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Topic:Clinical Examination
Clinical examination in horses involves a systematic evaluation of the animal to assess its health status and identify any potential medical issues. This process typically includes a thorough physical assessment, which may cover observation of behavior and posture, palpation of body structures, auscultation of heart and lung sounds, and examination of the skin, eyes, and mucous membranes. Additional diagnostic tools such as thermography, endoscopy, or imaging techniques may be utilized to gather more detailed information. Clinical examination serves as a foundational step in veterinary diagnostics, aiding in the detection and management of diseases or injuries in horses. This page compiles peer-reviewed research studies and scholarly articles that explore methodologies, advancements, and findings related to clinical examination practices in equine medicine.
Factors Associated With Corneal Ulceration in Horses: 420 Cases (2020-2023). To evaluate how environmental and other risk factors are associated with the prevalence of corneal ulceration in horses presenting to equine emergency veterinarians in the Western United States. Methods: Retrospective study conducted from May 2020 to November 2023. Methods: Equine field and hospital practice in the Western United States. Methods: Four hundred twenty horses with corneal ulceration, confirmed by clinical examination and fluorescein staining, of any underlying cause. Methods: None. Results: The primary study outcomes were the association between environmental factors (wind speed,...
Intratracheal Leiomyosarcoma in a 13-Year-Old German Riding Pony Mare. A 13-year-old German Riding Pony mare was referred for evaluation of progressive respiratory noise and mixed dyspnoea, which rapidly deteriorated to respiratory distress. Clinical examination revealed marked rattling inspiratory and expiratory tracheal sounds and severe, rattling, vesicular lung sounds. Arterial blood gas analysis demonstrated moderate hypoxaemia (partial pressure of arterial oxygen 76 mmHg at rest). Upper airway endoscopy identified a pink, cauliflower-like pedunculated mass originating from the dorsal tracheal wall approximately 15 cm cranial to the tracheal bifurcation, cau...
Pelvic axial rotation in hindlimb lame horses changes after diagnostic analgesia. Visual assessment of mild to moderate hindlimb lameness has low sensitivity and specificity, potentially leading to flawed diagnostic procedures. Pelvic axial rotation (roll) makes the assessment more complex but is also a potential source of information. Objective: To describe pelvic roll patterns in horses with unilateral hindlimb lameness before and after diagnostic analgesia. Methods: Retrospective study. Methods: Optical motion capture data from 20 horses with unilateral hindlimb lameness before and after successful local analgesia (assessed visually and objectively) were retrospectively ...
Musculoskeletal examination of the hind limb of the horse. The intention of this tutorial video is to illustrate the methods of examining the hind limb and back of a horse in order to identify abnormalities that may be associated with lameness or disease. Unassigned: An 18-year-old quarter horse stallion was used for examination. Unassigned: The horse was examined for abnormalities using physical examination. Unassigned: The examination of the hind limb and epaxial region of the horse was successfully completed. Unassigned: The techniques described are required to identify abnormalities in the equine hind limb and can be utilized during a lameness exa...
Complications Following Nictitating Membrane Resection in Horses: 92 Eyes (2015-2024). The goal of this retrospective study is to evaluate the complications following nictitating membrane resection in horses with the aim of providing valuable information on the risks of this surgical procedure. Methods: 83 horses (92 eyes). Methods: Medical records for 83 horses that underwent nictitating membrane resection in 92 eyes between February 2015 and June 2024 were reviewed. Horses were included if they had at least 1 month of follow-up data available. Owners were contacted via telephone or email questionnaire to obtain follow-up information. Complications were recorded only when pre...
Evaluation of sequential serum amyloid A measurements for the prediction of sepsis and survival in critically ill neonatal foals. Single measurements of serum amyloid A (SAA) concentration at hospital admission has limited sensitivity for predicting sepsis and death. Objective: To determine whether differences in SAA during the first 2 days of hospitalization could predict sepsis and death in critically ill foals. Methods: One hundred twenty-seven critically ill neonatal foals, <14 days of age. Methods: Prospective cohort study. SAA was measured at hospital admission and on day 2 of hospitalization using a validated point-of-care test. Logistic regression was conducted to evaluate the predictive value of individual S...
Testicular Disorders in Equids: A Case Series. Equine testicular disorders represent a diverse group of conditions that impact the longevity of a stallion's breeding career. Stud farm veterinarians should be familiar with the variety of clinical presentations and diagnostic options for these conditions. This retrospective case series reports 57 cases of testicular abnormalities in stallions and donkeys presented to the clinic for further diagnostics and treatment. These disorders included neoplasia (three unilateral and one bilateral seminoma; two Sertoli cell tumors; two Leydig cell tumors; and one malignant mixed sex cord-stromal tumor),...
