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Author |
Senior, J.M.; Pinchbeck, G.L.; Allister, R.; Dugdale, A.H.A.; Clark, L.; Clutton, R.E.; Coumbe, K.; Dyson, S.; Clegg, P.D. |
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Title |
Post anaesthetic colic in horses: a preventable complication? |
Type |
Journal Article |
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Year  |
2006 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
38 |
Issue |
5 |
Pages |
479-484 |
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Keywords |
Anesthesia/adverse effects/*veterinary; Animals; Case-Control Studies; Colic/chemically induced/epidemiology/prevention & control/*veterinary; Confidence Intervals; Fasting; Fecal Impaction/complications/epidemiology/veterinary; Horse Diseases/chemically induced/*epidemiology/prevention & control; Horses; Logistic Models; Multivariate Analysis; Odds Ratio; Postoperative Complications/chemically induced/epidemiology/prevention & control/*veterinary; Predictive Value of Tests; Prevalence; Prospective Studies; Risk Factors |
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Abstract |
REASONS FOR PERFORMING STUDY: There is little information on the prevalence of, and risk factors associated with, post anaesthetic colic (PAC) in horses undergoing nonabdominal operations. OBJECTIVES: To undertake the first prospective study of prevalence of PAC and identify risk factors in its development in nonabdominal procedures. METHODS: A multicentre prospective case-control study was conducted, on every horse undergoing anaesthesia for a nonabdominal procedure between April 2004 and June 2005. Colic cases were defined as any horse with recognised signs of abdominal pain within 72 h of general anaesthesia that could not be attributed to any concurrent disease. Five control horses per case were selected randomly from the study population at all hospitals. Multivariable logistic regression analysis was used to examine the relationship between predictor variables and the risk of developing PAC. RESULTS: The estimated mean prevalence of PAC in the study population was 5.2% (95% CI, 2.8, 8.0). However, the prevalence of colic varied between each centre. The most commonly diagnosed cause of colic was impaction. Multivariable analyses showed that the centre involved and the type of surgery performed were associated with an increased risk of PAC. Preoperative food deprivation and the use of opioid drugs were confounding factors. CONCLUSIONS: Prevalence of PAC varied significantly between the 4 hospitals studied; there may be hospital-related covariates that account for this. The type of surgery performed influenced the risk of PAC. POTENTIAL RELEVANCE: Identifying the risk factors for PAC is a prerequisite for its prevention. This study indicates horses at increased risk of PAC that might benefit from a more critical evaluation of post anaesthetic gastrointestinal function and/or the provision of preventative measures. Further investigation is required to explain the variation in prevalence of PAC between centres. |
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Institutes of Evolution, Immunology and Infection Research, University of Edinburgh, UK |
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0425-1644 |
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PMID:16986610 |
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Call Number |
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Serial |
1860 |
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Author |
Cayado, P.; Munoz-Escassi, B.; Dominguez, C.; Manley, W.; Olabarri, B.; Sanchez de la Muela, M.; Castejon, F.; Maranon, G.; Vara, E. |
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Title |
Hormone response to training and competition in athletic horses |
Type |
Journal Article |
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Year |
2006 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Volume |
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Issue |
36 |
Pages |
274-278 |
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Keywords |
Adrenocorticotropic Hormone/*blood; Animals; Case-Control Studies; *Horses/blood/physiology/psychology; Hydrocortisone/*blood; Physical Conditioning, Animal/*physiology; Sports; *Stress, Psychological |
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Abstract |
REASONS FOR PERFORMING STUDY: It is recognised that the amount of psychological stress that an animal encounters determines the degree of response of the hypothalamic-pituitary-adrenal (HPA) axis. In human athletes, the added emotive stress of competition is an important element in the adrenal response. The aim of this study was to examine the effect of show-jumping as well as dressage on stress levels by comparing horses' stress response at a horse show compared to their familiar home. METHODS: Fifty-one horses involved in competition were used. EDTA blood samples were collected before exercise, upon arrived to the schooling area (control), and k over a jump or dressage course. After sampling, plasma was separated and stored at -80 degrees C until determinations of cortisol and ACTH were performed. Fourteen healthy horses not involved in competition were used as control group. RESULTS: Competition induced a significant increase in cortisol and ACTH responses in both, jumping and dressage horses and this effect was more apparent in dressage horses. When horses were most experienced, cortisol and ACTH responses were much lower. CONCLUSION: This study shows that competition elicits a classic physiological stress response in horses and that different training programmes induce different responses. It suggests that horses involved in competition can provide a good model to study the exercise-induced stress response. |
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Hospital SL., Madrid, Spain |
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PMID:17402431 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3705 |
