Antibiotic Use and Aortic Aneurysm Management

Introduction to Antibiotic Use in Ear Infections

Ofloxacin eardrops are a recommended first-line therapy for otitis media with tympanostomy tubes, with minimal systemic absorption and no increased risk of aortic rupture when used as directed, according to the American Academy of Otolaryngology-Head and Neck Surgery 1
Topical fluoroquinolone eardrops like ofloxacin provide bactericidal activity against common ear pathogens, as stated by the American Academy of Otolaryngology-Head and Neck Surgery 1

Systemic fluoroquinolones have been associated with an increased risk of aortic aneurysm and dissection, as reported by the Clinical Microbiology and Infection journal 2
The FDA and EMA have issued warnings about potential aortic ruptures or tears associated with systemic fluoroquinolones, according to the Clinical Microbiology and Infection journal 2
The Kidney International journal notes that the use of fluoroquinolones has been associated with an increased risk for tendinopathies and aortic aneurysms and dissections 3

The 2021 MMWR Recommendations state that doxycycline should be considered preferentially over fluoroquinolones due to the risks associated with fluoroquinolone use, as recommended by the MMWR 4
The 2024 KDIGO guidelines note that the use of fluoroquinolones has been associated with an increased risk for tendinopathies and aortic aneurysms and dissections, as stated by the Kidney International journal 3
The 2024 Mayo Clinic Proceedings guidelines explicitly state that fluoroquinolones are generally avoided given the increased risk of aortic aneurysm, according to the Mayo Clinic Proceedings journal 5
Fluoroquinolones should generally be avoided in patients with aortic aneurysms unless absolutely necessary, as recommended by the European Heart Journal 6, 7

Initial comprehensive assessment with CTA or MRA is necessary to fully characterize the lesion, as suggested by the European Heart Journal 6
Duplex ultrasound (DUS) is the first-line imaging modality for abdominal aortic aneurysm (AAA) detection and surveillance, with recommended surveillance intervals of every 4 years for AAA <3.0 cm, every 3 years for AAA 3.0-3.9 cm, and annually for AAA 4.0-4.9 cm in men and women, as recommended by the American College of Cardiology 6, 8
CT or MRI is recommended for thoracic aortic aneurysm (TAA) detection and when DUS is inadequate, as suggested by the European Heart Journal 6
Leading-edge to leading-edge AP diameter measurement is the preferred method for surveillance, as recommended by the Annals of Emergency Medicine 9

Intervention is indicated if the lesion becomes symptomatic, shows signs of rapid growth or expansion, develops complications, or reaches size threshold, as recommended by the European Heart Journal 6, 10
Endovascular repair is the first-line treatment for complicated PAU in the abdominal aorta, as recommended by the European Heart Journal 6, 10
Open surgical repair may be considered when endovascular repair is not feasible, as suggested by the European Heart Journal 6
The American College of Cardiology recommends surgical or endovascular repair for infrarenal or juxtarenal AAA ≥5.5 cm in men and ≥5.0 cm in women, as recommended by the American College of Cardiology 6, 8, 11

After open repair of TAA, CT is recommended within 1 month, then yearly for 2 years, then every 5 years if stable, as recommended by the European Heart Journal 6
After endovascular repair, imaging is recommended at 1 month and 12 months, then annually, with monitoring for endoleaks, aneurysm sac changes, and device integrity, as recommended by the European Heart Journal 6, 11