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Topic:Equine Medicine
Equine Medicine encompasses the study and application of medical practices specifically related to the health and well-being of horses. This field involves the diagnosis, treatment, and prevention of diseases and disorders affecting equine species. It covers a wide range of topics, including internal medicine, surgery, reproduction, and pharmacology. Research in equine medicine often focuses on understanding the physiological and pathological processes unique to horses, as well as developing effective therapeutic interventions. This page aggregates peer-reviewed research studies and scholarly articles that explore various aspects of equine medicine, providing insights into the latest advancements and methodologies in the care and management of horse health.
Cervical epidural catheter for administration of detomidine and morphine in a model of carpal synovitis in the horse. To determine the analgesic effects of detomidine and morphine administered by cervical epidural catheter (CEC) on a model of thoracic limb pain. Methods: Prospective, randomized, blinded crossover study. Methods: Five adult horses. Methods: Cervical epidural catheters were placed under ultrasound guidance, followed by induction of lipopolysaccharide (LPS)-mediated carpal synovitis. Horses received either saline or detomidine/morphine (DM; 10 μg/kg, 0.1 mg/kg, respectively) via CEC 4 h after synovitis. After a 7 day washout, synovitis was induced in the contralateral carpus, and the alternate ...
Ex vivo biomechanical testing of a three-dimensional printed titanium plate and spacer construct and 4.5 mm locking compression plate for ventral cervical fusion of C4-C5 in the horse. To compare the biomechanical properties of a three-dimensional (3D) printed titanium plate and spacer (3DM) and a 4.5 mm broad locking compression plate (LCP) for intervertebral fusion of C4-C5 in the horse. Methods: Ex vivo experimental study. Methods: Twenty-four equine cadaveric cervical spines. Methods: Twenty-four cadaver equine cervical spines were randomly assigned to ventral intervertebral fusion with either 3DM (n = 12) or LCP (n = 12) at C4-C5. Four-point bending tests were performed in flexion (3DM n = 6, LCP n = 6) and extension (3DM n = 6, LCP n = 6) in a sin...
Extraskeletal chondroma of the tongue in a two-year-old quarter horse colt: a case report. Extraskeletal chondromas (ESCs) are rare benign tumours composed of mature cartilage that typically develop in soft tissues. Their occurrence in horses is extremely uncommon and, to the authors' knowledge, no previous cases of lingual ESCs in equines have been reported. This report describes a two-year-old Quarter Horse colt presented with progressive dysphagia. Clinical examination revealed a solitary, multilobulated, firm-elastic mass located at the dorsal aboral portion (base) of the tongue. Diagnostic imaging ruled out bone involvement. The mass was surgically excised under general anaesth...
Real-time fluorometric isothermal assays for detection of Streptococcus equi subspecies equi and Streptococcus equi subspecies zooepidemicus in horses: Validation, comparison and evaluation of their clinical application. Infectious diseases significantly impact equine health and welfare, causing illness and death, and loss of productivity globally. One such disease is 'strangles', a highly contagious upper respiratory condition in horses caused by Streptococcus equi subspecies equi (SEE). Diagnostic methods for this pathogen include sensitive molecular assays and less reliable bacterial isolation and biochemical testing. However, the presence of closely related streptococci, such as Streptococcus equi subspecies zooepidemicus (SZOO), may confound diagnosis. Rapid assays for SEE are crucial for outbreak control...
Use of Artificial Intelligence to Detect Cardiac Rhythm Disturbances in Athletes: A Scoping Review. Artificial intelligence (AI) is increasingly used to enhance electrocardiogram (ECG) interpretation in human medicine. In equine athletes, exercise-associated arrhythmias are common and linked to sudden cardiac death at rates higher than in humans. However, ECG interpretation in horses remains time-consuming and subjective, with the clinical relevance of mild rhythm disturbances often unclear. Objective: Evaluate the application of AI to ECG interpretation for arrhythmia detection, with emphasis on current and potential use in athletic species, particularly horses. Methods: About 17 studies we...
Agreement between subjective evaluations and a markerless AI-based gait analysis system during lungeing assessment in traditional racehorses. Subjective lameness evaluation during lungeing is routinely performed in equine practice, but its consistency remains limited, especially in cases of mild or complex asymmetry. Objective: This study aimed to assess the agreement between subjective gait evaluations and a markerless AI-based gait analysis system (OAI-MS) in traditional racehorses during lungeing. Intra- and inter-observer agreement of subjective evaluations was also investigated. Methods: 24 traditional racehorses were assessed during routine pre-race inspections (T0) while trotting on a soft surface. Two experienced equine clin...
