Bronchial thermoplasty: Long-term safety and effectiveness in patients with severe persistent asthma

Background Bronchial thermoplasty (BT) has previously been shown to improve asthma control out to 2 years in patients with severe persistent asthma. Objective We sought to assess the effectiveness and safety of BT in asthmatic patients 5 years after therapy. Methods BT-treated subjects from the Asthma Intervention Research 2 trial (ClinicalTrials.gov NCT01350414) were evaluated annually for 5 years to assess the long-term safety of BT and the …