Laryngeal silicone stent as a treatment option for laryngeal paralysis in dogs: a preliminary study of 6 cases

Abstract

Background Laryngeal paralysis is a common idiopathic degenerative neurological disease in older medium-to-large breed dogs, with surgical correction of the obstruction being the treatment of choice. Objectives This study evaluated the use of laryngeal silicone stents to treat canine laryngeal paralysis in dogs where classic surgical treatment was not accepted by the owners. Methods Dogs diagnosed with laryngeal paralysis, for which the owners refused arytenoid lateralization surgery as a first-line treatment, were treated with laryngeal silicone stents. Results Six dogs with bilateral laryngeal paralysis were included in the study. All dogs showed improvement in clinical signs immediately after the procedure. No clinical signs or radiographic changes were noted in four out of six dogs in the follow-up visit performed 1 wk later. One dog was suspected of aspirating water while drinking, but the signs disappeared after repositioning the stent. Another dog had a relapse of stridor due to caudal migration of the stent. This dog underwent arytenoid lateralization surgery because larger stents are not commercially available. At the time of writing, between seven and 13 mon after stent placement, no significant incidents have occurred in four dogs, and all owners report a satisfactory quality of life. Conclusions Laryngeal silicone stenting is an interesting alternative for treating dogs with acquired laryngeal paralysis when the owners refuse classic arytenoid lateralization surgery. Furthermore, stent placement can be a temporary solution to stabilize these dogs until a permanent surgical treatment can be performed.

Paralisia de laringe unilateral esquerda pós intubação em braquicefálico: Relato de caso

“…Neste caso, pode ser que o paciente se beneficiasse de uma abordagem cirúrgica para correção da PL, devido ao quadro multifatorial de obstrução de vias aéreas superiores. Para correção cirúrgica, inúmeras técnicas já foram descritas dentre elas técnicas de lateralização unilateral da aritenoide, laringectomias parciais, stents laríngeos e até traqueostomia permanente em casos em que a possibilidade de pneumonia aspirativa são maiores como em casos de megaesôfago concomitante (Kitshoff et al, 2013;MacPhail, 2020;Ricart et al, 2020;Théron & Lahuerta-Smith, 2022). A lateralização é normalmente indicada em pacientes com acometimento bilateral, sendo a correção de ambos os lados normalmente contraindicada devido ao aumento das chances de morbidades (Kerwin et al, 2012;MacPhail, 2020).…”

Stents in Veterinary Medicine

“…In new generations of stents, these materials are coated with various types of layers that perform additional functions. These include stents that release immunomodulatory drugs (paclitaxel, biolimus, sirolimus, arsenic trioxidate, or zotarolimus) or antibiotics (cefotaxime, triclosan), which are particularly useful in highly invasive procedures that often induce inflammation [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. The most commonly used seems to be the self-expandable nitinol stent (nickel-titanium alloy with a ratio of 55:45%) with different types of plexus, as shown in Figure 2 [ 20 ].…”

Laringoscopia direta como método diagnóstico da paralisia de laringe em cão: relato de caso

“…Em animais com angústia respiratória o tratamento emergencial é indicado e consiste em estabilizar o paciente e melhorar a ventilação reduzindo o edema laríngeo e minimizando o estresse (Junqueira, et al, 2018;Macphail, 2020). O tratamento cirúrgico é o mais indicado e consiste na estabilização e reposicionamento das cartilagens laríngeas sendo a lateralização unilateral da cartilagem a técnica cirúrgica mais utilizada (Théron & Smith, 2022).…”