The impact of a stress-reducing protocol on the quality of pre-anaesthesia in cats.

INTRODUCTION: Transport to the clinic is a major source of stress for cats. The process involves being put into a carrier, driven in a car and handled. Cats are therefore removed from the safe-haven of their territory and experience many stressful stimuli and interactions. METHODS: In the present study, 31 cats were transported to the clinic following a low-stress transport protocol and compared with a control group of 36 cats whose owners did not follow the protocol. This protocol involved preparing a cat carrier basket with F3 pheromone and keeping it covered and stable during the car journey from the home to the clinic. Pre-anaesthesia information was recorded for cardiac rate, respiratory rate, tolerance to handling, time for sedation to be achieved and dose of propofol required for induction and endotracheal intubation. RESULTS: The group exposed to the low-stress transport protocol took less time to reach sedation and needed a lower dose of propofol for induction than the control group. CONCLUSION: These results suggest that, in cats, pre-anaesthetic and induction requirements are influenced by lower-stress transport and handling.

[Lifting techniques in bovine recumbency]. / Hebetechniken bei festliegenden Rindern.

INTRODUCTION: In most cases, bovine recumbency (downer cow syndrome) is a complication of periparturient hypocalcemia, but may also be caused by other metabolic disorders, trauma, toxic mastitis or metritis. An important treatment measurement in the recumbent cattle is to bring the cow to its feet, in order to avoid quickly occurring secondary damage. Various lifting systems are on the market, such as a cow lift with a supporting harness or hip clamps. Such lifting systems are easy to use and relatively inexpensive. However, these techniques can cause secondary injuries and ischemic pressure damage. An alternative method is the use of a specially designed flotation tank. The buoyancy of the water gently lifts the cattle avoiding secondary, neuromuscular lesions. The success rate in the therapy of recumbent cattle can be significantly improved by the correct and early use of suitable lifting techniques. In this review, the most common lifting techniques for recumbent cattle are summarized.

INTRODUCTION: La parésie chez les bovins est généralement provoquée par une carence en calcium liée à la mise-bas mais peut également être due à d'autres troubles métaboliques, à un traumatisme, à une mammite toxique ou à une métrite. Le relevage des animaux affectés est une étape importante dans le concept de thérapie pour les bovins souffrant de parésie afin d'éviter de rapides dommages secondaires. Il existe sur le marché plusieurs systèmes qui peuvent être utilisés, tels que des appareils de relevage avec des sangles, des hamacs ou des pinces de hanche. Ces aides au relevage sont rapides à mettre en œuvre, faciles à utiliser et relativement peu coûteuses. Cependant, il faut se rappeler que ces techniques peuvent causer d'autres blessures ainsi que des lésions de pression. Une autre méthode consiste à utiliser un bain d'eau. La poussée de l'eau soulève l'animal en douceur et évite ainsi les lésions neuromusculaires secondaires. Le taux de succès du traitement des patients parésiques peut être significativement amélioré par l'utilisation correcte et précoce de techniques de levage appropriées. Dans cette revue, les techniques de levage les plus courantes pour les bovins parésiques sont résumées et brièvement présentées.

Measurement of intraocular pressure in healthy anesthetized horses during hoisting.

OBJECTIVE: To measure intraocular pressure (IOP) in horses during hoisting after induction of anesthesia. STUDY DESIGN: Prospective nonrandomized clinical study. ANIMALS: Eighteen healthy adult horses aged [mean±standard deviation (SD)] 10±4.2 years and weighing 491±110 kg anesthetized for elective procedures. METHODS: IOP was measured in the superior eye of each horse based on planned recumbency after induction of anesthesia. Measurements were taken directly after premedication with xylazine or detomidine with butorphanol, after induction with diazepam-ketamine, after intubation, when suspended by the hoist and on the operating table. During hoisting, the head was supported and the eye-heart height was measured to account for variations in head positioning among patients. IOPs were compared across time points using repeated-measures analysis of variance. Regression was used to compare IOP outcome with potential cofactors. RESULTS: Compared with measurements after premedication (17.5±2.5 mmHg) (mean±SD), hoisting significantly increased IOP (32.4±15.3 mmHg) (p<0.01). The highest recorded IOP in the hoist was 80.0 (range, 16.0-80.0) mmHg. The difference in IOP between premedication and hoisting was 15.0±16.2 (range, -1.0 to 68.0) mmHg. Body weight had a significant effect on absolute IOP and change in IOP in the hoist (p<0.01). CONCLUSIONS AND CLINICAL RELEVANCE: Hoist IOP was significantly higher than post-premedication IOP with heavier horses having higher hoist IOPs and greater increases in IOP. The clinician should take this relationship into account when anesthetizing and hoisting larger horses where an increase in IOP could be detrimental.

Successful implementation of cooperative handling eliminates the need for restraint in a complex non-human primate disease model.

BACKGROUND: Streptozotocin-induced diabetic non-human primates are used to study efficacy and safety of innovative immunosuppression after islet transplantation. We implemented a training program for medical management of a chronic disease state. METHODS: Cooperation with hand feeding and drinking, shifting, and limb presentation were trained utilizing predominately positive but also negative reinforcement in 52 animals compared with 28 macaques subjected to conventional physical and/or chemical restraint. The success and timing of behavior acquisition was evaluated in a representative subset of 14 animals. RESULTS: Over 90% of animals were successful in behavior acquisition. Programmatically this resulted in complete elimination of chair restraint and negligible requirement for sedation. About half of the trained animals had no-to-moderate thymic involution, indicative of a substantial reduction in stress. CONCLUSION: Cooperative handling enhances animal well-being. This contributes to validity of scientific results and eliminates model-induced confounding that can obstruct interpretation of safety and efficacy data.

Vertical dimensions of suspended horses.

REASONS FOR STUDY: The dimensions of anaesthetised hobbled horses during suspension and transfer onto the operating table are unknown. These data are required for the cost-effective construction of equine surgical facilities. OBJECTIVES: To measure the distance from the toe to dependent back margin (Bsusp) and poll (Psusp) of anaesthetised suspended horses and correlate them with readily obtained measures from standing animals. METHODS: Digital photographs of suspended horses were taken in the anaesthesia induction box at a fixed position that allowed trigonometric determination of Bsusp and Psusp. These values were linked with body mass, height at the withers (Wstand), the length of the crest from the poll to the withers (crest) and of the back (back) from the withers to the crop, by deriving an equine morphological index (EMI) using principal component analysis. The EMI and other linear variables were then subjected to single variable regression analysis. RESULTS: EMI was 0.531mass((kg)) + 0.528Wstand((cm)) + 0.469crest((cm)) + 0.468back((cm)) . Bsusp was most accurately estimated using the expression Bsusp= 118.71 + 0.128EMI while Psusp was most strongly associated with Wstand, i.e. Psusp= 46.9 + 1.01Wstand((cm)) . CONCLUSIONS: The height of suspended horses at the most ventral margin of the back and the poll can be estimated from measures taken from the standing animal. POTENTIAL RELEVANCE: The data will allow the more informed planning and construction of equine surgical facilities in which mechanical hoists are used.