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Author |
Murray, J.K.; Singer, E.R.; Morgan, K.L.; Proudman, C.J.; French, N.P. |
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Title |
The risk of a horse-and-rider partnership falling on the cross-country phase of eventing competitions |
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Journal Article |
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Year |
2006 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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38 |
Issue |
2 |
Pages |
158-163 |
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Keywords |
*Accidental Falls; Animals; Athletic Injuries/epidemiology/*veterinary; Case-Control Studies; Horses/*injuries; Humans; Logistic Models; Physical Conditioning, Animal; Prospective Studies; Risk Factors; Safety; Sports; Time Factors |
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REASONS FOR PERFORMING STUDY: Fatalities resulting from horse falls occurring during the cross-country phase of eventing competitions initiated epidemiological investigation of the risk factors associated with horse falls. OBJECTIVES: To identify variables that increased or decreased the risk of a horse fall during the cross-country phase of an eventing competition. METHODS: Data were collected from randomly selected British Eventing competitions held in Great Britain during 2001 and 2002. Data were obtained for 173 cases (jumping efforts resulting in a fall of the horse-and-rider partnership) and 503 matched controls (jumping efforts not resulting in a fall). The risk of falling was modelled using conditional logistic regression. RESULTS: An increased risk of a horse fall was associated with jumping into or out of water; taking off from good-to-soft, soft or heavy ground; fences with a drop landing; nonangled fences with a spread > or =2 m; and angled fences. Other risk factors included riders who knew that they were in the lead within the competition before the cross-country phase; an inappropriate speed of approach to the fence (too fast or too slow); horse-and-rider partnerships that had not incurred refusals at earlier fences; and riders who received cross-country tuition. CONCLUSIONS: This study has identified modifiable course- and fence-level risk factors for horse falls during the cross-country phase of eventing competitions. The risk of horse and rider injury at eventing competitions should be reduced by 3 simple measures; maintaining good to firm take-off surfaces at fences, reducing the base spread of fences to <2 m and reducing the use of fences at which horses are required to jump into or out of water. Risk reduction arising from course and fence modification needs to be confirmed by intervention studies. Potential relevance: Knowledge of factors that increase or decrease the risk of a horse fall can be used by UK governing bodies of the sport to reduce the risk of horse falls on the cross-country phase of eventing competitions, and reduce the risk of horse and rider injuries and fatalities. As one in 3 horses that fall injure themselves and one in 100 horse falls results in fatality to the horse, we suggest that immediate consideration is given to these recommendations. |
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Epidemiology Group, Faculty of Veterinary Science, University of Liverpool, Leahurst, Chester High Road, Neston, South Wirral CH64 7TE, UK |
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0425-1644 |
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Notes |
PMID:16536386 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3765 |
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Author |
Verheyen, K.; Price, J.; Lanyon, L.; Wood, J. |
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Title |
Exercise distance and speed affect the risk of fracture in racehorses |
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Journal Article |
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Year |
2006 |
Publication |
Bone |
Abbreviated Journal |
Bone |
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39 |
Issue |
6 |
Pages |
1322-1330 |
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Keywords |
Animals; Case-Control Studies; Cohort Studies; England; Exertion; Female; Fractures, Bone/etiology/*veterinary; Horse Diseases/*etiology; Horses/*injuries; Male; Physical Conditioning, Animal/adverse effects/methods; Poisson Distribution; Prospective Studies; Regression Analysis; Risk Factors; Running/injuries/physiology |
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In order to gain insight into those training regimens that can minimise the risk of fracture in athletic populations, we conducted a large epidemiological study in racehorses. Thoroughbred racehorses provide a suitable model for studying fracture development and exercise-related risk factors in physically active populations. They represent a homogeneous population, undertaking intensive exercise programmes that are sufficiently heterogeneous to determine those factors that influence injury risk. Daily exercise information was recorded for a cohort of 1178 thoroughbreds that were monitored for up to 2 years. A total of 148 exercise-induced fractures occurred in the study population. Results from a nested case-control study showed a strong interactive effect of exercise distances at different speeds on fracture risk. Horses that exceeded 44 km at canter (< or =14 m/s) and 6 km at gallop (>14 m/s) in a 30-day period were at particularly increased risk of fracture. These distances equate to ca. 7700 bone loading cycles at canter and 880 loading cycles at gallop. Fifty-six fractures occurred in the subset of study horses that were followed since entering training as yearlings, when skeletally immature (n = 335). Cohort analysis of this data set showed that, in previously untrained bones, accumulation of canter exercise increased the risk of fracture (P < or = 0.01), whereas accumulation of high-speed gallop exercise had a protective effect (P < 0.01). However, increasing distances at canter and gallop in short time periods (up to one month) were associated with an increasing fracture risk. All training exercise involves a balance between the risk of fracture inherent in exposure to loading and the beneficial effect that loading has by stimulating bone cells to produce a more robust architecture. Results from our study provide important epidemiological evidence of the effects of physical exercise on bone adaptation and injury risk and can be used to inform the design of safer exercise regimens in physically active populations. |
