Equine blood cultures: Can we do better?

Area of Science:

• Veterinary Medicine
• Microbiology
• Infectious Diseases

Background:

• Blood culture is the gold standard for diagnosing bacterial sepsis.
• Inconsistent methodologies in equine blood culture lead to diagnostic challenges.
• Inaccurate results can result in inappropriate antimicrobial use and antimicrobial resistance.

Purpose of the Study:

• To review current indications and methodologies for equine blood culture.
• To identify factors impacting blood culture accuracy in horses and foals.
• To highlight areas for future research to optimize equine blood culture techniques.

Main Methods:

• Review of existing literature on equine blood culture.
• Analysis of variables affecting microbial yield and accuracy.
• Focus on neonatal foal sepsis cases.

Main Results:

• Blood culture methodology is not standardized in equine medicine.
• Sample collection variables (volume, aseptic technique, site, timing, frequency) significantly impact results.
• Patient-specific factors also influence blood culture accuracy.

Conclusions:

• Current equine blood culture practices may not accurately detect or identify bacteria causing sepsis.
• Standardization and optimization of blood culture techniques are necessary.
• Future research should focus on determining optimal blood volume, site, timing, and frequency for equine blood culture.