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Topic:Mortality

Mortality in horses refers to the incidence and causes of death within equine populations. Understanding mortality is important for assessing health risks, improving management practices, and guiding veterinary care. Various factors contribute to mortality in horses, including age, breed, health status, and environmental conditions. Common causes of death in horses include colic, injury, infectious diseases, and age-related conditions. Mortality rates and patterns can vary significantly depending on the population and geographic location. This page compiles peer-reviewed research studies and scholarly articles that investigate the epidemiology, causes, and trends of mortality in horses, providing insights into preventive measures and management strategies to reduce mortality rates.
Factors associated with survival of horses following relaparotomy.
Equine veterinary journal    October 13, 2016   Volume 49, Issue 4 448-453 doi: 10.1111/evj.12635
Findley JA, Salem S, Burgess R, Archer DC.Relaparotomy may be required to investigate and manage complications that occur following surgical management of colic. Objective: To report factors associated with survival following relaparotomy. Methods: Retrospective cohort study. Methods: Records of horses that had undergone exploratory laparotomy for treatment of colic over a 10-year period (2002-2012) and had undergone relaparotomy <8 weeks following the initial surgery were reviewed. Descriptive data were generated and association with survival time was modelled using Cox proportional hazards models. Results: Relaparotomy was perfor...
Risk factors in equine transport-related health problems: A survey of the Australian equine industry.
Equine veterinary journal    October 13, 2016   Volume 49, Issue 4 507-511 doi: 10.1111/evj.12631
Padalino B, Raidal SL, Hall E, Knight P, Celi P, Jeffcott L, Muscatello G.Transportation can affect equine health and is a potential source of economic loss to the industry. Objective: To identify journey (duration, vehicle, commercial or noncommercial) and horse (sex, age, breed, use, amateur or professional status) characteristics associated with the development of transport-related health problems in horses. Methods: Cross-sectional online survey. Methods: An online survey was conducted targeting amateur and professional participants in the Australian equine industry; eligible respondents were required to organise horse movements at least monthly. Respondents pro...
Risk factors associated with fatal injuries in Thoroughbred racehorses competing in flat racing in the United States and Canada.
Journal of the American Veterinary Medical Association    October 5, 2016   Volume 249, Issue 8 931-939 doi: 10.2460/javma.249.8.931
Georgopoulos SP, Parkin TD.OBJECTIVE To identify risk factors associated with fatal injuries in Thoroughbred racehorses in the United States and Canada. DESIGN Retrospective study. ANIMALS 1,891,483 race starts by 154,527 Thoroughbred racehorses at 89 racetracks in the United States and Canada from 2009 to 2013. PROCEDURES Data were extracted from the Equine Injury Database, which contained information for 93.9% of all official flat racing events in the United States and Canada during the 5-year observation period. Forty-four possible risk factors were evaluated by univariate then multivariable logistic regression to id...
Autopsy imaging for cardiac tamponade in a Thoroughbred foal.
Journal of equine science    September 30, 2016   Volume 27, Issue 3 115-118 doi: 10.1294/jes.27.115
Yamada K, Sato F, Horiuchi N, Higuchi T, Kobayashi Y, Sasaki N, Nambo Y.Autopsy imaging (Ai), postmortem imaging before necropsy, is used in human forensic medicine. Ai was performed using computed tomography (CT) for a 1-month-old Thoroughbred foal cadaver found in a pasture. CT revealed pericardial effusion, collapse of the aorta, bleeding in the lung lobe, gas in the ventricles and liver parenchyma, and distension of the digestive tract. Rupture in the left auricle was confirmed by necropsy; however, it was not depicted on CT. Therefore, Ai and conventional necropsy are considered to complement each other. The cause of death was determined to be traumatic cardi...
Fatal Oleander Toxicosis in Two Miniature Horses.