Rethinking Equine Cystitis: Evidence from Four Atypical Clinical Presentations. In this case series, four equines were diagnosed with cystitis, resulting in divergent clinical outcomes. Three animals achieved complete clinical resolution without recurrence, whereas one required euthanasia due to progressive clinical deterioration. All diagnoses were established through a dual-modality investigative protocol comprising cystoscopic evaluation and histopathological examination of bladder mucosal biopsies. The cohort exhibited considerable etiological heterogeneity. One case was classified as chronic idiopathic cystitis, while another was attributed to an opportunistic bacter...
Health assessment of Tokara horses on Nakanoshima island: potential chronic hepatic dysfunction induced by Leopard plant (Farfugium japonicum) ingestion. We investigated the health of Tokara horses (n=34) on Nakanoshima as part of conservation efforts for this breed. Although the horses were clinically healthy, elevated white blood cell count, neutrophil count and gamma-glutamyl transferase (GGT) levels were observed, leading to suspicion of chronic hepatic dysfunction and infectious disease. A survey revealed that the caretakers had been feeding the horses Leopard plant, which contains toxic pyrrolizidine alkaloids (PAs). The abnormal GGT levels observed in these horses may suggest the possibility of chronic PA poisoning resulting from the con...
Penile and preputial pythiosis in Saudi Arabian horses: clinicopathological features and surgical outcomes. Pythiosis, caused by , is a chronic granulomatous disease of horses characterized by invasive, ulcerative, and pyogranulomatous cutaneous lesions. Involvement of the external genitalia is uncommon and remains poorly characterized, particularly regarding environmental exposure and treatment outcomes. This study aimed to describe the epidemiological pattern, clinicopathological features, diagnostic findings, and surgical outcomes of penile and preputial genital pythiosis in a hospital-presented horse cohort. Unassigned: A retrospective study was conducted on 123 horses presented with cutaneous u...
Limited Effects of High-Intensity Laser Therapy on Clinical and Radiographic Outcomes in Three-Year-Old Arabian Racehorses with Dorsal Metacarpal Disease. Dorsal metacarpal disease (DMD) is a common musculoskeletal injury in young racehorses, and effective non-invasive treatments remain of clinical interest. This study aimed to evaluate whether high-intensity laser therapy (HILT), which was applied as the sole intervention in horses retired from training, reduces the clinical signs of DMD compared with untreated controls. During the 2023-2024 racing seasons, 15 Arabian racehorses diagnosed with DMD were enrolled; 9 received HILT and 6 served as controls without laser therapy. The treatment protocol consisted of five daily HILT sessions followed ...
Clinical and microbiota alterations in performance horses undergoing long-distance transport. Transport-associated pneumonia contributes substantially to morbidity, impaired welfare, and economic loss in high-performance horses and may be associated with alterations in the respiratory microbiota. Objective: Examine the effect of long-distance transport on the respiratory microbiota and correlate changes in microbiota diversity and composition with systemic and airway inflammation. Methods: Seventeen client-owned performance horses transported from New England to Florida under optimized trailering conditions, and 12 non-traveling horses. Methods: Physical examination, blood testing, nas...
Electrocardiographic recordings of foals using a new smartphone-based digital device. Smartphone-based electrocardiography (ECG) is increasingly explored as a practical tool for cardiac assessment in veterinary species. Objective: The aim of this prospective observational study was to investigate the usability and reliability of a new smartphone-based ECG system (Eko DUO) in healthy foals. Methods: A total of 39 foals, aged 1 to 59 days, were enrolled. ECGs were recorded using the smartphone device in all animals, while a subgroup of 10 foals also underwent simultaneous recording with a conventional base-apex ECG (rECG) to enable direct comparison. All tracings were reviewed bl...
Comparison of Rectal and Intraoperative Findings in Horses with Colic. Per rectum examination (PRE) is commonly used in the triage of horses with acute abdominal pain, despite reports of associated risk factors for both horses and personnel, but its diagnostic accuracy is questionable. This multicenter, observational study aimed to evaluate the agreement between PRE findings and surgical findings obtained via exploratory laparotomy in horses with colic. A total of 201 cases from four equine referral hospitals across Europe were included. Rectal findings were categorized as primary (most likely cause of colic) or additional. Agreement with surgical findings was as...
