Risk factors for development of acute laminitis in horses during hospitalization: 73 cases (1997-2004).
Authors: Parsons, Orsini, Krafty, Capewell, Boston
Journal: Journal of the American Veterinary Medical Association
Summary
# Editorial Summary Acute laminitis represents a serious complication during equine hospitalisation, yet identifying which hospitalised horses face greatest risk remains clinically challenging. Parsons and colleagues conducted a retrospective case-control analysis of 73 horses that developed laminitis during hospitalisation compared to 146 matched controls, investigating haematological parameters (fibrinogen, WBC count, packed cell volume, total solids) alongside comorbid conditions ranging from pneumonia and endotoxaemia to surgical colic and vascular abnormalities. Whilst univariate analysis highlighted associations between laminitis development and elevated fibrinogen, high PCV, low total solids, and several disease states including endotoxaemia, pneumonia, diarrhoea, and surgical colic, multivariate modelling identified endotoxaemia as the dominant independent risk factor. For practitioners managing hospitalised horses, this finding emphasises the critical importance of vigilant endotoxaemia detection and proactive mitigation strategies—particularly in cases of gastrointestinal disease, respiratory infection, or other systemic inflammatory conditions—as early intervention targeting endotoxic complications may substantially reduce laminitis incidence and associated morbidity during the recovery period.
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Practical Takeaways
- •Monitor hospitalized horses for signs of endotoxemia, particularly those with gastrointestinal or respiratory disease, as early recognition and treatment may prevent secondary laminitis development.
- •Include laminitis prevention protocols when treating conditions associated with endotoxemia (diarrhea, colic surgery, pneumonia) in hospitalized horses.
- •Consider laminitis risk assessment as part of routine monitoring in hospitalized horses, especially those showing evidence of systemic inflammation or gastrointestinal compromise.
Key Findings
- •Endotoxemia was the only factor significantly associated with acute laminitis development in hospitalized horses after multivariate analysis.
- •Pneumonia, endotoxemia, diarrhea, abdominal surgery for colic, and vascular abnormalities were significantly associated with laminitis in univariate analysis.
- •Fibrinogen concentration, PCV, and total solids concentration showed marginal associations with laminitis development.
- •Study analyzed 73 case horses and 146 matched control horses during hospitalization periods (1997-2004).