• Jieun Kang, You Sook Cho, Dae Kee Choi, Jae Seung Lee, Yeon Mok Oh, Sang Do Lee, and Sei Won Lee.
• Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
• J. Korean Med. Sci. 2019 Apr 22; 34 (15): e120.

AbstractBronchial thermoplasty is a nonpharmacological treatment for severe asthma that delivers thermal energy to the bronchial walls and reduces hypertrophied smooth muscle mass. Previous studies have shown its efficacy and safety, resulting in approval from the Food and Drug Administration in 2010. In Korea, the first bronchial thermoplasty was carried out in 2014; 4 patients have undergone the procedure so far. This case series presents the medical history and treatment outcomes of these 4 patients. All patients presented with uncontrolled asthma despite optimal medical treatment. Bronchial thermoplasty was performed at the right lower lobe, left lower lobe, and both upper lobes in order at 3-week intervals. All procedures were performed under general anesthesia. Two patients had significant decreases in exacerbations and required a lower dose of inhaled corticosteroids after the procedure. One patient had slightly fewer exacerbations but failed to reduce the use of systemic corticosteroids. One patient had no change in symptoms. One limitation of bronchial thermoplasty is the difficulty of predicting clinical responders. However, since more therapeutic options are needed in the management of severe asthma, especially T2-low asthma, discussion with experts about the feasibility and necessity of bronchial thermoplasty will ensure the best possible care.© 2019 The Korean Academy of Medical Sciences.

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