Journal of the American Animal Hospital Association    September 29, 2016   Volume 52, Issue 6 398-402 doi: 10.5326/JAAHA-MS-6433
Butler J, Khan S, Scarzella G.Two young American miniature horses from the same farm were evaluated by a veterinarian due to presence of lethargy, anorexia, and cardiac arrhythmias. Both horses were treated aggressively with IV fluids and other supportive measures. The first horse died approximately 72 hr after the start of clinical signs and the second horse was humanely euthanized due to poor response to treatment. Oleander toxicosis was suspected based on the types of clinical signs present and due to several oleander plants and dried leaves present on the property. Oleander toxicosis was confirmed by the presence of ol...
Laparoscopic Closure of the Nephrosplenic Space in Horses with Nephrosplenic Colonic Entrapment: Factors Associated with Survival and Colic Recurrence.
Veterinary surgery : VS    September 13, 2016   Volume 45, Issue S1 O60-O69 doi: 10.1111/vsu.12549
Nelson BB, Ruple-Czerniak AA, Hendrickson DA, Hackett ES.1) To identify factors associated with short-term survival and time to death after hospital discharge in horses with nephrosplenic entrapment (NSE). 2) To compare the frequency of recurrent colic episodes in horses with and without laparoscopic closure of the nephrosplenic space. Methods: Historical cohort with a nested case control. Methods: Client-owned horses. Methods: Medical records of horses treated for NSE from January 1, 2002 to June 1, 2014 were reviewed. Data collected included signalment, physical examination parameters, laboratory results, diagnostic findings, and treatments. Facto...
Comparison of clinical findings and short-term survival between horses with intestinal entrapment in the gastrosplenic ligament and horses with intestinal entrapment in the epiploic foramen.
Journal of the American Veterinary Medical Association    September 2, 2016   Volume 249, Issue 6 660-667 doi: 10.2460/javma.249.6.660
Kilcoyne I, Dechant JE, Nieto JE.OBJECTIVE To compare clinical findings and short-term outcome for horses with intestinal entrapment in the gastrosplenic ligament (GLE) with those of horses with intestinal entrapment in the epiploic foramen (EFE). DESIGN Retrospective case-control study. ANIMALS 43 horses with GLE (cases) and 73 horses with EFE (controls). PROCEDURES Medical records of horses examined because of colic at a veterinary teaching hospital between 1992 and 2012 were reviewed. Signalment was extracted from medical records for all horses with colic (colic population), and additional information regarding colic histo...
[Dangerous animals].
Duodecim; laaketieteellinen aikakauskirja    August 16, 2016   Volume 132, Issue 13-14 1247-1251 
Koljonen V, Söderlund T, Mäkisalo H, Gissler M.Contacts between humans and animals inevitably involve encounters possibly resulting in the human being injured. During the period of 2000 to 2014 almost 90 people died in this kind of conflict in Finland. Of these deaths, one third were associated with horses. In addition, over the same period 85 people died in traffic accidents in which an animal was hit by a car. Accidents requiring hospitalization occurred for approx. 8 000 people.
Full-Genome Sequence of a Neuroinvasive West Nile Virus Lineage 2 Strain from a Fatal Horse Infection in South Africa.
Genome announcements    July 28, 2016   Volume 4, Issue 4 e00740-16 doi: 10.1128/genomeA.00740-16
Mentoor JL, Lubisi AB, Gerdes T, Human S, Williams JH, Venter M.We report here the complete genome sequence of a lineage 2 West Nile virus (WNV) strain that resulted in fatal neurological disease in a horse in South Africa. Several recent reports exist of neurological disease associated with lineage 2 WNV in humans and horses in South Africa and Europe; however, there are a lack of sequencing data from recent fatal cases in Southern Africa, where these strains likely originate. A better understanding of the genetic composition of highly neuroinvasive lineage 2 strains may facilitate the identification of putative genetic factors associated with increased v...
Welfare, Quality of Life, and Euthanasia of Aged Horses.
