SUNNYVALE, CA--(Marketwire - February 11, 2008) - Asthmatx, Inc., a medical device company that has developed a catheter-based procedure under investigation for the treatment of asthma, announced today the publication of data from the Research in Severe Asthma (RISA) Trial of bronchial thermoplasty in the American Journal of Respiratory and Critical Care Medicine (AJRCCM, 2007; 176:1185-1191). The publication reports that despite a transient increase in procedure-related adverse events, patients experienced longer-term improvement in pulmonary function, improved quality of life and asthma control, and a reduction in rescue medication use for patients treated with bronchial thermoplasty.