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Fluoroquinolones and the risk of aortic aneurysm or dissection: A population-based propensity score-matched German cohort study

Wicherski J, Peltner J, Becker C, Schüssel K, Brückner G, Schlotmann A, Schröder H, Kern WV et al.

Pharmacotherapy, 2025

Abstract

OBJECTIVE: To investigate the risk of aortic aneurysm or dissection associated with fluoroquinolone (FQ) prescription compared to macrolides in German routine health care data in order to replicate the recent study (Pharmacotherapy 2023;43:883) extending the results by contributing evidence for six additional broad-spectrum antibiotic classes as active comparators.

DESIGN: Cohort study in active comparator new user design comparing FQ with macrolides, tetracyclines, penicillins with extended spectrum, penicillins and beta-lactamase inhibitor combinations, second- and third-generation cephalosporins, sulfonamide and trimethoprim combinations, and lincosamides.

SETTING: German statutory health insurance, the "Allgemeine Ortskrankenkasse" (AOK), January 2013 to December 2019.

PARTICIPANTS: Adults with at least one new prescription fill for FQ or active comparator antibiotics. New users were defined as individuals without antibiotic prescription fills, aortic aneurysm or dissection diagnoses, and hospitalization within 365 days prior to the cohort entry date. Users of FQ and active comparators were matched by nearest neighbor 1:1 propensity score matching.

MAIN OUTCOME MEASURES: Incident inpatient aortic aneurysm or dissection was observed within a 60-day risk window. In sensitivity analyses, an extended risk window of 90 days was applied, and specific FQ agents, dosages, and diagnoses were stratified.

RESULTS: FQ episodes were associated with an increased risk for aortic…

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Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence.

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