Jornal Brasileiro de Pneumologia
versão On-line ISSN 1806-3756
TERRA, Ricardo Mingarini et al. Self-expanding stent made of polyester mesh with silicon coating (Polyflex®) in the treatment of inoperable tracheal stenoses. J. bras. pneumol. [online]. 2007, vol.33, n.3, pp. 241-247. ISSN 1806-3756. http://dx.doi.org/10.1590/S1806-37132007000300003.
OBJECTIVE: To evaluate the Polyflex® stent in terms of its efficacy, ease of implantation, and complications in patients with tracheobronchial affections. METHODS: This was a prospective study, in which sixteen patients with inoperable tracheal stenosis secondary to orotracheal intubation (n = 12), neoplasia (n = 3), or Wegener's granulomatosis (n = 1) were monitored. Of these patients, eleven were women, and five were men. The mean age was 42.8 years (range, 21-72 years). Patients were submitted to implantation of a total of 21 Polyflex® stents. All procedures were carried out in the operating room under general anesthesia, and the stents were implanted via suspension laryngoscopy using the stent applicator. RESULTS: Stents were implanted and symptoms were resolved in all cases. The stents remained in place for a mean period of 7.45 months, ranging from 2 to 18 months. The complications observed in the immediate postoperative period were dysphonia (in two patients, 12.5%) and odynophagia (in two patients, 12.5%). Late complications were cough (in ten patients, 62.5%), migration (in seven patients, 43.75%), granuloma formation (in two patients, 12.5%), and pneumonia (in one patient, 6.25%). CONCLUSION: The Polyflex® stent is easily implanted, easily removed, well tolerated by patients and effective in resolving symptoms. However, its use is associated with a high rate of migration, especially in patients with post-orotracheal intubation stenosis.
Palavras-chave : Tracheal stenosis; Intubation, intratracheal; Prostheses and implants; Stents.