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
Publication date 2016-01-01
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
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.

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
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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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
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