Diagnostic Ultrasound of the Equine Liver. Ultrasound is readily available to most practitioners and can be used in a straightforward manner to assess the liver. The liver can be assessed for size, shape, echogenicity, and architecture. Findings such as masses, cysts, granulomas, and biliary distention can be relatively specific as to suspected disease process. Other findings may be nonspecific but are useful to confirm concerns and aid in refining differential diagnosis. Findings should be interpreted considering the clinicopathologic picture and sampling performed when appropriate. Ultrasound can and should be used to identify optima...
Validation of an improved insect bite hypersensitivity severity score for allergic equine insect bite hypersensitivity in horses. Insect bite hypersensitivity (IBH) is the most common allergic skin disease in horses, but existing clinical scoring systems lack extensive validation, limiting standardized disease monitoring and therapeutic evaluation. Objective: Develop and validate a standardized, sensitive, and reproducible clinical scoring system for IBH in horses. Methods: Forty-four privately-owned horses with clinically diagnosed IBH examined under field conditions in Switzerland. Methods: In this prospective field validation study, the equine IBH severity score (EqIS) integrates a lesion severity score and an area sc...
An Investigation of the Role of Ridden Exercise, Including Application of the Ridden Horse Pain Ethogram, in Pre-Purchase Examinations of Sports Horses. Many horses undergo a pre-purchase examination (PPE) prior to acquisition by a new owner; however, despite evidence that lameness and canter dysfunction may only be apparent during ridden exercise, ridden exercises assessing gait quality is not a routine part of PPEs. The objectives were to determine the influence of the results of ridden exercise on decision-making concerning risk assessment for purchase and to establish the long-term performance of horses. Twenty-five sports horses underwent PPEs including ridden exercises to assess gait quality and to apply the Ridden Horse Pain Ethogram (R...
Auscultatory findings and left atrial function as indicators of mitral valve regurgitation severity in horses. Mitral valve regurgitation (MR) is frequently detected in horses, but its classification and prognostication remain challenging. This study investigated whether auscultatory findings and left atrial function are associated with MR severity. Methods: Fifty controls (no/trivial MR) and 101 MR horses (58 mild, 36 moderate, seven severe) were retrospectively evaluated. All were in sinus rhythm and underwent auscultation and echocardiography. Mitral regurgitation severity was graded using a scoring system. Systolic murmur characteristics (duration, type and grade) were recorded. Left atrial functio...
Using a wearable electrocardiogram (ECG) patch adapted for 7-day monitoring in the horse. Arrhythmias can cause poor performance and sudden death in horses. Long-term (>24 h) electrocardiogram (ECG) monitoring has been used to identify arrhythmias in humans and is superior to short-term monitoring for transient arrhythmia detection. Televet is the current equine gold-standard ECG device. The Cardea SOLO™ (CS) is a single-use monitor with automated ECG analysis software allowing ECG monitoring for 7 days. Objective: Our objective was to validate the performance of the CS compared to the Televet. Methods: Method validation. Methods: ECGs were performed on 12 healthy horses s...
A point-based laminitis risk scoring system and machine learning framework for prediction of laminitis in horses. Laminitis is a painful and potentially life-threatening inflammatory condition of the equine hoof, and its detection remains a major challenge in veterinary practice. Although several risk factors have been reported, the prediction of the onset of laminitis in a subclinical stage using routine clinical data is still limited. This study aims to address this gap by developing an interpretable machine learning (ML) framework for the prediction of the risk of laminitis in horses. A point-based risk scoring system was first constructed using multivariate logistic regression to quantify the contribu...
Improving Inclusivity in the Curriculum via the Introduction of an Equine Industry-Specific Language eGlossary. The equine veterinary profession is frequently considered inaccessible to veterinary students who have had limited exposure to the equine industry. One of the perceived reasons for this inaccessibility is the use of what is often coined "horsey" language within the industry. If a student has limited experience of the equine industry, there is a potential language barrier to teaching, which may result in poor engagement with equine teaching and placements. The aim of this Teaching Tip is to describe the development and evaluation of a new teaching resource designed to demystify equine industry-...
Umbilical vein marsupialization in foals-short literature review. Umbilical remnant infections are common in neonatal foals and may involve one or more umbilical structures. Diagnosis relies on thorough clinical examination, ultrasonography, and hematologic evaluation. Standard care includes broad-spectrum antibiotics, with surgical resection if conservative therapy fails. Omphalophlebitis may extend to the liver, prompting consideration of umbilical vein marsupialization. Surgery is performed in dorsal recumbency with a fusiform incision around the umbilicus. The umbilical arteries and urachus are ligated and transected, with partial cystectomy when indicat...