The Veterinary clinics of North America. Equine practice    July 28, 2016   Volume 32, Issue 2 355-367 doi: 10.1016/j.cveq.2016.04.011
McGowan CM, Ireland JL.Duration of ownership strengthens the human-horse bond, affecting decision-making about the horse's welfare, quality of life (QoL), and euthanasia. Most owners consider their geriatric horses to have good or excellent QoL; however, increasing age is negatively associated with QoL. Management factors are important. The most common reasons for euthanasia include musculoskeletal disorders or lameness, colic, and nonspecific chronic diseases. The decision to euthanize is difficult, so the advice of the veterinarian and QoL are important. This article focuses on the human-horse bond, assessment of ...
Has intravenous lidocaine improved the outcome in horses following surgical management of small intestinal lesions in a UK hospital population?
BMC veterinary research    July 27, 2016   Volume 12, Issue 1 157 doi: 10.1186/s12917-016-0784-7
Salem SE, Proudman CJ, Archer DC.Perioperative lidocaine treatment is commonly used in horses that undergo surgical treatment of colic, to prevent or treat postoperative ileus and reduce the effects of intestinal ischaemia-reperfusion injury. However, its clinical efficacy has not been evaluated in a large population of horses undergoing small intestinal surgery. The aim of the current study was to evaluate whether systemic lidocaine administration reduced the prevalence, volume and duration of postoperative reflux and improved rates of survival following surgical treatment of small intestinal lesions. Data were collected as ...
Mitochondrial function is altered in horse atypical myopathy.
Mitochondrion    June 29, 2016   Volume 30 35-41 doi: 10.1016/j.mito.2016.06.005
Lemieux H, Boemer F, van Galen G, Serteyn D, Amory H, Baise E, Cassart D, van Loon G, Marcillaud-Pitel C, Votion DM.Equine atypical myopathy in Europe is a fatal rhabdomyolysis syndrome that results from the ingestion of hypoglycin A contained in seeds and seedlings of Acer pseudoplatanus (sycamore maple). Acylcarnitine concentrations in serum and muscle OXPHOS capacity were determined in 15 atypical myopathy cases. All but one acylcarnitine were out of reference range and mitochondrial respiratory capacity was severely decreased up to 49% as compared to 10 healthy controls. The hallmark of atypical myopathy thus consists of a severe alteration in the energy metabolism including a severe impairment in muscl...
Descriptive epidemiology of veterinary events in flat racing Thoroughbreds in Great Britain (2000 to 2013).
Equine veterinary journal    June 22, 2016   Volume 49, Issue 3 275-281 doi: 10.1111/evj.12592
Rosanowski SM, Chang YM, Stirk AJ, Verheyen KL.To date, no large scale studies have reported race-day events requiring veterinary attention in British Thoroughbreds racing on the flat. Quantifying and describing common injuries and health conditions affecting racehorses will enable targeted risk factor analysis aimed at reducing their occurrence. Objective: To describe the type and incidence of race-day veterinary events experienced by Thoroughbred racehorses participating in flat racing in the UK. Methods: Retrospective cohort study (2000 to 2013). Methods: Veterinary events recorded by race-day veterinarians were retrieved and linked to ...
Scoring System for Multiple Organ Dysfunction in Adult Horses with Acute Surgical Gastrointestinal Disease.
Journal of veterinary internal medicine    June 14, 2016   Volume 30, Issue 4 1276-1283 doi: 10.1111/jvim.14321
McConachie E, Giguère S, Barton MH.The prevalence of multiple organ dysfunction syndrome (MODS) in horses with acute surgical gastrointestinal (GI) disease is unknown. Currently, there are no validated criteria to confirm MODS in adult horses. Objective: To develop criteria for a MODS score for horses with acute surgical colic (MODS SGI) and evaluate the association with 6-month survival. To compare the MODS SGI score with a MODS score extrapolated from criteria used in people (MODS EQ). Methods: Adult horses that required exploratory laparotomy (n = 62) for colic. Healthy adult horses undergoing elective surgical procedures (n...
Association of Presence of Band Cells and Toxic Neutrophils with Systemic Inflammatory Response Syndrome and Outcome in Horses with Acute Disease.
