科研之友
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摘要
Reasons for performing studyDigital hypothermia may be effective for laminitis prophylaxis and therapy, but the efficacy of cooling methods used in clinical practice requires evaluation. ObjectivesTo use hoof wall surface temperature (HWST) to compare several cooling methods used in clinical practice. Study designExperimental crossover design with a minimum washout period of 72h. MethodsSeven 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 8h, during which HWST of the cooled forelimb and the uncooled (control) forelimb was recorded hourly. Results were analysed descriptively. ResultsThe median (range) HWST from 2-8h was lowest for the ice and water immersion methods that included the foot and extended proximally to at least include the pastern: 5.2 degrees C (range: 4.8-7.8 degrees C) for the fluid bag and 2.7 degrees C (2.4-3.4 degrees 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 degrees C (20.6-27.2 degrees C). Dry interface applications (ice packs) confined to the foot only resulted in a median HWST of 21.5 degrees C (19.5-25.5 degrees C) for the coronet sleeve and 19.8 degrees C (17.6-23 degrees 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 degrees C (18.7-23.1 degrees C), compared with the perfused cuff prototype of 5.4 degrees C (4.2-7 degrees C). ConclusionsImmersion of the foot and at least the pastern region in ice and water achieved sustained HWST <10 degrees 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.
- 出版日期2016-1
