Study objective: In inoperable patients with tracheal
stenosis who are treated using silicone stents, stent migration occurs
in 18.6% of cases. To decrease the migration rate, we have designed a
new silicone stent with narrow central and larger distal parts. This
study analyzes the stability and tolerance of this new stent.
Design: Preliminary prospective study conducted in two
French university hospitals.
inoperable patients with benign complex tracheal stenosis due to
intubation or tracheotomy.
stent insertion was performed under general anesthesia with a rigid
bronchoscope. The patients were followed up clinically up to stent
removal, which was planned at 18 months.
Stent insertion or removal was very simple and did not differ from
other silicone stents. No migration occurred after a mean follow-up of
22.8 months. Minimal granuloma formation occurred in only one patient
(7.7%). Sputum retention remained similar to that with other silicone
stents and could be improved by a smoother internal wall. Stents have
been removed in seven patients after a mean duration of 19.6 months,
with a complete stenosis cure in four cases.
Conclusion: This new stent combines the excellent
stability of the metallic stents and the tolerance and easy removal of
straight silicone stents. This allows a prolonged use in order to
obtain curative action.