Sequential plasma lactate concentrations as prognostic indicators in adult equine emergencies.
Abstract: Sequential lactate concentration ([LAC]) measurements have prognostic value in that hospitalized humans and neonatal foals that have a delayed return to normolactatemia have greater morbidity and case fatality rate. Objective: Prognosis for survival is decreased in horses with a delayed return to normal [LAC]. Methods: Two hundred and fifty adult horses presented for emergency evaluation excepting horses evaluated because of only ophthalmologic conditions, superficial wounds, and septic synovitis without systemic involvement. Methods: Prospective observational study. [LAC] was measured at admission and then at 6, 12, 24, 48, and 72 hours after admission. The change in [LAC] over time ([LAC]deltaT) was calculated from changes in [LAC] between sampling points. Results: Median [LAC] was significantly (P < .001) higher at admission in nonsurvivors (4.10 mmol/L [range, 0.60-18.20 mmol/L]) when compared with survivors (1.30 mmol/L [range, 0.30-13.90 mmol/L]) and this difference remained at all subsequent time points. The odds ratio for nonsurvival increased from 1.29 (95% confidence interval 1.17-1.43) at admission to 49.90 (6.47-384) at 72 hours after admission for every 1 mmol/L increase in [LAC]. [LAC]deltaT was initially positive in all horses but became negative and significantly lower in nonsurvivors for the time periods between 24-72 hours (- 0.47, P = .001) and 48-72 hours (- 0.07, P = .032) when compared with survivors (0.00 at both time periods) consistent with lactate accumulation in nonsurvivors. Conclusions: These results indicate that lactate metabolism is impaired in critically ill horses and [LAC]deltaT can be a useful prognostic indicator in horses.
Publication Date: 2009-11-21 PubMed ID: 19925572DOI: 10.1111/j.1939-1676.2009.0419.xGoogle Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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This research study investigates the correlation between sequential plasma lactate concentrations and prognostic indicators in adult equine emergencies. It discovers an impaired lactate metabolism in critically ill horses and establishes that lactate concentration measurements can be a useful prognostic indicator.
Overview of the Study
- The research involved studying 250 horses that were presented for an emergency evaluation. Horses being evaluated for just ophthalmologic conditions, superficial wounds, and septic synovitis without systemic involvement were excluded.
- This prospective observational study intended to track the connection between prognosis for survival and the amount of time taken for plasma lactate concentrations to return to normal levels in equine patients.
Methods of the Study
- The researchers observed the difference between the lactate concentration at admission and then subsequently at 6, 12, 24, 48, and 72 hours after admission.
- The alteration in the lactate concentration over time, technically noted as [LAC]deltaT, was calculated by querying the changes between the different sampling points.
Results of the Study
- The findings highlighted that the plasma lactate concentration was significantly higher at admission in nonsurviving horses when compared to those that survived.
- Furthermore, data showed that for every 1 mmol/L increase in lactate concentration, the odds ratio for non-survival rose significantly, particularly from admission to the 72 hours mark post-admission.
- The change in lactate concentration over time was initially positive in all horses but exhibited a significant drop among the nonsurvivors between the 24 to 72-hour mark, as well as the 48 to 72-hour period, pointing towards lactate accumulation as a potential risk factor.
Conclusions of the Study
- Consequently, the results suggest that critical illness in horses impairs lactate metabolism.
- The study concludes the lactate concentration measurement over time can act as a valuable prognostic indicator in horses’ treatment, marking a potential path for improvement in veterinary care.
Cite This Article
APA
Tennent-Brown BS, Wilkins PA, Lindborg S, Russell G, Boston RC.
(2009).
Sequential plasma lactate concentrations as prognostic indicators in adult equine emergencies.
J Vet Intern Med, 24(1), 198-205.
https://doi.org/10.1111/j.1939-1676.2009.0419.x Publication
Researcher Affiliations
- Section of Medicine, Department of Clinical Studies-New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, PA, USA.
MeSH Terms
- Animals
- Anticoagulants
- Blood Specimen Collection
- Emergencies / veterinary
- Female
- Horse Diseases / pathology
- Horses
- Lactic Acid / blood
- Male
- Predictive Value of Tests
- Sodium Fluoride
Citations
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