Journal of veterinary internal medicine    May 23, 2016   Volume 30, Issue 4 1284-1292 doi: 10.1111/jvim.13968
Lambert JL, Fernandez NJ, Roy MF.Band cells and toxic neutrophils are thought to indicate acute and severe systemic illness but no studies have investigated their importance in adult equine emergency admissions. Objective: The objective of this study was to evaluate the association of band cells and toxic neutrophils with systemic inflammatory response syndrome (SIRS) and outcome in horses. Methods: One hundred and five adult horses admitted on emergency basis to a private primary referral practice. Methods: Prospective observational study with sample collection. All horses admitted on emergency basis over the study period we...
Exercising arrhythmias and sudden cardiac death in horses: Review of the literature and comparative aspects.
Equine veterinary journal    May 9, 2016   Volume 48, Issue 4 406-413 doi: 10.1111/evj.12580
Navas de Solis C.Arrhythmias are common in equine athletes during and immediately after exercise. Many of these rhythm variations are not clinically relevant. In horses, a link between different exercising arrhythmias and poor performance or between exercising arrhythmias and sudden cardiac death (SCD) is strongly suspected but not fully understood or proven. SCD during races or competitions is rare, but has catastrophic consequences for the safety of the human partner and public perceptions of welfare during equestrian sports. This review summarises current knowledge of equine exercise arrhythmias and their i...
An Adenoviral Vector Based Vaccine for Rhodococcus equi.
PloS one    March 23, 2016   Volume 11, Issue 3 e0152149 doi: 10.1371/journal.pone.0152149
Giles C, Ndi O, Barton MD, Vanniasinkam T.Rhodococcus equi is a respiratory pathogen which primarily infects foals and is endemic on farms around the world with 50% mortality and 80% morbidity in affected foals. Unless detected early and treated appropriately the disease can be fatal. Currently, there is no vaccine available to prevent this disease. For decades researchers have endeavoured to develop an effective vaccine to no avail. In this study a novel human adenoviral vector vaccine for R. equi was developed and tested in the mouse model. This vaccine generated a strong antibody and cytokine response and clearance of R. equi was d...
[Cervical spine injury in equestrian sports].
Der Unfallchirurg    March 16, 2016   Volume 120, Issue 6 494-500 doi: 10.1007/s00113-016-0154-8
Schröter C, Schulte-Sutum A, Busch M, Winkelmann M, Macke C, Zeckey C, Krettek C, Mommsen P.The cervical spine is considered fragile and vulnerable to injuries in equestrian sport. This retrospective study investigates the injury pattern and severity. Patients of the medical university in Hannover from the years 2006-2011, who had an equestrian accident, were identified. Patients who had been injured in the course of their work were excluded. Results counted with a p-value < 0.05 were considered significant. In 13.1% of patients, there were 71 cervical spine injuries (92.4% female; 7.6% male). The mean age was 27.1 ± 13.2 years. Of these, 86.4% associated the injury to the r...
Factors associated with outcome in 94 hospitalised foals diagnosed with neonatal encephalopathy.
Equine veterinary journal    March 16, 2016   Volume 49, Issue 2 207-210 doi: 10.1111/evj.12553
Lyle-Dugas J, Giguère S, Mallicote MF, Mackay RJ, Sanchez LC.Neonatal encephalopathy is the most common neurological abnormality identified in neonatal foals, but its clinical course has been rarely characterised. Objective: To describe factors associated with nonsurvival in a population of foals diagnosed with neonatal encephalopathy. Methods: Retrospective cross-sectional clinical study. Methods: Cases were selected from equine neonatal (≤14 days of age) admissions between 1996 and 2007. Multivariable logistic regression was used to identify clinical parameters, laboratory variables and therapeutic interventions associated with nonsurvival. Results:...
Repeated measurements of blood lactate concentration as a prognostic marker in horses with acute colitis evaluated with classification and regression trees (CART) and random forest analysis.
