Читать книгу Manual of Equine Anesthesia and Analgesia - Группа авторов - Страница 252

 Spontaneous breathing should have resumed before the tube is removed in recovery.

 Confirm that the horse is taking regular deep breaths.

 Removal of the tube before the horse has regained the swallowing reflex is generally acceptable, but many advocate waiting until this reflex has returned.

 It is also acceptable to leave an orotracheal or nasotracheal tube in place during recovery and this may be indicated under certain circumstances (see Figure 4.9).This is generally indicated if there is a risk of regurgitation of gastric contents as in some colic cases.Figure 4.9 Horses with orotracheal (a) and nasotracheal (b) tube in recovery. Ideally, the tube should not protrude beyond the lips as this could lead to kinking of the tube if it were to impact the wall of the recovery box.In these cases, it is also prudent to tilt the head downwards in recovery to facilitate pharyngeal drainage.However, if left in place, the tube should not protrude much distance from the mouth to avoid it kinking in the event that it gets impacted against a wall of the recovery stall.

 Horses tolerate orotracheal and nasotracheal tubes well during recovery.

 Since the horse does not produce significant salivary secretions, it is not necessary to drain or suction the oropharynx prior to tube removal. The exception is in cases of reflux of gastric contents into the oropharynx.