慢性阻塞性肺病（ＣＯＰＤ）患者常伴有营养不良，而影响呼吸肌功能，降低通气量，进一步加重ＣＯＰＤ。我们用同一种操作方法测定了６５例肺功能受损程度不同的ＣＯＰＤ患者血浆氨基酸含量，分析不同肺功能受损程度的ＣＯＰＤ患者血浆氨基酸含量的变化。１　资料与方法１．１ Chronic obstructive pulmonary disease (COPD) patients are often accompanied by malnutrition, which affects respiratory muscle function, reduce ventilation, and further increase COPD. We used the same procedure to determine the plasma levels of amino acids in 65 COPD patients with different degrees of lung impairment and to analyze the changes of plasma amino acid levels in COPD patients with different degrees of lung injury. 1 Materials and Methods 1.1