Background: Dumon stent placement requires use of a
technically difficult rigid bronchoscope. A recently developed
technique for placing a Dumon stent introduced via a conventional
endotracheal tube is detailed herein.
conventional endotracheal tube is inserted beyond the stenosis site;
this procedure is observed with the use of a flexible bronchoscope with
the patient undergoing general anesthesia. The Dumon stent is folded
and inserted into the endotracheal tube and is introduced into the
stenosis site with the use of a cylindrical-tipped stainless steel wire
as a pusher. The endotracheal tube is withdrawn while the pusher is
positioned to expand the stent at the stenosis site. Dumon stents of 12
to 16 mm in diameter were put in place using the present method in 5
cases of tracheobronchial stenosis.
Results: The mean
time from endotracheal tube insertion to stent placement was 181
s. The present method positioned the Dumon stent more easily and safely
than the original rigid bronchoscope because the endotracheal tube used
was flexible. One patient, however, required a tracheostomy and
surgical forceps to remove the stent 3 months after placement.
Conclusion: While Dumon stent removal may require a rigid
bronchoscope or tracheostomy, stents can be introduced without
difficulty via a conventional endotracheal tube.