New tracheal stainless steel stent pilot study: twelve month follow-up in a rabbit model

Lopez-Minguez, Sandra (Universidad de Zaragoza) ; Serrano-Casorran, Carolina (Universidad de Zaragoza) ; Guirola, Jose Andres (Universidad de Zaragoza) ; Rodriguez-Zapater, Sergio (Universidad de Zaragoza) ; Bonastre, Cristina (Universidad de Zaragoza) ; De Gregorio, Miguel A. (Universidad de Zaragoza)

Resumen: Background
Canine tracheal collapse is a complex airway pathology without promising treatment results. Currently nitinol stents are the best surgical option; however, some professionals are doubting if stent placement is the best option due to the associated complications.
Objective
Determine the technical feasibility, safety, and long-term follow-up after the implantation of a new tracheal stent designed for canine tracheal collapse.
Methods
Thirteen healthy, adult female New Zealander rabbits were involved in this pilot study.A new intra-tracheal device (Reference number 902711 patent registered as CasMin-Twine) was implanted in ten animals. Deployment was performed under general anesthesia, making a puncture incision via a 21 Gauge needle in the intra-tracheal space where the stent was introduced with a screwing process. The device was fixed to the tracheal wall with a non-absorbable suture. Computerized Tomography (CT) and an endoscopy to study structural abnormalities were performed after 30, 90 and 365 days after stent placement.
Results
Technical and clinical success was 100%. There was no significant change in behavior or respiratory disorders. CT studies showed no significant alterations. After the 30 days, 60% of the animals showed partial endothelization in the endoscopy study, and only one animal still presented partial endothelization after 12 months. Mucus accumulation was only present in 40% of cases and classified as low, without respiratory consequences. Only one animal presented a single granuloma at caudal stent tip.
Conclusions
This new tracheal stent (CasMin-Twine) is an effective and safe procedure with promising results, and also shows the possibility of removing the device after endothelization has been produced. New studies should be carried out to evaluate the effectiveness in patients with tracheomalacia.
Clinical Significance/Impact
This new product can give veterinarians a new option of treatment for this complicated pathology. Minimizing specific equipment for its deployment, CasMin-Twine will be more accessible for all professionals.

Idioma: Inglés

DOI: 10.7717/peerj.7797

Año: 2019

Publicado en: PeerJ 8, 7 (2019), 7797 [14 pp.]
ISSN: 2167-8359

Factor impacto JCR: 2.379 (2019)

Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 32 / 71 = 0.451 (2019) - Q2 - T2

Factor impacto SCIMAGO: 0.995 - Medicine (miscellaneous) (Q1) - Agricultural and Biological Sciences (miscellaneous) (Q1) - Neuroscience (miscellaneous) (Q2) - Biochemistry, Genetics and Molecular Biology (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/B36-17R

Tipo y forma: Article (Published version)

Área (Departamento): Área Radiol. y Medicina Física (Dpto. Pediatría Radiol.Med.Fís)
Área (Departamento): Área Sanidad Animal (Dpto. Patología Animal)
Área (Departamento): Área Medicina y Cirugía Animal (Dpto. Patología Animal)