By M. Aleman, P. H. Kass, J. E. Madigan, K. G. Magdesian, N. Pusterla, and L. S. Winfield
Published in the Equine Veterinary Journal (Purchase access to read the complete article)
Summary: Reasons for performing study There are currently few data available on the prognosis and outcome of recumbent horses.
Objectives: To investigate the outcome of hospitalised horses that had been recumbent in the field or hospital and factors affecting their survival within the first 3 days of hospitalisation and survival after 3 days to hospital discharge.
Study Design: Retrospective analysis of clinical records.
Methods: Records of 148 horses admitted to the William R. Pritchard Veterinary Medical Teaching Hospital, University of California Davis from January 1995 to December 2010 with a history of recumbency or horses that became recumbent while hospitalised were evaluated. Exact logistic regression was used to assess the association between clinical parameters and survival within the first 3 days of hospitalisation and survival to hospital discharge after 3 days.
Results: There were 109 nonsurvivors and 39 survivors. Multivariate analysis showed variables associated with an increased odds of death within the first 3 days of hospitalisation included duration of clinical signs prior to presentation, with horses showing clinical signs for over 24 h having increased odds of death (P = 0.043, odds ratio [OR] 4.16, 95% confidence interval [95% CI] 1.04–16.59), the presence of band neutrophils (P = 0.02, OR 7.94, 95% CI 1.39–45.46), the horse not using the sling (P = 0.031, OR 4.22, 95% confidence interval 1.14–15.68) and horses that were unable to stand after treatment (P<0.0001, OR 231.15, 95% CI 22.82–2341.33). Increasing cost was associated with lower odds of death (P = 0.017, OR 0.96, for each additional $100 billed, 95% CI 0.93–0.99).
Conclusions: This study demonstrates that the duration of clinical signs, response to treatment and the ability of horses to use a sling are associated with survival to hospital discharge for recumbent horses.