Both groups were checked their pulmonary function. Results: There were no significant difference in VC, FVC, TLC, FEV 1 and FEV 1% in both groups.

• 结果 :两组肺活量( VC)、用力肺活量 ( FVC)、肺总量 ( TLC)、第一秒用力呼气量 ( FEV1) ,第一秒呼气率 ( FEV1%25 )差异无显著性意义。