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Epidemiology Unit, Animal Health Trust, Newmarket, United Kingdom. kverheyen@rvc.ac.uk |
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8756-3282 |
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PMID:16926125 |
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Equine Behaviour @ team @ |
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4030 |
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Author |
Meral, Y.; Cakiroglu, D.; Sancak, A.A.; Cyftcy, G.; Karabacak, A. |
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Title |
Relationships between serum serotonin and serum lipid levels, and aggression in horses |
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Journal Article |
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Year |
2007 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
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Volume |
114 |
Issue |
1 |
Pages |
30-32 |
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Keywords |
*Aggression; Animals; Behavior, Animal/*physiology; Case-Control Studies; Female; Horses/*blood; Lipids/*blood; Male; Serotonin/*blood |
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Levels of serum serotonin and serum lipids--triglyceride, total cholesterol, low-density lipoprotein, high-density lipoprotein and very low-density lipoprotein, were determined in normal horses and horses diagnosed with aggression on the basis of a questionnaire survey. Blood serotonin levels in aggressive horses were found to be significantly lower than in non-aggressive horses (P < 0.01), but no association was found with respect to blood lipids. |
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Department of Internal Diseases, Faculty of Veterinary Medicine, University of Ondokuz Mayis, Samsun, Turkey. ymeral@omu.edu.t |
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0341-6593 |
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PMID:17252934 |
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Call Number |
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1835 |
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Author |
Rutherford, D.J.; Bladon, B.; Rogers, C.W. |
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Outcome of lag-screw treatment of incomplete fractures of the frontal plane of the radial facet of the third carpal bone in horses |
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Journal Article |
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2007 |
Publication |
New Zealand Veterinary Journal |
Abbreviated Journal |
N Z Vet J |
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55 |
Issue |
2 |
Pages |
94-99 |
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Keywords |
Animals; Bone Screws/*veterinary; Carpus, Animal/radiography/*surgery; Case-Control Studies; Female; Fracture Healing; Horses/*injuries/surgery; Male; Physical Conditioning, Animal; Records/veterinary; Retrospective Studies; Treatment Outcome |
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AIM: To describe outcomes for horses diagnosed with incomplete, non-displaced fractures of the frontal plane of the radial facet (INFR) of the third carpal bone (C3) treated by placement of a lag screw across the fracture under arthroscopic guidance. METHODS: Horses (n=13) diagnosed with INFR and treated between December 1999 and January 2005 using a lag screw placed over the fracture were studied. For each case, five horses matched for sire, age and sex which were not known to have INFR were sought for comparison. Racing performance data were collected from a commercial online database. The racing performance of cases pre- and post-operatively, and of cases and matched horses in the post-operative period was compared. RESULTS: Sixteen INFR were found in the 13 horses. Radiographic evidence of healed fracture lines 2-4 months after surgery was seen in 11/16 (69%) fractures; 11/13 (85%) cases raced again after a median recovery period of 292 (range 149-681) days. Treatment was considered successful in 9/13 (69%) cases, which were still in training or had been retired for reasons other than lameness localised to the middle carpal joint at the end of the study period. Just 6/13 (46%) cases had raced prior to injury. The racing ability pre- and post-operatively of five cases was compared, three (60%) of which performed better post-operatively than they had before. There was no significant difference in racing longevity or ability post-operatively between patients and matched (control) horses. CONCLUSIONS: Post-operatively, there was little difference in the racing performance between horses diagnosed with INFR which had a lag screw placed across the fracture line and horses matched for sire, age and sex which were not known to have INFR. CLINICAL RELEVANCE: Horses which were diagnosed with INFR of C3 and had a lag screw placed across the fracture had a good prognosis for future racing performance. |
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Massey Equine, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand. d.j.rutherford@massey.ac.nz |
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0048-0169 |
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PMID:17410217 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4001 |
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