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目的：探讨慢性阻塞性肺病（ＣＯＰＤ）患者营养状态与运动通气耗氧的关系。方法：ＣＯＰＤ患者４２例，按占理想体重的百分比（％ＩＢＷ）分为３组：Ａ组１４例（％ＩＢＷ＜９０）、Ｂ组１８例（９０≤％ＩＢＷ＜１１０）和Ｃ组１０例（％ＩＢＷ＞１１０）。作肺功能和运动试验。结果：Ａ组最大运动功率（Ｗｍａｘ）、最大摄氧量（·ＶＯ２ｍａｘ）较Ｂ、Ｃ组降低（Ｐ＜０．０１）；Ａ组运动通气氧耗（·ＶＯ２／Ｗ／·ＶＥ）、功率氧耗量（△·ＶＯ２／△Ｗ）较Ｂ、Ｃ组增加（Ｐ＜０．０１）。而无氧阈（ＡＴ）Ａ组较Ｂ、Ｃ组提早发生。结论：ＣＯＰＤ伴营养不良（ＭＮＣＯＰＤ）患者运动通气耗氧、功率耗氧量增加，ＡＴ提早发生等，使运动耐量降低。异常的气体交换指数可加重营养不良
Objective: To investigate the relationship between nutrition status and oxygen consumption of exercise ventilation in patients with chronic obstructive pulmonary disease (COPD). Methods: Forty-two patients with COPD were divided into three groups according to the percentage of ideal body weight (% IBW): 14 cases in group A (% IBW <90), 18 cases in group B (90≤% IBW <110) and 10 cases in group C (% IBW> 110). For lung function and exercise tests. Results: The maximal exercise power (Wmax) and maximal oxygen uptake (VO2max) in group A were lower than those in group B and C (P <0.01). The oxygen consumption (· VO2 / W / · VE) Oxygen consumption (△ · VO2 / △ W) than B, C group increased (P <0.01). The anaerobic threshold (AT) A group than B, C group occurred earlier. CONCLUSIONS: COPD patients with malnutrition (MNCOPD) exercise ventilation oxygen consumption, power oxygen consumption increased, AT premature occurs, so that exercise tolerance decreased. Abnormal gas exchange index can aggravate malnutrition