Assessment of Physical Therapies to Improve Secretion Clearance in Patients with Cystic Fibrosis [ 2002 - 2004 ]

Research Grant

Researchers: Prof Peter Bye (Principal investigator) ,  A/Pr Stefan Eberl ,  Dr Michael Robinson ,  Prof Jennifer Alison

Brief description People with cystic fibrosis (CF) produce thick mucus that is not cleared normally from the lungs. This retained mucus often becomes infected, which progressively damages the lungs. Various physical therapies which may help clear secretions are being used in CF. These include several types of devices which provide positive pressure to the airways. However, it is not known to what extent these devices, or other interventions such as manual chest physiotherapy and exercise, enhance mucus clearance. As a result, it is not currently possible to scientifically prescribe intervention(s) to enhance mucus clearance in CF. This is partly because much of the research that has been performed in this area has been poorly-designed or has used inaccurate measures. Also, recent research has shown that these therapies may have significant effects beside their effect on mucus clearance. For instance, bacterial infection and the exchange of oxygen and carbon dioxide between the blood supply and air in the lung may all be affected by these interventions. Notably, the extent of benefit or detriment seen in these parameters does not always correlate with the effect on mucus clearance. We therefore believe a series of experiments is necessary to provide evidence upon which the scientific selection of mucus clearance therapies may be based. We have developed a new technique which allows clearance of mucus from the airways to be objectively measured in three-dimensions (3D). We intend to use the 3D technique to examine the effects of three different positive pressure devices, exercise, and manual chest physiotherapy on mucus clearance. Based on the outcomes of this research, we intend to compare the most appropriate therapy to performing no mucus clearance therapy in a short term trial. This trial will assess changes in the following: bacterial infection, mucus plugging in the airways, how well the lungs move air and exchange oxygen and carbon dioxide, and the patient's quality of life.

Funding Amount $AUD 302,310.00

Funding Scheme NHMRC Project Grants

Notes Standard Project Grant