Risk factors for epistaxis in jump racing in Great Britain (2001-2009).
Authors: Reardon Richard J M, Boden Lisa A, Mellor Dominic J, Love Sandy, Newton Richard J, Stirk Anthony J, Parkin Timothy D
Journal: Veterinary journal (London, England : 1997)
Summary
# Editorial Summary: Risk Factors for Epistaxis in Jump Racing Between 2001 and 2009, researchers analysed over 170,000 race starts across British hurdle and steeplechase racing to identify what predisposes horses to exercise-induced epistaxis. Using logistic regression modelling on 603 hurdle and 550 steeplechase cases where horses bled at the racecourse, they identified several consistent risk factors: racing on firm ground, previous epistaxis history, and horses with >75% of their career spent in flat racing (suggesting poor vascular adaptation to jumping demands). Additional hurdle-specific risks included spring racing and increased age at first race, whilst steeplechase runners faced elevated risk when competing in claiming races or after high racing frequency in the preceding 3–6 months. The clustering of cases within individual trainers, jockeys and courses suggests environmental or management factors warrant further investigation alongside the identified physiological and competitive variables. These findings offer practitioners and racing administrators concrete data for risk stratification—allowing targeted monitoring of high-risk competitors and informing decisions about ground conditions, racing frequency, and transition protocols for flat-to-jump conversions.
Read the full abstract on PubMed
Practical Takeaways
- •Monitor horses transitioning from flat to jump racing (especially those with >75% flat racing history) as they face elevated epistaxis risk; consider additional pre-race examinations for these individuals
- •Track and manage horses with prior epistaxis episodes carefully, as recurrence risk is significantly elevated; implement enhanced respiratory monitoring protocols
- •Be aware that firmer ground conditions increase epistaxis risk across all jump racing types; this information can inform race scheduling and track maintenance decisions
Key Findings
- •Firmer ground conditions increased epistaxis risk in both hurdle and steeplechase racing
- •Horses with >75% of career starts in flat racing had significantly increased epistaxis risk in jump racing
- •Previous epistaxis episode was a strong risk factor for recurrence in both jump racing types
- •Spring racing season and increased age at first race were specific risk factors for hurdle racing epistaxis