[Analysis of the safety and efficacy of bronchial thermoplasty for severe asthma with the first second forced expiratory volume (FEV(1)) as a percentage of the predicted value (FEV(1)%pred)<60].

Objective: To investigate the efficacy and safety of bronchial thermoplasty (BT) in severe asthma patients with the first second forced expiratory volume (FEV(1)) as a percentage of the predicted value (FEV(1)%pred) 0.05). After 1 year and 2 years of treatment, all indicators in the two groups were better than before treatment (all P 0.05). In the FEV(1)%pred 0.05), but the FEV(1)%pred at 2 years after treatment was higher than before treatment (P 0.05). Conclusion: BT can significantly improve the lung function, reduce the times of acute attack and the dosage of glucocorticoids in severe asthma patients with FEV(1)% pred<60%, which is safe and effective.