2023年2月16日 · Horses with an upper airway bacterial infection can develop primary sinusitis when the bacteria invade the sinus, inflaming the mucosa and impairing mucociliary function. This makes sinus drainage difficult, and leads to an accumulation of mucus and bacteria in the sinus, becoming the perfect environment for bacterial proliferation.

The sinuses are air-filled cavities within the head of the horse. The sinuses also accommodate some of the maxillary premolar and molar tooth roots (upper cheek teeth), facilitate passage of facial nerves, and extend around (above and below) …

The paranasal sinus system of the horse consists of paired frontal, conchal (dorsal and ventral compartments), sphenopalatine, and maxillary (rostral and caudal compartments) sinus compartments.

2018年2月20日 · Sinuses are air-filled cavities located on either side of the horse’s head, above, below and between the eyes. They extend down the face to the lower end of the cheekbones. Often referred to as paranasal sinuses because they are near the nose, sinuses have a smooth interior lining and are covered by a thin layer of bone.

2022年8月24日 · Equine sinusitis is the most common disease affecting the paranasal sinuses in horses. Sinusitis is an inflammatory condition that often involves excessive nasal discharge. Horses with sinus diseases can also experience swelling in the face or reduced appetite.

Swelling on one side of the face, excessive tears from one eye, and noise when the horse inhales are common signs of disorders of the sinuses. Using an endoscope, the veterinarian can observe pus-containing material, a mass, or blood in the nasal passage originating from higher up …

2010年8月1日 · There are 6 paired sinuses (frontal, maxillary, dorsal conchal, ventral conchal, middle conchal, and sphenopalatine) and all of these spaces communicate with each other and the nasal passage either directly or indirectly. The equine paranasal sinuses (PNS) are an intricate area of the head.

2023年5月5日 · Equine sinusitis is the most common disease affecting the paranasal sinuses in horses. It is an inflammatory condition involving excessive nasal discharge, often caused by another infection within the upper respiratory tract or a tooth root infection. The condition can be primary or secondary, chronic or acute.

Additionally, an upper respiratory virus can predispose a horse to developing a primary sinusitis infection. Clinical signs include mucoid (white, green, or yellow) nasal discharge out of one or both nostrils, swelling or bulging of the facial bones, decreased appetite, lethargy and/or weight loss.

Equine paranasal sinusitis is an infection of the horse's perinasal sinus cavities. Horses have 7 bilaterally paired sinuses that all drain into the nasal cavity through an opening into the nasal passage.