 % CI 59.58–98.21), respectively, for single drugs. Our algorithm confirmed a previously identified signal concerning clarithromycin and calcium-channel blockers (unadjusted odds ratio (ORu) 2.92; 95 % CI 1.11–7.69, p = 0.04). Among the 45 drug pairs investigated, we identified a signal concerning 55 patients in association with bromazepam and hydroxyzine (ORu 1.66; 95 % CI 1.23–2.23). This signal was not confirmed after a chart review. Even so, AKI and co-prescription were confirmed for 96 % (95 % CI 88–99) and 88 % (95 % CI 76–94) of these patients, respectively.
Conclusion
Data mining techniques on CDW can foster the detection of adverse drug reactions when drugs are used alone or in combination.
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Acknowledgments
Cendrine Baudoin, Eric Zapletal, Antoine Rachas, Abdel-Ali Boussadi, Bastien Rance, Anne-Sophie Jannot, Jean Bouyer, Gilles Chatellier.
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No sources of funding were used to assist in the preparation of this study.
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Yannick Girardeau, Claire Trivin, Pierre Durieux, Christine Le Beller, Lillo-Le Louet Agnes, Antoine Neuraz, Patrice Degoulet and Paul Avillach have no conflicts of interest that are directly relevant to the contents of this study.
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All persons gave their informed consent prior to their inclusion in the study. We obtained an approval from the institutional review board of our hospital (IRB#00001072 Study #CDW_2013_0004).
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Girardeau, Y., Trivin, C., Durieux, P. et al. Detection of Drug–Drug Interactions Inducing Acute Kidney Injury by Electronic Health Records Mining. Drug Saf 38, 799–809 (2015). https://doi.org/10.1007/s40264-015-0311-y
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DOI: https://doi.org/10.1007/s40264-015-0311-y