Fluoroquinolones in the elderly: safety considerations

Area of Science:

• Pharmacology
• Geriatric Medicine
• Infectious Diseases

Background:

• Fluoroquinolones are broad-spectrum antibiotics widely used for bacterial infections.
• Adverse effects in the elderly are not reported with increased frequency, but comparative tolerability data are limited.
• Age-related decline in renal function necessitates dosage adjustments for renally eliminated fluoroquinolones.

Purpose of the Study:

• To review the safety and tolerability of commonly used fluoroquinolones.
• To highlight specific considerations for fluoroquinolone use in the elderly population.
• To discuss potential adverse effects and risk factors associated with fluoroquinolone therapy.

Main Methods:

• Literature review of fluoroquinolone adverse effects.
• Analysis of age-related changes in drug metabolism and excretion.
• Identification of risk factors for specific fluoroquinolone toxicities.

Main Results:

• Gastrointestinal and hypersensitivity reactions are less common with fluoroquinolones compared to other antibacterials.
• Central nervous system adverse effects are a concern in the elderly and may be misattributed to age.
• Fluoroquinolones can prolong the QT interval and increase the risk of tendinitis and tendon rupture, particularly in older adults with comorbidities.

Conclusions:

• Fluoroquinolones are generally well-tolerated but require careful consideration of individual patient profiles.
• Dosage adjustments based on renal function, rather than age alone, are recommended.
• Close monitoring for CNS effects and tendon disorders is crucial in elderly patients receiving fluoroquinolones.