Scientific Snapshots

Increase your knowledge with this eclectic collection of science-focused snippets, articles, video summaries and papers aimed at keeping you in the picture!

1:30 min
Little is known about thyroid diseases in ruminants, probably due to the lack of diagnosis techniques developed in this species. However, thyroid ultrasound (TU) is widely used in human and in companion animal's medicine. It is a cheap and non-invasive examination, which allows for the identification of thyroid structures or diffuse diseases. The aim of this study was to evaluate the accuracy of TU in five calves and five cows through inter- and intra-observer repeatability. The size of the...
1:00 min
Administration of supplemental oxygen may be necessary for horses experiencing significant hypoxemia (PaO2 <80 mm Hg) associated with respiratory disease. Providing effective oxygen supplementation to the standing adult horse can be challenging, with described methods for delivery including oxygen mask, intratracheal catheterization, and nasal cannula. This study evaluated the effects of various flow rates and fractions of oxygen on arterial blood gas parameters and on the fraction of...
01:00 min
In the present review, the authors, based on the multiple functions performed by the liver, analyze the multiple biochemical and hematological changes as an expression of altered liver function in the horse. The liver performs important metabolic functions related to the synthesis, degradation, and excretion of various substances. Modification of these functions can be evaluated and diagnosed by determining serum concentrations of several serum analytes, including enzymes and other endogenous...
2:30 min
Pheochromocytomas have been previously reported in horses, but successful antemortem diagnosis and surgical removal without recurrence of clinical signs has not been described. The aim of this study was to report the clinical presentation, diagnostic evaluation, surgical technique, anesthetic management, and post-operative care of a mare diagnosed with pheochromocytoma. This clinical case report describes an 18-year-old Quarter Horse mare presented for recurrent episodes of colic, profuse...
5:00 min
Content prepared by Jennifer Jobin, BSc, DVM
Horses can suffer from a variety of conditions that can lead to chronic pain, such as arthritis and laminitis. While commonly used nonsteroidal anti-inflammatory drugs (NSAIDS) such as phenylbutazone and flunixin meglumine are effective at controlling pain, they are nonselective COX inhibitors. Firocoxib is one of many selective COX-2 inhibitors introduced in the veterinary market, and the only one labelled for oral use in horses in Canada. While an equine-labelled product has only recently...
04:30 min
Content prepared by Jennifer Jobin, BSc, DVM
Emerging antimicrobial resistance among both human and animal populations has been a concern for some time. While the use of antimicrobials is regulated in certain animal populations in the US, their use in horses is not. Antimicrobial use is of interest because it creates selection pressure for antimicrobial resistance. Because of the large equine population, frequent travel of those equines and close contact between equine athletes, staff and spectators at racetracks, there is a possibility...
04:00 min
Content prepared by Jennifer Jobin, BSc, DVM
While gabapentin in often used in humans and small animals, there has been limited information about the safety and efficacy of dosing gabapentin in horses. So far, most of our information about the use of gabapentin is drawn from extrapolations based on its use in other species including dogs, cats and humans. The analgesic dose of gabapentin is still not known in horses. A recent study (Gold et al., 2022) compared the effects of treating equines with 40 mg/kg or 120 mg/kg of gabapentin...
4:30 min
Content prepared by Jennifer Jobin, BSc, DVM
The equine navicular apparatus as a premier enthesis organ: Functional implications The diagnosis of navicular syndrome (sometimes called caudal foot pain, palmar foot pain, podotrochlosis) is often dreaded by riders, trainers and veterinarians. Lameness attributable to the caudal region of the foot, sensitivity over the navicular regions and radiographic changes in the bone are part of the clinical portrait of the disease. While the ability to precisely diagnose specific lesions in each...
03:30 min
Content prepared by Jennifer Jobin, BSc, DVM
Hypotension is a frequent challenge in equine general anesthesia and is associated with a variety of post-anesthetic complications, including myopathy. Hypotension under general anesthesia often develops secondary to the effects of inhaled volatile anesthetic agents. Efforts at countering hypotension under anesthesia have focused on decreasing the amounts of inhaled anesthetics, administering IV fluids and using vasopressors or ionotropic medications. Hypotension can also be encountered in...