The Horse

DEC 2018

The Horse:Your Guide To Equine Health Care provides monthly equine health care information to horse owners, breeders, veterinarians, barn/farm managers, trainer/riding instructors, and others involved in the hands-on care of the horse.

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18 December 2018 The Horse | bleeding source—could be dealing with an ethmoid hematoma. This benign frag- ile vascular mass (made up of blood ves- sels) can grow into the nasal passages or the paranasal sinuses from the ethmoid, which is a normal vascular structure at the top of the paranasal sinuses. They resemble cancerous tumors. The resulting bloody discharge is usually low-grade, intermittent, spontaneous, and unilateral, and sometimes fetid. "Owners might also notice a noise that's associated with it if it's big enough that air flow is obstructed," says Lascola. "And then you might see facial swelling or even headshaking in some horses." Treatment usually involves injecting the chemical formalin, which reduces the size of the lesion, or surgical removal, but recurrence is common. Scenario 5: The horse has a cream- like discharge from one nostril. Considered less severe then our third scenario, a creamy discharge from one nostril could result from a bacterial infec- tion of the guttural pouch called guttural pouch empyema. In this condition in- flammation and pus build in the pouches. Horses also might have a fever or seem depressed. It could also develop second- ary to strangles, which would probably already be evident to the owner. Scenario 6: The horse has lots of foamy and chunky nasal discharge from both nostrils. Mazan says profound nasal discharge like this could result from an esopha- geal obstruction, also called choke. The chunky bits dripping from the nostrils could be food coming back up. In horses with choke, food typically blocks the esophagus, although it can less commonly block the windpipe. Af- fected horses might cough and drool, as well. While a horse can still breathe with a blocked esophagus, a veterinar- ian must resolve the issue to prevent complications. For more on choke, visit Rarely, in severe colics horse owners might see a foamy discharge with chunks of food as reflux. However, this is usually accompanied by abdominal discomfort and distention. Take-Home Message These scenarios illustrate the wide range of causes and types of snotty noses. It's important to recognize that any nasal drainage can be an important indicator of a horse's health and can even herald an emergency; pay close attention to the signs, and be prepared to relay them to your veterinarian. h THE NOSE KNOWS Infection Control If a horse with a snotty nose seems sick, Kara Lascola, DVM, MS, Dipl. ACVIM-LA, CVA, associate professor of equine internal medicine at Auburn University's College of Veterinary Medicine, in Alabama, suggests isolating him; minimizing the number of people that care for him; and requiring all caretakers to wear gloves. This helps reduce disease spread. Also recognize that a horse might be infected, contagious, and not yet showing clincial signs of disease. For this reason, quarantine and other biosecurity measures can help prevent disease spread, especially if horses are moving on and off the farm. "Separate those groups so a new horse coming in is kept in a separate area for a couple weeks," says Lascola. "Just make sure nothing pops up in that first couple of weeks with that horse before it's introduced to the rest of the community." She also suggests keeping show horses in separate groups from resident horses. "Horses that are young and travel and mingle with horses a lot are more likely to get a viral disease," says Melissa Mazan, DVM, Dipl. ACVIM, professor of internal medicine, equine respiratory system, and lung function at Tufts University's Cummings School of Veterinary Medicine, in North Grafton, Massachusetts. This is where biosecurity measures ( are particularly important.—Sarah Evers Conrad £Ê-Ì>Êi`ÀâiÀ]ÊÎ{Ê9i>ÀÃÊEÊ ÕÌ}° *ÀiÛiÌÊ>>ÊvÀÊLÕ`}ÊÕ«ÊÊÞÕÀÊÃÌ>ÃÊ >`Ê>Û`ÊVÃÌÞÊÀiëÀ>ÌÀÞÊ>iÌðÊ-«ÞÊ >««ÞÊ>ÊÌÌiÊ-ÜiiÌÊ*<Ê`>ÞÊ>`ÊiÞÊÌiÊ ÃÜiiÌÊÃiÊvÊ>>Ê«ÀiÛiÌ° ÀÊÀiÊvÀ>ÌÊÀÊ>Ê`i>iÀÊi>ÀÊÞÕ\ ÜÜÜ°ÃÜiiÌ«`â°VÊUÊnääÎÈÇ£xÎ{ "IIUIF4XFFU4NFMMPG*ÀiÛiÌ

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