Laryngeale hemiplegie bij het paard: een update

Abstract

Laryngeal hemiplegia is a progressive upper airway dysfunction in the horse. It is not only seen in thoroughbred racehorses but also in warmblood horses, draft horses and in ponies. The condition is most frequently seen on the left side. The left laryngeal recurrent nerve gradually loses function and the function of the left cricoarythenoideus dorsalis muscle is compromised. This condition is most often idiopathic. It possibly leads to exercise intolerance but a respiratory noise is often the primary complaint of the owner. Right sided laryngeal hemiplegia is almost always related to other pathologies causing the nerve to malfunction. The diagnosis is not always easy because of the restricted availability of endoscopy in the field. A better understanding of laryngeal ultrasound examination might offer a new possibility in diagnosing laryngeal hemiplegia. If abnormal inspiratory sound is the only problem, laser treatment alone can be satisfactory. If the horse shows clear signs of exercise intolerance, further treatment is needed. If correctly executed, the outcome of laryngoplasty is good. Other techniques, like nerve grafting and pacemakers, are being explored and might even be regarded as better alternative treatments in the future, as these are more physiologic compared to laryngoplasty. In sporthorses presented with idiopathic laryngeal neuropathy without postoperative complications, the prognosis is good.

Permanent tracheostomy in a horse: a case report

“…According to Clercq et al (2018), other techniques, such as nerve grafting and pacemakers, are being explored and may even be considered as better alternative treatments in the future. In sport horses with idiopathic laryngeal neuropathy without postoperative complications, the prognosis is favorable.…”

“…Consequently, horses with this condition suffer from inspiratory stridor and exercise intolerance at higher speeds and workloads. Thus, recurrent laryngeal neuropathy is particularly relevant to sport, work, and race horses, and often leads to surgical intervention, early retirement, or even euthanasia (CLERCQ et al, 2018;GERBER, 2020).…”

Recurrent Laryngeal Neuropathy – Diagnostik und Laryngoplastik am stehenden Pferd

“…Durch die sagittale Position des Pferdes kann die Lage des Aryknorpels besser mittels Videoendoskopie evaluiert werden. Es kommt zu keiner Verfälschung aufgrund der Schwerkraft und veränderter Druckverhältnisse auf den Larynx, die in Seitenlage entstehen 4 , 5 , 15 .…”