Veterinary journal (London, England : 1997)    March 15, 2016   Volume 213 18-23 doi: 10.1016/j.tvjl.2016.03.012
Petersen MB, Tolver A, Husted L, Tølbøll TH, Pihl TH.The objective of this study was to investigate the prognostic value of single and repeated measurements of blood l-lactate (Lac) and ionised calcium (iCa) concentrations, packed cell volume (PCV) and plasma total protein (TP) concentration in horses with acute colitis. A total of 66 adult horses admitted with acute colitis (<24 h) to a referral hospital in the 2002-2011 period were included. The prognostic value of Lac, iCa, PCV and TP recorded at admission and 6 h post admission was analysed with univariate analysis, logistic regression, classification and regression trees, as well as ran...
Equine anaesthesia-associated mortality: where are we now?
Veterinary anaesthesia and analgesia    March 11, 2016   Volume 43, Issue 3 242-255 doi: 10.1111/vaa.12372
Dugdale AH, Taylor PM.To review the literature concerning mortality associated with general anaesthesia in horses and to assess whether there is evidence for a reduction in mortality over the 20 years since the Confidential Enquiry into Perioperative Equine Fatalities (CEPEF). Methods: PubMed, Scopus, Google Scholar. Search terms used: horse; pony; equine; anaesthesia; anesthesia; recovery; morbidity, and mortality. Conclusions: The most recent studies, in which isoflurane and sevoflurane have been more commonly used for anaesthesia maintenance, report fewer intraoperative cardiac arrests than older studies in whi...
Health Problems and Risk Factors Associated with Long Haul Transport of Horses in Australia.
Animals : an open access journal from MDPI    December 10, 2015   Volume 5, Issue 4 1296-1310 doi: 10.3390/ani5040412
Padalino B, Hall E, Raidal S, Celi P, Knight P, Jeffcott L, Muscatello G.Equine transportation is associated with a variety of serious health disorders causing economic losses. However; statistics on horse transport are limited and epidemiological data on transport related diseases are available only for horses transported to abattoirs for slaughter. This study analysed reports of transport related health problems identified by drivers and horse owners for 180 journeys of an Australian horse transport company transporting horses between Perth and Sydney (~4000 km) in 2013-2015. Records showed that 97.2% (1604/1650) of the horses arrived at their destination with no...
Assessment of fallen equine data in France and their usefulness for epidemiological investigations.
Research in veterinary science    December 9, 2015   Volume 104 96-99 doi: 10.1016/j.rvsc.2015.12.005
Tapprest J, Borey M, Dornier X, Morignat E, Calavas D, Hendrikx P, Ferry B, Sala C.Quantitative information about equine mortality is relatively scarce, yet it could be of great value for epidemiology purposes. Several European projects based on the exploitation of data from rendering plants have been developed to improve livestock surveillance. Similar data are available for equines in France but have never been studied to date. The objective of this research was to evaluate the potential of the French Ministry of Agriculture's Fallen Stock Data Interchange (FSDI) database to provide quantitative mortality information on the French equine population. The quality of FSDI equ...
Ligation of the ipsilateral common carotid artery and topical treatment for the prevention of epistaxis from guttural pouch mycosis in horses.
The Veterinary record    December 9, 2015   Volume 178, Issue 2 44 doi: 10.1136/vr.103376
Cousty M, Tricaud C, De Beauregard T, Picandet V, Bizon-Mercier C, Tessier C.The objective of the study was to evaluate the effect of ligation of the ipsilateral common carotid artery (CCA) combined with various antimycotic treatments for the prevention of epistaxis in horses with guttural pouch mycosis. For each case, ipsilateral ligation of the CCA was performed, followed by application of various topical medications under endoscopic guidance. Frequency and number of treatments, outcome and recurrence of haemorrhage were retrospectively recorded. Twenty-four horses were included. Topical medication was administered by detachment of the diphtheric membrane and sprayin...
Sepsis and Septic Shock in the Equine Neonate.
The Veterinary clinics of North America. Equine practice    November 28, 2015   Volume 31, Issue 3 483-496 doi: 10.1016/j.cveq.2015.09.001
Fielding CL, Magdesian KG.Sepsis and septic shock represent a major cause of morbidity and mortality in equine neonates and in all species. Early recognition of the condition is important, but definitive examination and laboratory variables to predict equine neonatal sepsis are lacking. Early and aggressive treatment should include broad-spectrum antimicrobial coverage, source control, and hemodynamic support. Field practitioners and intensive care clinicians work together in the management of this condition because the recognition and initial treatment should begin as early as possible.
