Ignite Creation Date:
2025-12-26 @ 12:16 PM
Ignite Modification Date:
2026-06-02 @ 11:03 PM
Study NCT ID:
NCT01006200
Status:
COMPLETED
Last Update Posted:
2009-11-02
First Post:
2009-10-29
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Factors to Obstructive Granulation Tissue Formation After Ultraflex Stenting in Benign Tracheal Narrowing
Sponsor:
Chang Gung Memorial Hospital
Organization:
Study Overview
Official Title:
Factors to Obstructive Granulation Tissue Formation After Ultraflex Stenting in Benign Tracheal Narrowing
Status:
COMPLETED
Status Verified Date:
2009-10
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This study is aimed to determine factors leading to obstructive granulation tissue formation after placement of Self-Expandable Metallic Stent (SEMS) in patients with benign tracheal diseases.
Detailed Description:
From August 2001 to September 2007, patients with benign tracheal stenosis who underwent endoscopic tracheal stent placements at the Chang Gung Memorial Hospital, a university-affiliated hospital in Northern Taiwan, were evaluated.
Definition of airway conditions Dynamic collapse (tracheao-malacia) was defined as tracheal lumen narrowing on expiration under bronchoscopic examination. Structural tracheal stenosis was defined as tracheal stenosis excluding dynamic collapse. Etiologies of structural tracheal stenosis were post-intubation or tracheostomy, post-tuberculosis infection, granulation tissue formation cause previous SEMS re-stenosis, previous SEMS fracture, corrosive injury with stricture, mediastinitis cause airway stricture, and goiter compression.
Obstructive granulation tissue formation after SEMS implantation was defined as granulation tissue obstructing the lumen of the SEMS under bronchoscopic examination, including the proximal and distal ends.
Significant variables, such as structural obstruction airway before SEMS implantation was entered into a forward logistical regression analysis to determine the net effect of each predictor while controlling the net effects of others to obstructive granulation tissue formation. Obstructive granulation tissue formation curves between patients with and those without structural tracheal stenosis before SEMS implantation were compared by log rank test.
Definition of airway conditions Dynamic collapse (tracheao-malacia) was defined as tracheal lumen narrowing on expiration under bronchoscopic examination. Structural tracheal stenosis was defined as tracheal stenosis excluding dynamic collapse. Etiologies of structural tracheal stenosis were post-intubation or tracheostomy, post-tuberculosis infection, granulation tissue formation cause previous SEMS re-stenosis, previous SEMS fracture, corrosive injury with stricture, mediastinitis cause airway stricture, and goiter compression.
Obstructive granulation tissue formation after SEMS implantation was defined as granulation tissue obstructing the lumen of the SEMS under bronchoscopic examination, including the proximal and distal ends.
Significant variables, such as structural obstruction airway before SEMS implantation was entered into a forward logistical regression analysis to determine the net effect of each predictor while controlling the net effects of others to obstructive granulation tissue formation. Obstructive granulation tissue formation curves between patients with and those without structural tracheal stenosis before SEMS implantation were compared by log rank test.
Study Oversight
Has Oversight DMC:
True
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: