Читать книгу Manual of Equine Anesthesia and Analgesia - Группа авторов - Страница 268

 To bypass an obstruction of airflow proximal to the site of tracheostomy. The horse is an obligate nasal breather, so severe obstruction of the nasal cavity necessitates creating a tracheostomy.

 To provide access to the trachea for administering an inhalant anesthetic and oxygen, so that surgery of the larynx or pharynx (e.g. resection of the nasal septum, arytenoidectomy, repair of a cleft palate) can proceed unimpeded by the presence of an ET tube.