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目的：探讨慢性阻塞性肺疾病（ＣＯＰＤ）患者极量运动后气体交换参数的恢复。方法：ＣＯＰＤ患者４０例与正常男性２２例作极量运动试验。连续测定运动及其恢复期气体交换参数，并计算气体交换参数恢复半衰期和恢复程度。结果：极量运动后，ＣＯＰＤ患者气体交换参数恢复半衰期较正常对照组明显延长。在运动停止１０ｍｉｎ时，ＣＯＰＤ患者体内潴留ＣＯ２排出量为０．５１±０．７０ｍｌ／（ｋｇ·ｍｉｎ）；但呼吸各参数恢复程度均在９５％以上，与正常人相比无差异。结论：ＣＯＰＤ患者极量运动后气体交换参数恢复半衰期较正常人明显延长，这可能与气道阻塞有关
Objective: To investigate the recovery of gas exchange parameters after excercise exercise in patients with chronic obstructive pulmonary disease (COPD). Methods: 40 patients with COPD and normal male 22 cases for extreme exercise test. The gas exchange parameters of the exercise and its recovery were continuously measured, and the half-life and degree of recovery of the gas exchange parameters were calculated. Results: After excercising, the half-life of gas exchange parameter recovery in patients with COPD was significantly longer than that of the normal control group. The amount of CO2 excreted in COPD patients was 0.51 ± 0.70ml / (kg · min) after 10min of exercise stop, but the recovery of respiration parameters were above 95%, which was no difference compared with normal subjects. Conclusion: The half-life of gas exchange parameter recovery after exergy exercise in patients with COPD is significantly longer than that in normal subjects, which may be related to airway obstruction