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Treatment of complex airway stenoses using patient-specific 3D-engineered stents: a proof-of-concept study
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Treatment of complex airway stenoses using patient-specific 3D-engineered stents: a proof-of-concept study
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Journal Article
Treatment of complex airway stenoses using patient-specific 3D-engineered stents: a proof-of-concept study
2019
Overview
Anatomically complex airway stenosis (ACAS) represents a challenging situation in which commercially available stents often result in migration or granulation tissue reaction due to poor congruence. This proof-of-concept clinical trial investigated the feasibility and safety of computer-assisted designed (CAD) and manufactured personalised three-dimensional (3D) stents in patients with ACAS from various origins. After CAD of a virtual stent from a CT scan, a mould is manufactured using a 3D computer numerical control machine, from which a medical-grade silicone stent is made. Complication rate, dyspnoea, quality of life and respiratory function were followed after implantation. The congruence of the stent was assessed peroperatively and at 1 week postimplantation (CT scan). The stent could be implanted in all 10 patients. The 3-month complication rate was 40%, including one benign mucus plugging, one stent removal due to intense cough and two stent migrations. 9 of 10 stents showed great congruence within the airways, and 8 of 10 induced significant improvement in dyspnoea, quality of life and respiratory function. These promising outcomes in highly complex situations support further investigation on the subject, including technological improvements.Trial registration number NCT02889029.
Publisher
BMJ Publishing Group Ltd and British Thoracic Society,BMJ Publishing Group LTD,BMJ Publishing Group
Subject
/ Airway Obstruction - etiology
/ Airway Obstruction - therapy
/ CAD
/ Chronic obstructive pulmonary disease
/ Constriction, Pathologic - etiology
/ Constriction, Pathologic - therapy
/ Dyspnea
/ Humans
/ Lung Transplantation - adverse effects
/ Patients
/ Quality of Life Stents / adverse effects
/ Stents
