Day46COPD
以持续的气流受限为特征，患者可出现慢性咳嗽、咳痰、呼吸困难、气短、胸闷等症状。包括慢性支气管炎和肺气肿
视频
video:from油管
临床表现
Chronicobstructivepulmonarydisease,orCOPD,isaprogressiveinflammatorylungdiseasecharacterizedbyincreasingbreathingdifficulty。Othersymptomsincludecough,most