BT activation frequencies and endoscopic changes
airway mucosal congestion, edema
EDEMA
For the intervention group treated with combined BT therapy, the effective radiofrequency activations of right, left lower lobe, bilateral upper lung lobes, and total effective radiofrequency activations were (61.47 ± 12.59), (65.53 ± 13.91), [79.50 (63.75, 92.50)], and (207.03 ± 33.34), respectively. The intervention group after completing the above-mentioned three sessions of BT treatment was compared with pre-treatment. As a result, the airway mucus secretion in the patients decreased after each BT treatment compared with that before, accompanied by alleviated airway mucosal congestion and edema (Fig. Endoscopic changes before and after BT