Improvement of preoperative abnormal lung function after individualized airway intervention
To further improve abnormal lung function to prevent airway complications, we treated these patients with individualized atomization intervention and tested lung function. Lung function tests showed that the FEV1% pre values of the 45 patients were all increased up to 80% after atomization inhalation before surgery. Among them, the FEV1%pre values of 27 mild patients and 4 moderate patients were increased up to 80% after 2 days of atomization intervention, and FEV1%pre values of the remaining 1 mild patient, 9 moderate patients and 4 moderate-severe patients all reached 80% after 4 days of atomization intervention (Figure 2A, B) . In addition, we also found that the indexes of lung function (e.g., FEV1%pre, FEV1/FVC% pre, MEF50% pre, MEF25% pre, and MMEF% pre) in each patient with mild, moderate or moderate-severe lung function obstruction were improved significantly after different frequencies of atomization inhalation(Figure 2C-F) .