Impact of the US Food and Drug Administration warning regarding increased risk of aortic aneurysms or aortic dissections on fluoroquinolone prescribing trends

Author:

Rizk John GORCID,Slejko Julia F,Heil Emily L,Seo Dominique,Qato Danya MORCID

Abstract

BackgroundThe US Food and Drug Administration (FDA) issued a warning in December 2018 regarding an increased risk of aortic aneurysms and aortic dissections associated with fluoroquinolone (FQ) use. This warning specifically targeted older adults and patients with conditions such as hypertension, Marfan syndrome, Ehlers-Danlos syndrome, atherosclerosis, peripheral vascular disease and history of aneurysms.ObjectiveTo evaluate the impact of the safety warning on prescribing trends of FQs in the targeted population.MethodsThis cross-sectional study with an interrupted time series (ITS) analysis (January 2018–December 2019) used a 25% random sample of IQVIA PharMetrics®Plus for Academics health plan claims database. The impact of the warning on FQ utilisation was quantified among the targeted population and a non-targeted population.ResultsFrom 2018 to 2019, both study populations saw a decrease in the year-over-year percent change of FQ prescriptions per 100 000 beneficiaries (−11%, from 14 227 to 12 662, targeted; −15%, from 5227 to 4446, non-targeted) and proportion of FQ use versus other antibiotics (from 15.6% to 13.8%, targeted; from 9.4% to 8%, non-targeted). In the targeted population, the ITS analysis did not show a significant trend change, a change in level or postwarning trend in the monthly rate of FQ prescriptions per 1000 beneficiaries. A positive trend change was observed in the non-targeted population (0.07, <0.01–0.13), but there were no significant changes in level or post-warning trend.ConclusionWe did not find a change in FQ prescription rates after the warning. The utility of safety advisories as a primary tool for mitigating FQ use in high-risk populations should be revisited.

Publisher

BMJ

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