What Causes Laryngitracheal Stenosis?
Stent failure.
Detailed Answer:
Hello again,
Before going to answers, let me explain some facts about laryngitracheal stenosis.
1. soft stenosis or narrowing like webs can be dilated, post dilation stent with thread need to be worn for 12- 18 months.
In case of recurrence or stent failure, resection of that part( stenosis), end to end anastomoses is the last resort.
2. There are external factors (external compression by thyroid growths), diseases like amyloidosis, perichondritis, intrinsic factors ( chronic feeding tube, gastric reflux, repeated intubations, too much of scarring in healing phase) play a role in patency of trachea with stent.
3. Normally stenosis occurs in the area where less blood supply with more pressure.
It is difficult to tell the cause, it could be patient factors (chronic lung infections requiring the repeated suctions, associated feeding tube or from repeated infriction and infection from vents and thread.
Hope, I have answeed your query.
All the best. Take care.