A comparison of seven methods for continuous therapeutic cooling of the equine digit

van Eps, A. W. and Orsini, J. A. (2016) A comparison of seven methods for continuous therapeutic cooling of the equine digit. Equine Veterinary Journal, 48 1: 120-124. doi:10.1111/evj.12384


Author van Eps, A. W.
Orsini, J. A.
Title A comparison of seven methods for continuous therapeutic cooling of the equine digit
Journal name Equine Veterinary Journal   Check publisher's open access policy
ISSN 2042-3306
0425-1644
Publication date 2016-01
Sub-type Article (original research)
DOI 10.1111/evj.12384
Open Access Status Not Open Access
Volume 48
Issue 1
Start page 120
End page 124
Total pages 5
Place of publication Hoboken, United States
Publisher John Wiley & Sons
Collection year 2017
Language eng
Formatted abstract
Reasons for performing study:  Digital hypothermia may be effective for laminitis prophylaxis and therapy, but the efficacy of cooling methods used in clinical practice requires evaluation.

Objectives:  
To use hoof wall surface temperature (HWST) to compare several cooling methods used in clinical practice.

Study design:  Experimental crossover design with a minimum washout period of 72 h.

Methods:  Seven cooling methods (commercially available ice packs, wraps and boots) and one prototypical dry-sleeve device were applied to a single forelimb in 4 horses for 8 h, during which HWST of the cooled forelimb and the uncooled (control) forelimb was recorded hourly. Results were analysed descriptively.

Results:  The median (range) HWST from 2–8 h was lowest for the ice and water immersion methods that included the foot and extended proximally to at least include the pastern: 5.2°C (range: 4.8–7.8°C) for the fluid bag and 2.7°C (2.4–3.4°C) for the ice boot. An ice boot that included the distal limb but not the foot resulted in a median HWST of 25.7°C (20.6–27.2°C). Dry interface applications (ice packs) confined to the foot only resulted in a median HWST of 21.5°C (19.5–25.5°C) for the coronet sleeve and 19.8°C (17.6–23°C) for a commercial ice pack. For the dry interface applications that included the foot and distal limb, the median HWST was much higher for the ice pack device, 19.9°C (18.7–23.1°C), compared with the perfused cuff prototype of 5.4°C (4.2–7°C).

Conclusions:  Immersion of the foot and at least the pastern region in ice and water achieved sustained HWST <10°C as did a prototype perfused cuff device with a dry interface. Variation between cooling methods may have a profound effect on HWST and therefore efficacy in clinical cases where laminitis prophylaxis or therapy is the goal.
Keyword Cryotherapy
Hoof
Horse
Hypothermia
Laminitis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: HERDC Pre-Audit
 
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