Heliox has a lower density than that of air and therefore aids in the distribution of aerosolized particles such as salbutamol into the distal airways in asthmatics due in part to laminar flow.
But heliox has also been found to be beneficial in patients with COPD.
In the November issue of the Journal of Applied Physiology, a group of researchers found that exercise tolerance improves significantly in patients suffering from COPD.
You can read more about their findings here.
Despite its increasing cost, the following study found a benefit in its use both in improved spirometry values, and in improved airflow.
Under the leadership of the Asthma Committee of the Canadian Thoracic Society, a group of respirologists, pediatricians, immunoallergists and emergency and family physicians met at Niagara-on-the-Lake, Ont., from 28 to 31 May 1998, to review Canadian recommendations for the best management of asthma.