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Thromboelastography in obese horses with insulin dysregulation compared to healthy controls
Journal article   Open access   Peer reviewed

Thromboelastography in obese horses with insulin dysregulation compared to healthy controls

Amy L. Lovett, Lyndi L. Gilliam, Benjamin W. Sykes and Dianne McFarlane
Journal of veterinary internal medicine, Vol.36(3), pp.1131-1138
05/2022
DOI: https://doi.org/10.1111/jvim.16421
PMCID: PMC9151488
PMID: 35429197
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Published (Version of record)CC BY-NC-ND V4.0,  Open Access
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Abstract

equine metabolic syndrome hemostatis hypercoagulability obesity oral sugar test viscoelastic testing
Background Both obesity and metabolic syndrome are associated with hypercoagulability in people, increasing the risk of cardiovascular disease and thromboembolic events. Whether hypercoagulability exists in obese, insulin-dysregulated horses is unknown. Hypothesis/Objectives To determine if coagulation profiles differ between healthy horses and those with obesity and insulin dysregulation. Animals Fifteen healthy horses (CON) and 15 obese, insulin-dysregulated horses (OBID). Individuals were university or client owned. Methods Case-control study. Obesity was defined as a body condition score (BCS) ≥7.5/9 (modified Henneke scale). Insulin dysregulation status was assessed by an oral sugar test (OST). Kaolin-thromboelastography and traditional coagulation variables were compared between groups. The direction and strength of the association between coagulation variables and BCS and OST results were determined using Spearman's correlation. Results Thromboelastography variables MA (OBID: 69.5 ± 4.5 mm; CON: 64.8 ± 4.3 mm; P = .007) and G-value (OBID: 11749 ± 2536 dyn/m2; CON: 9319 ± 1650 dyn/m2; P = .004) were higher in OBID compared to CON. Positive correlations between MA and BCS (R = 0.45, P = .01) and serum insulin (T0: R = 0.45, P = .01; T60: R = 0.39, P = .03), and G-value and BCS (R = 0.46, P = .01), and serum insulin (T0: R = 0.48, P = .007; T60: R = 0.43, P = .02; T90: R = 0.38, P = .04) were present. Conclusions and Clinical Importance Obese, insulin-dysregulated horses are hypercoagulable compared to healthy controls.

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