Factors associated with survival to hospital discharge following endoscopic treatment for synovial sepsis in 214 horses.

Authors: Milner P I, Bardell D A, Warner L, Packer M J, Senior J M, Singer E R, Archer D C

Journal: Equine veterinary journal

DOI: 10.1111/evj.12212 PubMed: 24417437Log in to save

Summary

# Editorial Summary: Survival Factors in Equine Synovial Sepsis Treatment Synovial sepsis carries serious consequences for horses, yet outcomes following endoscopic treatment vary considerably. Milner and colleagues analysed 214 cases treated at a single referral hospital over seven years, using multivariable logistic regression to identify which pre-, intra- and post-operative factors predicted survival to discharge. Several clinically relevant findings emerged: elevated preoperative synovial fluid total protein (TP) above 55–60 g/l, moderate to severe synovial inflammation at surgery, and anaesthetic induction outside normal working hours were associated with poorer survival, whereas the presence of an admission wound paradoxically improved prognosis. Post-operatively, TP measurements above 50–55 g/l and requirement for multiple endoscopic procedures both indicated reduced survival likelihood. For practitioners, these findings provide evidence-based reference points for prognostic counselling—particularly the TP thresholds, which can be assessed rapidly and help inform owners about realistic expectations during the critical early stages of hospitalisation and recovery.

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Practical Takeaways

•Higher synovial fluid protein levels at presentation are a negative prognostic indicator; consider them when counseling owners on survival chances
•Timing of surgical intervention matters—cases requiring out-of-hours anaesthesia had worse outcomes, suggesting early referral during business hours may improve prognosis
•Horses requiring repeat endoscopic surgeries have significantly reduced survival rates; initial surgical management should be as thorough as possible

Key Findings

•Preoperative synovial fluid total protein >55-60 g/l was associated with reduced survival to discharge
•Anaesthetic induction outside normal working hours reduced survival odds by 64% (OR 0.36)
•Moderate/severe synovial inflammation at surgery reduced survival odds by 72% (OR 0.28)
•Need for more than one endoscopic surgery was associated with 81% reduction in survival odds (OR 0.19)

Conditions Studied

synovial sepsisseptic arthritisseptic tenosynovitis

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