Ultrasonographic Assessment of Caudal Vena Cava Collapsibility Index, Caudal Vena Cava-to-Aorta, and Femoral Vein-to-Artery Ratios in Healthy Sedated Adult Horses. (1) Background: Ultrasonography of major vessels helps evaluate fluid status and responsiveness in critical human and canine patients. Aims: transrectal and inguinal ultrasonography of caudal vena cava (CVC), aorta (Ao), and femoral artery (FA) and vein (FV) in horses; calculate CVC collapsibility index (CI CVC) and vein-to-artery ratios; compare B- and M-mode; and evaluate repeatability and reproducibility. (2) Methods: B-mode and M-mode video loops were recorded twice by transrectal (Ao, CVC) and inguinal ultrasonography (FV, FA) by two operators on 17 healthy, sedated adult horses. Diameter...
Accidents, Injuries, and Complications in Equine Sports Medicine Practice. The physical stresses on equine athletes are unique and differ across various disciplines. Recognizing these differences is essential for early detection of injuries and effective management of the competition horse's health. Equine sports medicine involves specific challenges and risks that can be reduced through proper care, careful attention to technique, and a deep understanding of the demands of each sport. Proper training, regular monitoring, and sport-specific expertise are crucial in preventing injuries and ensuring optimal performance. By focusing on these aspects, veterinarians and t...
Complications in the Critically Ill Equine Patient. Complications in critically ill equine patients are often related to the underlying disease process but can also be a consequence of diagnostic and therapeutic interventions. Complications can be specific to the affected organ or body system; however, in critically ill patients, they frequently affect the vasculature, acid-base, electrolyte, and fluid balance, energy homeostasis, and coagulation, with systemic consequences. Infrequent monitoring, late detection, failure to adapt therapies, hematologic and biochemical abnormalities, coagulopathies, and systemic inflammation can all contribute t...
Complications in Equine Anesthesia. General anesthesia in equine patients is associated with a higher risk of mortality despite improved monitoring equipments and anesthetic techniques most likely due to their large body size, unique physiology and anatomy, behavioral tendencies, and therefore the challenging recovery. Larger body mass, increased age, higher American Society of Anesthesiologists (ASA) status, out-of-hours surgery, and longer duration of anesthesia have been identified as contributing factors increasing the risk of perioperative mortality in equine patients. Especially the recovery period remains a critical time ...
Complications of Respiratory Surgery in the Horse. Respiratory surgery and procedures typically focus on conditions of the upper airway that restrict airflow at rest or exercise. This article focuses on respiratory anatomy and common surgeries of the trachea and larynx in horses. The trachea serves as the airway conduit from the larynx to the bronchi. A variety of upper airway disorders can lead to obstruction and in these instances, tracheotomy is typically utilized to bypass these obstructions and maintain airway patency. Emergency and permanent tracheotomy procedures are discussed. Other common upper airway operations, such as laryngotomy, ...
Assessment of the antiparasitic effectiveness of pyrantel pamoate in treatment of Strongylidae invasions in young horses – preliminary studies. The resistance of strongyles to pyrantel pamoate has been reported in publications worldwide. There is no data on its efficacy in horses in Poland. Therefore, the aim of this study was to evaluate the effectiveness of pyrantel pamoate to control strongyle invasions in young horses. The study involved horses of both sexes, aged 1 to 2 years, and was conducted in two seasons (spring and the end of summer). Feces were collected 24 hours before and 14 days after deworming, and they were then examined using McMaster's and combined sedimentation-flotation methods. Results revealed that in spring, th...
Equine Abdominal Surgery: Predicting and Preventing Postoperative Complications. Morbidity after equine abdominal surgery is common and post-operative complications can be costly to owners. The focus of this article is on intraoperative decision-making and current evidence, including surgical techniques and prognostic information that can prevent and predict complications. Emerging techniques for intra-operative monitoring and intestinal viability assessment, anastomotic techniques, body wall suturing, peritonitis treatment, and pain management are discussed.
Radiographic Evaluation of Equine Odontoclastic Tooth Resorption and Hypercementosis (EOTRH) in Horses Living Under Natural Conditions in Iceland. Outside of Iceland, the Icelandic horse is prone to the development of Equine Odontoclastic Tooth Resorption and Hypercementosis (EOTRH). The aim of this study was to determine the radiographic prevalence and clinical signs of EOTRH in elderly horses (≥15 years) in Iceland. The rostral oral cavity of 170 horses (aged 15-30 years) was examined clinically. In addition, husbandry and nutritional management history was recorded by use of a questionnaire. Radiographs (2-4 views) of 188 horses were evaluated, findings were categorized by numerical staging of the condition and collated with clinica...
