Transendoscopic contact neodymium:yttrium aluminum garnet laser treatment of tympany of the auditory tube diverticulum in two foals.

This study investigates an innovative medical procedure in which an Nd:YAG laser is used endoscopically to treat tympany (abnormal air accumulation) in the auditory tube diverticulum of two foals. The treatment reduces the risk of unintentional cranial nerve damage compared to other methods and can be executed while the horse is sedated or anesthetized.

Objective of the Research

• The objective of this research was to explore an advanced method to treat tympany of the auditory tube diverticulum in foals. This method involved using an Nd:YAG laser endoscopically and comparing its implications and effectiveness to traditional procedures.

Methodology

• The researchers conducted this treatment on two Standardbred foals. They performed fenestration (creation of an artificial opening) on the median septum using an endoscopically placed Nd:YAG laser.
• One foal, which showed recurrence of the symptoms, was treated again. This time the researchers enhanced the fenestration using a modified Whitehouse approach and targeted the pharyngeal opening of the auditory tube.

Key Findings

• The usage of an Nd:YAG laser significantly minimized the risk of cranial nerve damage that might occur during incisions into the auditory tube diverticulum.
• The procedure can be carried out while the horse is either sedated or anesthetized, offering a safe and flexible approach in equine healthcare.
• However, according to the study, clinical signs can recur if the fenestration heals closed, or if the tympany affects both sides (bilateral), rather than just one side (unilateral).

Implications of the Research

• This research offers an innovative approach for managing tympany of the auditory tube diverticulum in foals, with a minimized risk of cranial nerve damage.
• Although the procedure presents certain risks, such as potential recurrence, it opens up possibilities for further research and development of new veterinary techniques for treating such conditions.