Sindbis and Middelburg Old World Alphaviruses Associated with Neurologic Disease in Horses, South Africa.
Emerging infectious diseases    November 20, 2015   Volume 21, Issue 12 2225-2229 doi: 10.3201/eid2112.150132
van Niekerk S, Human S, Williams J, van Wilpe E, Pretorius M, Swanepoel R, Venter M.Old World alphaviruses were identified in 52 of 623 horses with febrile or neurologic disease in South Africa. Five of 8 Sindbis virus infections were mild; 2 of 3 fatal cases involved co-infections. Of 44 Middelburg virus infections, 28 caused neurologic disease; 12 were fatal. Middelburg virus likely has zoonotic potential.
Prevention of post operative complications following surgical treatment of equine colic: Current evidence.
Equine veterinary journal    November 6, 2015   Volume 48, Issue 2 143-151 doi: 10.1111/evj.12517
Salem SE, Proudman CJ, Archer DC.Changes in management of the surgical colic patient over the last 30 years have resulted in considerable improvement in post operative survival rates. However, post operative complications remain common and these impact negatively on horse welfare, probability of survival, return to previous use and the costs of treatment. Multiple studies have investigated risk factors for post operative complications following surgical management of colic and interventions that might be effective in reducing the likelihood of these occurring. The findings from these studies are frequently contradictory and t...
Jump Horse Safety: Reconciling Public Debate and Australian Thoroughbred Jump Racing Data, 2012-2014.
Animals : an open access journal from MDPI    October 22, 2015   Volume 5, Issue 4 1072-1091 doi: 10.3390/ani5040399
Ruse K, Davison A, Bridle K.Thoroughbred jump racing sits in the spotlight of contemporary welfare and ethical debates about horse racing. In Australia, jump racing comprises hurdle and steeplechase races and has ceased in all but two states, Victoria and South Australia. This paper documents the size, geography, composition, and dynamics of Australian jump racing for the 2012, 2013, and 2014 seasons with a focus on debate about risks to horses. We found that the majority of Australian jump racing is regional, based in Victoria, and involves a small group of experienced trainers and jockeys. Australian jump horses are on...
Risk Factors Associated With Survival to Hospital Discharge of 54 Horses With Fractures of the Radius.
Veterinary surgery : VS    October 12, 2015   Volume 44, Issue 8 1036-1041 doi: 10.1111/vsu.12412
Stewart S, Richardson D, Boston R, Schaer TP.To determine (1) survival to discharge of horses with radial fractures (excluding osteochondral fragmentation of the distal aspect of the radius and stress fractures); and (2) risk factors affecting survival to hospital discharge in conservative and surgically managed fractures. Methods: Case series. Methods: Horses (n = 54). Methods: Medical records (1990-June 2012) and radiographs of horses admitted with radial fracture were reviewed. Horses with osteochondral fragmentation of the distal aspect of the radius or stress fractures were excluded. Evaluated risk factors were age, fracture configu...
[Accidents in equestrian sports : Analysis of injury mechanisms and patterns].
Der Unfallchirurg    October 10, 2015   Volume 120, Issue 2 129-138 doi: 10.1007/s00113-015-0074-z
Schröter C, Schulte-Sutum A, Zeckey C, Winkelmann M, Krettek C, Mommsen P.Equestrian sports are one of the most popular forms of sport in Germany, while also being one of the most accident-prone sports. Furthermore, riding accidents are frequently associated with a high degree of severity of injuries and mortality. Nevertheless, there are insufficient data regarding incidences, demographics, mechanisms of accidents, injury severity and patterns and outcome of injured persons in amateur equestrian sports. Accordingly, it was the aim of the present study to retrospectively analyze these aspects. Methods: A total of 503 patients were treated in the emergency room of th...
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