Parenteral nutrition for horses with gastrointestinal disease: a retrospective study of 79 cases.
Authors: Lopes M A F, White N A
Journal: Equine veterinary journal
Summary
# Editorial Summary: Parenteral Nutrition in Equine Gastrointestinal Disease Parenteral nutrition (PN) is routinely offered as supportive care for horses with severe gastrointestinal disease, yet robust evidence for its efficacy has been lacking until this retrospective analysis of 79 treatment courses between 1992 and 2000. The researchers examined clinical records to identify factors associated with survival, complications, and appropriate patient selection for this costly intervention. Overall mortality was 48.1%, which the authors attributed primarily to disease severity rather than PN complications; hyperglycaemia emerged as the most frequent PN-related issue. Survivors tended to receive longer courses of PN with higher vitamin supplementation and better initial plasma protein levels, whilst non-survivors paradoxically received more lipid emulsion and larger volumes of plasma transfusion—potentially reflecting more aggressive attempts to salvage critically compromised animals. The findings suggest that earlier intervention, adequate vitamin provision, and careful monitoring of glucose metabolism may improve outcomes, though the heterogeneity of gastrointestinal conditions studied (inflammatory disease, strangulated and non-strangulated obstructions) prevented definitive conclusions about which patients genuinely benefit from PN versus which might recover adequately with enteral support alone, highlighting the need for prospective controlled trials to guide clinical decision-making.
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Practical Takeaways
- •Parenteral nutrition can be used as supportive care in horses with severe gastrointestinal disease, but its direct benefit on survival remains unclear due to disease heterogeneity—prospective studies are needed to establish clear selection criteria
- •Monitor for hyperglycaemia as the most common PN complication; ensure adequate vitamin supplementation as survivors had higher vitamin content in their PN solutions
- •Consider disease type when formulating PN: inflammatory conditions may benefit from higher glucose infusion rates and vitamins, while obstructive cases may require different lipid and glucose protocols
Key Findings
- •Overall fatality rate was 48.1%, attributed to severity of primary disease rather than parenteral nutrition efficacy
- •Hyperglycaemia was the most common complication associated with parenteral nutrition
- •Survivors received longer courses of parenteral nutrition with higher vitamin content and plasma protein at initiation compared to nonsurvivors
- •Higher proportion of nonsurvivors received lipid emulsion and underwent multiple laparotomies, with significantly larger plasma volumes administered