Preliminary clinical study of the arytenoid cartilage abduction grades after prosthetic laryngoplasty with cricoarytenoideus dorsalis myectomy in racehorses. To assess the clinical impact of the cricoarytenoideus dorsalis (CAD) myectomy in the short- and long-term postoperative abduction grade in racehorses. Unassigned: Records from horses presented for surgical treatment of recurrent laryngeal neuropathy from January 2019 through December 2023 were divided into 2 groups: horses that received standard prosthetic laryngoplasty and horses that received a complete myectomy of the CAD (modified myectomy laryngoplasty). Outcomes were compared through endoscopic evaluation after anesthetic recovery, both short term (7 to 10 days) and long term (80 to 90 ...
Adverse Effects and Drug Reactions in Equids. Adverse drug events (ADEs) are any harms caused by medical interventions used for treatment, prevention, or diagnosis. These events can happen due to human error or as unintended, harmful reactions to drugs when given at normal therapeutic doses. This review focuses on common ADEs associated with drugs frequently used in equine practice. Recognizing and understanding the manifestations of ADEs can help with early detection and more effective management, ultimately leading to better outcomes for equine patients. Additionally, knowledge of the potential harmful effects of drugs also aids in appr...
Comparing Genomic and Pedigree Inbreeding Coefficients in the Slovenian Lipizzan Horse as a Case Study for Small Closed Populations. In small, closed populations such as the Lipizzan horse, maintaining genetic diversity while limiting inbreeding is a key challenge in conservation breeding. The Lipizzan is an indigenous Slovenian breed with a small population and restricted gene flow from other subpopulations. Inbreeding is traditionally monitored with pedigree-based coefficients, but these often underestimate realised autozygosity, particularly when pedigree depth is limited. This study compared pedigree-based inbreeding (F_PED) with four genomic estimators (F_HOM, F_ROH, F_HBD, F_GRM) in 329 Slovenian Lipizzan horses genot...
Behavioral and orthopedic issues in geldings with Postcastration adhesions: A retrospective study of 35 cases. Limited data is available on the diagnostic and therapeutic methods for pathologies caused by scarring after castration. It is well recognized that specific behaviors or untypical hindlimb lameness may be observed in geldings with gelding scars and adhesions caused by spermatic cord remnants after castration OBJECTIVES: To describe how to diagnose movement disorders associated with excessive adhesions caused by spermatic cord remnant after castration and to present a successful surgical treatment method. Methods: To assess the impact of gelding scars on horses' movement and behavior, medical r...
Retrospective Assessment of Carbonic Anhydrase Inhibitors in Topical or Episcleral Implant Form for the Treatment of Equine Glaucoma. To assess whether topical carbonic anhydrase inhibitors (CAIs) with or without episcleral brinzolamide implants control intraocular pressure (IOP) in horses with glaucoma. Methods: 12 client-owned horses diagnosed with glaucoma. Methods: Medical records of horses treated with topical CAIs for ≥ 14 days, with a subset receiving episcleral brinzolamide implants, were reviewed. Diagnosis, signalment, concurrent ocular disease, medications, IOP, visual status, and additional procedures were recorded. Treatment failure was defined as horses with IOP > 30 mmHg resulting in phthisis bulbi o...
Helminth control practices used by equine keepers in France: a national survey. In light of the increasing reports of anthelmintic (AH) resistance in equids, a national survey on helminth control practices was distributed to 42 528 keepers. A total of 4 344 responses was obtained. Respondents implemented preventive pasture practices with varying frequency according to the age of the animals, such as pasture rotations (78.1-80.6 %), excrement removal from pastures several times a year (15.9-27.2 %) and/or mixed or rotational grazing with ruminants (14.5-18.1 %). A majority of keepers routinely used AH treatments even though they did not perceive any major risk to the...
Computer-Aided Diagnosis of Equine Pharyngeal Lymphoid Hyperplasia Using the Object Detection-Based Processing Technique of Digital Endoscopic Images. In human medicine, computer-aided diagnosis (CAD) is increasingly employed for screening, identifying, and monitoring early endoscopic signs of various diseases. However, its potential-despite proven benefits in human healthcare-remains largely underexplored in equine veterinary medicine. This study aimed to quantify endoscopic signs of pharyngeal lymphoid hyperplasia (PLH) as digital data and to assess their effectiveness in CAD of PLH in comparison and in combination with clinical data reflecting respiratory tract disease. Endoscopic images of the pharynx were collected from 70 horses clinic...
Antibiotic Use in Horses: Analysis of 57 German Veterinary Practices (2018-2023). : A mandatory monitoring of the use of antibiotics in horses in the European Union will come into force from 2027 on. The aim of the study was to explore the potential implementation of a monitoring system and to provide an overview of antibiotic use in horses in Germany. : Data on all consultations from 57 German practices between 2018 and 2023 were obtained. The dataset included basic data about the horse, free-text diagnoses (allocated to one of 20 categories), and treatments. Information on the administered or dispensed pharmaceutical product was recorded for antibiotic treatment consultat...
