Читать книгу Manual of Equine Anesthesia and Analgesia - Группа авторов - Страница 261

 Is a common occurrence, especially following a prolonged period of anesthesia with the horse in dorsal recumbency.

 Edema develops because of the increased hydrostatic pressure in the nasal mucosa in dorsal recumbency.

 Passage of a nasal or nasotracheal tube is usually effective in the treatment of nasal obstruction.A 14–16 mm tube will suffice for an adult, and should be left in place for recovery.Routine use of a nasal tube or orotracheal tube in recovery is recommended following long surgeries, especially if the horse has been in dorsal recumbency.

 Phenylephrine instillation, to constrict nasal mucosa, can be used to reduce edema.Phenylephrine can be squirted into the nasal passages via the ventral meatus by elevating the nose and allowing contact with the nasal mucosa.5 ml of 0.15% phenylephrine (adult, full‐sized horse) into each nostril, about 30 minutes before extubation, will reduce nasal edema.The dose should be reduced proportionally in foals and smaller horses to prevent extreme arterial hypertension.