Airway Clearance Using High Frequency Chest Wall Oscillation

Status Completed

Clinical Trial Summary

High frequency chest wall oscillation (HFCWO) has been shown to increase tracheal mucous clearance compared with control. These observations led to the development of 'The Vest' which is a non-stretchable jacket connected to an air-pulse generator and worn by the patient over the chest wall. The generator rapidly inflates and deflates 'The Vest' which gently compresses and releases the chest wall between 5 and 20 times per second. This generates mini-coughs which are said to dislodge mucus from the bronchial walls and to facilitate its movement up the airways. In addition 'The Vest' has been shown to reduce the viscosity of mucus and this should further enhance mucous clearance. The technique has, for many years, been widely used in the United States of America as an alternative to the European airway clearance regimens of the active cycle of breathing techniques, autogenic drainage, positive expiratory pressure and oscillating positive expiratory pressure, but 'The Vest' has only recently been registered for use in Europe. It is important that the airway clearance regimen of 'The Vest' be compared with the alternative airway clearance regimens widely used in Europe.

Hypothesis: In people with cystic fibrosis 'The Vest' will lead to the expectoration of an increased weight of sputum during treatment sessions compared with alternative airway clearance regimens.

Clinical Trial Description

n/a

Study Design

Allocation: Randomized, Intervention Model: Crossover Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00817947
Study type	Interventional
Source	Royal Brompton & Harefield NHS Foundation Trust
Contact
Status	Completed
Phase	Phase 3
Start date	January 2007
Completion date	September 2007

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