Multiple Catheter Recording in Horses to Investigate Atrial Depolarization Pattern During Sinus Rhythm and Induced Premature Atrial Complexes. Detailed characterization of arrhythmias can be performed by multiple catheter mapping; but this has not yet been explored in horses. Objective: Perform ultrasound-guided multiple catheter mapping of the right heart during sinus rhythm and right and left atrial pacing to identify activation patterns characteristic of the origin of ectopy. Obtain His signals and effective refractory periods (ERP). Methods: Eight healthy adult horses. Methods: Experimental study. Recording catheters were placed at the terminal crest, intervenous tubercle, caudal vena cava, and coronary sinus. Right atrial pacing...
Identification of Candidate Biomarkers Detected in the Urine of Racehorses After Anabolic Agent Administration: Use of Orthogonal Methods for Structural Elucidation. Biomarker identification by mass spectrometry represents a key step in the workflow of nontargeted metabolomic studies. Given the complexity of the data, this step, which must be carried out by a trained specialist, is time-consuming, and the biomarkers discovered are not always identified. While this stage is not an obstacle to the development of new screening and classification tools, it is nonetheless crucial to a better understanding of the results obtained. For this reason, the aim of this study was to perform structural elucidation of candidate biomarkers, which had previously been displ...
Isolation and Characterization of Equine Lymph Node Endothelial Cells. In vitro models have revolutionized our understanding of biological pathways and mechanisms, offering a viable alternative to direct patient testing. However, there is a significant lack of models for different animals, particularly equine models. This study presents a novel primary cell culture extracted from a 3-year-old horse diagnosed with multisystemic eosinophilic epitheliotropic disease. Tissue samples were collected from lymph nodes at various locations. Growth curves of extracted primary cells were analyzed and the optimal conditions were assessed. Biomarkers, such as CD31, ZO-1, CD79...
Evaluation of a modified one-stage technique for repair of third-degree perineal laceration and rectovestibular fistula with rectal pull-back technique in 12 mares: a retrospective case series. This study was carried out to evaluate a rectal pull-back one-stage technique, which is a modification of the one-stage Goetz technique, for treating third-degree perineal laceration or rectovestibular fistula. Methods: This study was performed on 12 mares, ten of whom suffered from third-grade perineal laceration, and two suffered from rectovestibular fistula and were included in this study. After incision of the vestibular shelf horizontally, the dissected rectal flap was pulled caudally and sutured to the anal sphincter during its reconstruction at the final stage. While the vestibular shel...
Evaluation of maturation-related changes in maxillary sinus diameter and cheek teeth positioning relative to the maxillary sinus in the Dareshuri horse. Dareshuri horses are the predominant breed in Fars Province, Iran. Although disorders affecting their maxillary cheek teeth and maxillary sinuses are relatively common, limited fundamental data are available on the dimensions and relationships of these structures at different ages. Given the significant anatomical changes in the heads of young horses as they mature, this study aimed to evaluate age-related changes in the position and anatomical relationships of individual maxillary cheek teeth within the rostral and caudal maxillary sinuses (RMS and CMS, respectively), as well as changes in th...
Misconceptions and misuse: assessing horse caregivers’ knowledge, attitudes, and practices regarding dexamethasone use in Ibadan, Nigeria. Dexamethasone is a common drug used in equine medicine, but when administered inappropriately, it can lead to serious health complications. There is a dearth of data on horse caregivers' knowledge, attitudes, and practices regarding dexamethasone use in Nigeria. Understanding current dexamethasone usage patterns is necessary for developing educational interventions which will then improve equine welfare. This study aimed to assess the knowledge, attitudes, and practices (KAP) of horse caregivers regarding dexamethasone use in Ibadan, Nigeria. A cross-sectional study was conducted amongst a tot...
Owners’ everyday interactions with their horse: Pain-related issues and those of veterinary concern. The decisions made by horse owners on behalf of their animal, including decisions to involve a veterinarian, play an important role in the management of pain. This study explored horse owners' experiences to understand how they conceptualised chronic pain within the context of their horse-human relationship, what led them to seek veterinary involvement, and how veterinary interactions shaped their perceptions of pain and its management. An ethnographic approach using constructivist grounded theory methods was adopted. This paper draws upon field notes generated through 200 h of observation und...
Tenoscopically guided proximal digital annular ligament desmotomy for the treatment of proximal digital annular ligament desmitis. To describe a tenoscopically guided technique for desmotomy of the proximal digital annular ligament (PDAL). Methods: Ex vivo study and clinical case series. Methods: A total of 10 normal cadaver equine hindlimbs and five clinical cases of PDAL desmitis. Methods: The digital flexor tendon sheath (DFTS) was approached via a lateral basisesamoid portal and a palmar/plantar annular ligament (PAL) desmotomy was performed to improve maneuverability in the DFTS. Additional proximolateral and distal midline instrument portals were created to facilitate transection of the proximolateral attachment, th...