Diagnostic criteria for equine thoracolumbar myofascial pain syndrome: A foundational study. Diagnostic criteria for myofascial pain syndrome (MPS) are well established in humans but remain underexplored in horses. This study aimed to identify which MPS clinical signs were present in the equine thoracolumbar region, assess internal coherence among clinical indicators, and explore the diagnostic relevance of owner-reported behavioural, signalment, management, and clinical variables. A population of 120 horses underwent a static physical assessment of the thoracolumbar region. Owner-reported horse behaviours were collected through a questionnaire. Taut band, hypersensitive spot, local t...
Synovial transcriptomic biomarkers predict structural severity in equine osteochondral fragment-induced experimental osteoarthritis. Develop a global joint score (GJS) reflecting equine osteoarthritis (OA) structural severity and identify clinical or molecular parameters predicting disease severity. Unassigned: A retrospective analysis was performed using data from horses (n = 104; 58 females and 46 geldings; 2 to 5 years old) undergoing experimental OA induction via surgical osteochondral fragment creation in the middle carpal joint and high-speed treadmill exercise over 70 days. Longitudinal measures included subjective lameness examinations (lameness, effusion, and flexion), synovial fluid (SF) and serum glycosaminoglyca...
Comparison of palpation and ultrasonography findings in supraspinous ligaments of horses. The purpose of this study was to evaluate the utility of palpation as a diagnostic tool for supraspinous ligament injuries in horses. Diagnosis of SSL injuries typically relies on a combination of clinical examination and ultrasonographic findings. To the authors' knowledge, no previous studies have specifically investigated palpation as a diagnostic measure for these injuries. Unassigned: This retrospective study analyzed data from 126 horses resented to the University Veterinary Teaching Hospital for back pathology. Inclusion criteria required horses to have a documented descriptive palpator...
Similar locomotor patterns across Quarter Horse disciplines inform lameness assessment. Lineage-based selection is central to the Quarter Horse industry and is often justified by the assumption that morphology determines locomotor function. However, objective evidence linking static conformation to discipline-specific locomotor behaviour under standardised conditions remains limited. Objective: To investigate whether morphological differences among Quarter Horse disciplines are associated with distinct locomotor patterns or whether locomotor function converges across disciplines despite morphological variation. Methods: Cross-sectional. Methods: Barrel racing, reining, and ranch ...
A multimodal approach to equine thoracolumbar myofascial pain: integrating clinical examination, AI-based gait analysis, and the ridden horse pain ethogram. Myofascial pain syndrome (MPS) is considered highly prevalent in horses, yet it is frequently underdiagnosed due to limited understanding of its clinical presentation and functional consequences, as well as the inherent challenges associated with its clinical assessment and objective measurement. In equines, the relationship between palpation-based MPS indicators, gait asymmetries, and pain-related behaviours during ridden work remains unclear. The primary aim of this study was to evaluate the association between thoracolumbar palpation pain scores and gait asymmetries measured in-hand and dur...
Imaging of the Equine Abdomen Using Point of Care Ultrasound (POCUS)-A Resource for the Equine Practitioner. Wireless ultrasound (US) probes for point of care (POC) evaluation of horses presented for veterinary evaluation of colic have become widely available in recent years. The availability and performance of this technology mean POCUS is readily available to the equine practitioner and the technology is well suited to patient evaluation or serial monitoring in first opinion practice. In human health care and veterinary contexts, it has been suggested that there is a need for practitioners to better appreciate the value of POCUS for assessment of gastrointestinal structure and function. This study ...
Evaluation of systemic inflammatory response syndrome criteria in horses with colic associated with acute gastrointestinal disease. Systemic inflammatory response syndrome (SIRS) is a severe clinical condition commonly observed in horses with acute gastrointestinal disease associated with colic and is linked to increased risk of organ dysfunction and mortality. Early identification of SIRS and reliable prognostic indicators are essential to improve clinical management. This study aimed to assess the occurrence of SIRS in adult horses with colic, evaluate its association with outcome, and investigate the prognostic value of selected clinicopathological variables. Unassigned: A total of 41 adult horses admitted for acute gas...
Biliary Disorders in Horses. This review will mainly focus on the presentation, diagnosis, and treatment of cholangiohepatitis in adult horses. The condition is often accompanied by some degree of intrahepatic and/or extrahepatic biliary obstruction with "sludgy" bile or actual choleliths. In horses, these calculi are typically composed of calcium bilirubinate, rather than cholesterol. There is a propensity for cholangiohepatitis to become a recurrent, chronic condition and patient management should reflect this. Although much rarer, foreign body obstruction, neoplasia and, in some parts of the world, liver flukes can als...
