Stručni rad

Exercise induced upper airway dysfunction in horses

Agata Kučko
Nika Brkljača Bottegaro ; Veterinarski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Darko Grden ; Veterinarski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Jelena Gotić ; Veterinarski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska

Sažetak

The upper airway begins with the nose and ends at the larynx. These narrow structures represent two critical airflow points. Impedance is a measure of how the airflow is opposed by the airway. Twofold tissue resistance is a result of any upper airway dynamic obstruction. Maximal oxygen uptake is 40 times the value at rest. The impedance increase caused by higher tissue resistance leads to hypoxia and hypercapnia, which significantly decrease performance. The most common dynamic upper airway obstructions are alar folds collapse, nasopharyngeal collapse, dorsal displacement and instability of the soft palate and laryngeal hemiplegia. Racing Thoroughbreds and Standardbreds under high-speed exercise have higher maximal oxygen uptake. Therefore, they are very sensitive to the minimal occurrence of even the slightest upper airway lesion. Detailed clinical examination should detect the cause of the decreased performance. When planning an upper airway surgical procedure, lesion severity, horse use and age, postoperative complications and possible outcomes should be considered.

Ključne riječi

horse; upper airway; performance; hypoxia; dynamic obstruction

Hrčak ID:

229415

URI

https://hrcak.srce.hr/229415

Datum izdavanja:

10.12.2018.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.761 *